BXK RW 17-35 NPA - Final Specs.pdf
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FINAL PROJECT
SPECIFICATIONS
Buckeye Municipal Airport
Runway ’17-35’
Non-Precision Approaches
Marking & Lighting Modifications
Dibble Project No.: 1023034.04
Prepared For: City of Buckeye
April 25, 2025
WWW.DIBBLECORP.COM
FINAL PROJECT SPECIFICATIONS
Buckeye Municipal Airport
Runway ’17-35’ Non-Precision Approaches
Marking & Lighting Modifications
Dibble Project No.: 1023034.04
Prepared For:
City of Buckeye
Buckeye Municipal Airport
3000 S Palo Verde Rd
Buckeye, AZ 85326
April 25, 2025
Duane H. Dana, PE
Senior Project Manager
Dibble
Buckeye Municipal Airport
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Dibble Project No. 1023034.04
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General Technical Provisions
GENERAL TECHNICAL PROVISIONS
TABLE OF CONTENTS
Section Description
Page
10
General Specifications ..................................................................................................
GTP-1
20
Airfield Safety and Security ..........................................................................................
GTP-5
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Item 10 General Specifications
10.01 Utilities and Existing Facilities
This item shall govern the field location of all underground existing utilities in areas to be improved, to
avoid conflicts with proposed surface or underground improvement. Work under this section shall include,
but not be limited to, the location of all underground facilities. Underground facilities means any item that
is buried or placed below ground for use in connection with the storage or conveyance of water, sewage,
electronic, telephone or telegraphic communications, electric energy, oil, gas or other substances, and shall
include, but not be limited to pipes, sewers, conduits, cables, valves, lines, wires, manholes, attachments
and those portions of poles and their attachments below ground, including electrical and communication
ducts, airfield lighting and control cables, fiber optic lines, storm drains, electrical and telephone lines. The
Contractor shall employ a private utility location service to locate the existing Owner and non-Owner
utilities prior to starting the work. The Contractor shall pothole and use prudent care when excavating and
locating said utilities at their own expense.
The Contractor shall comply with the State requirements regarding excavation and underground utilities
per A.R.S., Chapter 2, Article 6.3. and other pertinent Sections of the Arizona Blue Stake Law. The
Contractor shall be responsible for locating all Owner and non-Owner utilities.
The Contractor’s attention is directed to the following Arizona Revised Statutes:
a. ARS 40-360.22. Excavations, determining location of underground facilities; providing
information. This statute requires that no person shall begin excavation before the location and marking
are complete or the excavator is notified that marking is unnecessary and requires that upon notification,
the Owner of the facility shall respond as promptly as practical, but in no event later than two (2) working
days. This section is not applicable to an excavation made during an emergency that involves danger to life,
health or property if reasonable precautions are taken to protect underground facilities.
b. ARS 40-360.23. Making excavations in careful, prudent manner; liability for negligence. This
statute states that obtaining information as required does not excuse any person making any excavation
from doing so in a careful and prudent manner no shall it excuse such persons from liability for any damage
or injury resulting from his negligence.
c. ARS 40-360.28. Civil penalty; liability. If the Owner or operator fails to locate, or incorrectly
locates the underground facility, pursuant to this article, the Owner or operator becomes liable for resulting
damages, costs and expenses to the injured party.
10.01.01 Existing Utilities
The Contractor is hereby advised that the location of all utilities, as shown on the Plans, may not be complete
nor exact and the Contractor shall verify the exact location of the utilities. The Contractor shall be
responsible for any damage done to public or private property and shall be repaired at the Contractor's
expense.
Location of any underground telephone lines may be field verified by calling the Blue Stake Center
telephone number 263-1100 or 1-800-STAKE-IT (Outside Maricopa County). The Contractor is required
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General Technical Provisions
by Blue Stake Center to call at least two (2) working days before digging. The Contractor shall locate all
utilities that Blue Stake will not locate.
The following utilities companies may serve the Airport directly or can provide services as requested.
Utility Companies for Existing Utilities and Flood Plain Information
Utility
Description
Water
City of Buckeye
Septic
City of Buckeye
Electrical
Arizona Public Service (APS)
Telephone
CenturyLink
CATV
Cox Communications
Gas
Southwest Gas
Drainage
Maricopa Flood Control District, City of Buckeye
The Contractor is to protect all existing facilities during construction The Contractor shall notify the
appropriate Utility Company or agency of any construction that may affect their facilities.
Measurement for “Location of Underground Utilities” shall be by the actual cost of the work. Cost for work
for subcontractors (i.e., Utility Designation/Potholing contractor) will be based upon invoiced cost from the
subcontractor. Cost shall be calculated in accordance with the MAG Uniform Specifications, Section 109.
Underground Utility Location costs will be subject to daily monitoring and approval by the City of Buckeye.
Payment for location of underground utilities, measured as prescribed above, shall be paid based on
approved actual costs. Such payment shall be full compensation for furnishing all labor, equipment tools
and materials and for all designation, preparation, excavation, backfilling and placing of materials; and for
all incidentals necessary. Payment for the cost of each utility location will not be made until satisfactory
survey data has been submitted to the City of Buckeye.
Payment shall be made under:
Item GTP-10.01.1
Location of Underground Utilities – per Lump Sum
10.01.02 Water for Construction Purposes
It is the Contractor's responsibility to identify the water source, its compatibility, storage, and costs for all
water requirements for the Project. The Contractor must submit a water source and its intended use to the
City of Buckeye for approval, and this shall be provided by the Contractor at their expense.
On-site Water system is owned and operated by the City of Buckeye Water Resources Department. The
Water Resources Department should be contacted for the placement of Hydrant Meters at the Contractor’s
expense for construction water use during the project.
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10.01.03 Electrical Power
All power for lighting, operation of Contractor's plant or equipment, or for any other use as may be required
in the execution of the work to be performed under the provision of these Contract Documents shall be
provided by the Contractor at their expense. The Contractor shall remove all temporarily installed electrical
facilities, after completion of the work, if ordered to do so by the City of Buckeye.
10.01.04 Sanitary Facilities
Contractor shall furnish temporary sanitary facilities at the site, as provided herein, at their own expense,
for the needs of all construction workers and other performing work or furnishing services on the Project.
Sanitary facilities shall be of reasonable capacity, properly maintained throughout the construction period,
and obscured from public view to the greatest practical extent. If toilets of the chemically treated type are
used, at least one toilet will be furnished for each 20 persons. Contractor shall enforce the use of such
sanitary facilities by all personnel at the site.
END SECTION 10
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General Technical Provisions
Item 20 Airfield Safety and Security
20.01 Description and Scope
This item shall consist of furnishing and implementing an Airfield Traffic Control and Barricade Plan for
the Project. The Contractor is required to provide a plan that will ensure a safe and controlled traffic
environment (construction and aircraft alike) during construction in accordance with the Phasing Plans
provided in the contract drawings. The Contractor shall be responsible for submitting a project specific
Phasing and Barricading Plans in which the limits of construction operations are outlined in a manner
consistent with his Construction Schedule, for the approval of the City/Airport.
The Barricade and Traffic Control Plans must be submitted by the Contractor at the Pre-Construction
Conference.
The Contractor shall submit a Cleanup Plan for approval by the Owner to be followed at the close of each
Phase of construction identified on the plans. At a minimum, the Plan shall include an itemized, detailed
list of tasks and equipment to be used to properly clear all Runway and Taxiway areas. The Plan shall
specifically identify all work to be performed for each Phase. The Plan shall also include the requirement of
the Contractor and City of Buckeye to perform a site walk of the entire effected area of construction a
minimum of 2-hours before that area is scheduled to be re-opened to aircraft traffic to assure that it has be
cleaned and cleared of all equipment and Foreign Object Debris (FOD).
The Contractor shall be responsible for providing, the installation of, and the maintenance of barricades,
lights, and traffic control devices necessary for the control of aircraft, vehicular, and pedestrian traffic, (24-
hours a day). Any requests to modify the approved barricading and phasing plans must be submitted to the
City of Buckeye for review and approval.
20.02 Barricade Requirements
All construction areas shall be delineated with low-profile barricades that meet FAA standards to prevent
intrusion by taxiing aircraft, vehicles, or pedestrians, (FAA AC 150/5370-2G – Operational Safety on
Airports During Construction). Low-profile barricades shall be orange in color with white reflective tape
on both sides of the barricade and shall be a minimum of six (6) feet in length and a maximum of ten (10)
inches in height, (not including required flagging or lights).
All barricades must be equipped with RED omni-directional lights, either flashing or steady burning, to
provide additional visual warning whether during normal daytime and night-time operations or during
periods of reduced visibility due to weather conditions. Lights may be either battery-powered or solar
powered, however, the intensity of the lights must be sufficient to adequately and without ambiguity
delineate the construction areas. The Contractor is responsible to maintain all barricade lights in working
condition to the approval of the City of Buckeye 24 hours a day. The barricades shall be installed so that
they are always in the extended position and properly oriented. Maximum spacing between barricades shall
adhere to the approved plans, or as directed by the City of Buckeye.
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20.03 Signage Requirements
The Contractor shall use temporary directional or way-finding signage for all access and haul routes, open
trenching or other hazards. The temporary signage shall be clear, concise, reflective, and large enough so
as to minimize safety-related issues. All temporary signage shall be placed and maintained in a manner to
withstand the particular elements it could experience, (i.e. monsoon winds, jet blast, etc.). All temporary
signing shall meet the requirements of the most current version of the MUTCD, and shall be frangible.
The Contractor shall include bid pricing for Item GTP-20.04.1 below for manufacturing, providing and
maintaining up to three (3) 24-inch by 36-inch (34”x36”) reflectorized signs on frangible posts and bases
(color and text/language to be determined at the project pre-construction meeting) at generally the
locations shown in the Plans. These are in addition to other wayfinding signage the Contractor, Engineer
and/or City deem necessary to maintain a safe environment for the project.
20.04 Method of Measurement and Payment
Measurement and payment for Airfield Safety and Security shall be made at the contract lump sum price,
and shall be considered full compensation for furnishing all labor, materials, barricades, lights, flags,
crossing guards, escorts, directional or way-finding signage, power vacuum sweepers; furnishing, placing,
repositioning, and removal of temporary airside traffic control devices; all vehicle and equipment markings,
security badges and training for all construction personnel (if required by COB), tools, equipment, flagmen,
cell phones, radios, and incidentals required to safely control traffic as identified in the Phasing Plans to
provide the proper security for the Airport. Partial payments of the lump sum item(s) will be made
uniformly over the contract time, provided that the airside safety and security is maintained and satisfactory
to the City of Buckeye and the RPR.
Payment will be made under:
Item GTP-20.04.1 Airfield Safety and Security – per Lump Sum
END SECTION 20
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Table of Contents
CIVIL TECHNICAL SPECIFICATIONS
TABLE OF CONTENTS
ITEM DESCRIPTION
PAGE
C-105 Mobilization .......................................................................................... C-105-1
P-605 Joint Sealants for Pavements... ................................................................ P-605-1
P-608 Emulsified Asphalt Seal Coat................................................................... P-608-1
P-620 Runway and Taxiway Marking ................................................................. P-620-1
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C-105-1
Mobilization
Item C-105 Mobilization
105-1 Description. This item of work shall consist of, but is not limited to, work and operations
necessary for the movement of personnel, equipment, material and supplies to and from the project site for
work on the project except as provided in the contract as separate pay items.
105-2 Mobilization limit. Mobilization shall be limited to 7 percent of the total project cost.
105-3 Posted notices. Prior to commencement of construction activities, the Contractor must post the
following documents in a prominent and accessible place where they may be easily viewed by all employees
of the prime Contractor and by all employees of subcontractors engaged by the prime Contractor: Equal
Employment Opportunity (EEO) Poster “Equal Employment Opportunity is the Law” in accordance with
the Office of Federal Contract Compliance Programs Executive Order 11246, as amended;. These notices
must remain posted until final acceptance of the work by the Owner.
105-4 Engineer/RPR field office. An Engineer/RPR field office is not required.
METHOD OF MEASUREMENT
105-5 Basis of measurement and payment. Based upon the contract lump sum price for
“Mobilization” partial payments will be allowed as follows:
a. With first pay request, 25%.
b. When 25% or more of the original contract is earned, an additional 25%.
c. When 50% or more of the original contract is earned, an additional 40%.
d. After Final Inspection, Staging area clean-up and delivery of all Project Closeout materials, the
final 10%.
BASIS OF PAYMENT
105-6 Payment will be made under:
Item C-105-6.1
Mobilization - per Lump Sum
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Mobilization
REFERENCES
The publications listed below form a part of this specification to the extent referenced. The publications are
referred to within the text by the basic designation only.
Office of Federal Contract Compliance Programs (OFCCP)
Executive Order 11246, as amended
EEOC-P/E-1
Equal Employment Opportunity is the Law Poster
END OF ITEM C-105
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P-605-1
Joint Sealants for Pavements
Item P-605 Joint Sealants for Pavements
DESCRIPTION
605-1.1 This item shall consist of providing and installing a resilient and adhesive joint sealing material
capable of effectively sealing joints in pavement; joints between different types of pavements; and cracks in
existing pavement.
MATERIALS
605-2.1 Joint sealants. Joint sealant materials shall meet the requirements of ASTM D6690. Each
lot or batch of sealant shall be delivered to the jobsite in the manufacturer’s original sealed container. Each
container shall be marked with the manufacturer’s name, batch or lot number, the safe heating
temperature, and shall be accompanied by the manufacturer’s certification stating that the sealant meets
the requirements of this specification.
605-2.2 Backer rod. The material furnished shall be a compressible, non-shrinking, non-staining,
non-absorbing material that is non-reactive with the joint sealant in accordance with ASTM D5249. The
backer-rod material shall be 25% ± 5 % larger in diameter than the nominal width of the joint.
605-2.3 Bond breaking tapes. Provide a bond breaking tape or separating material that is a flexible,
non-shrinkable, non-absorbing, non-staining, and non-reacting adhesive-backed tape. The material shall
have a melting point at least 5°F greater than the pouring temperature of the sealant being used when tested
in accordance with ASTM D789. The bond breaker tape shall be approximately 1/8 inch (3 mm) wider than
the nominal width of the joint and shall not bond to the joint sealant.
CONSTRUCTION METHODS
605-3.1 Time of application. Joints shall be sealed as soon after completion of the curing period as
feasible and before the pavement is opened to traffic, including construction equipment. The pavement
temperature shall be 50°F and rising at the time of application of the poured joint sealing material. Do not
apply sealant if moisture is observed in the joint.
605-3.2 Equipment. Machines, tools, and equipment used in the performance of the work required by
this section shall be approved before the work is started and maintained in satisfactory condition at all
times. Submit a list of proposed equipment to be used in performance of construction work including
descriptive data, 14 days prior to use on the project.
a. Tractor-mounted routing tool. Provide a routing tool, used for removing old sealant from
the joints, of such shape and dimensions and so mounted on the tractor that it will not damage the sides of
the joints. The tool shall be designed so that it can be adjusted to remove the old material to varying depths
as required. The use of V-shaped tools or rotary impact routing devices will not be permitted. Hand-
operated spindle routing devices may be used to clean and enlarge random cracks.
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Joint Sealants for Pavements
b. Concrete saw. Provide a self-propelled power saw, with water-cooled diamond or abrasive saw
blades, for cutting joints to the depths and widths specified.
c. Sandblasting equipment. Sandblasting is not allowed.
d. Waterblasting equipment. The Contractor must demonstrate waterblasting equipment
including the pumps, hose, guide and nozzle size, under job conditions, before approval in accordance with
paragraph 605-3.3. The Contractor shall demonstrate, in the presence of the RPR, that the method cleans
the joint and does not damage the joint.
e. Hand tools. Hand tools may be used, when approved, for removing defective sealant from a crack
and repairing or cleaning the crack faces. Hand tools should be carefully evaluated for potential spalling
effects prior to approval for use.
f. Hot-poured sealing equipment. The unit applicators used for heating and installing ASTM
D6690 joint sealant materials shall be mobile and shall be equipped with a double-boiler, agitator-type
kettle with an oil medium in the outer space for heat transfer; a direct-connected pressure-type extruding
device with a nozzle shaped for inserting in the joint to be filled; positive temperature devices for controlling
the temperature of the transfer oil and sealant; and a recording type thermometer for indicating the
temperature of the sealant. The applicator unit shall be designed so that the sealant will circulate through
the delivery hose and return to the inner kettle when not in use.
605-3.3 Preparation of joints. Pavement joints for application of material in this specification must
be dry, clean of all scale, dirt, dust, curing compound, and other foreign matter. The Contractor shall
demonstrate, in the presence of the RPR, that the method cleans the joint and does not damage the joint.
a. Sawing. All joints shall be sawed in accordance with specifications and plan details. Immediately
after sawing the joint, the resulting slurry shall be completely removed from joint and adjacent area by
flushing with a jet of water, and by use of other tools as necessary.
b. Sealing. Immediately before sealing, the joints shall be thoroughly cleaned of all remaining
laitance, curing compound, filler, protrusions of hardened concrete, old sealant and other foreign material
from the sides and upper edges of the joint space to be sealed. Cleaning shall be accomplished by
concrete saw and waterblaster as specified in paragraph 605-3.2. The newly exposed concrete joint faces
and the pavement surface extending a minimum of 1/2 inch from the joint edge shall be sandblasted clean.
Sandblasting shall be accomplished in a minimum of two passes. One pass per joint face with the nozzle
held at an angle directly toward the joint face and not more than 3 inches from it. After final cleaning and
immediately prior to sealing, blow out the joints with compressed air and leave them completely free of
debris and water. The joint faces shall be surface dry when the seal is applied.
c. Backer Rod. When the joint opening is of a greater depth than indicated for the sealant depth,
plug or seal off the lower portion of the joint opening using a backer rod in accordance with paragraph 605-
2.2 to prevent the entrance of the sealant below the specified depth. Take care to ensure that the backer rod
is placed at the specified depth and is not stretched or twisted during installation.
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Joint Sealants for Pavements
d. Bond-breaking tape. Where inserts or filler materials contain bitumen, or the depth of the joint
opening does not allow for the use of a backup material, insert a bond-separating tape breaker in accordance
with paragraph 605-2.3 to prevent incompatibility with the filler materials and three-sided adhesion of the
sealant. Securely bond the tape to the bottom of the joint opening so it will not float up into the new sealant.
605-3.4 Installation of sealants. Joints shall be inspected for proper width, depth, alignment, and
preparation, and shall be approved by the RPR before sealing is allowed. Sealants shall be installed in
accordance with the following requirements:
Immediately preceding, but not more than 50 feet ahead of the joint sealing operations, perform a final
cleaning with compressed air. Fill the joints from the bottom up to 1/8 inch ±1/16 inch below the top of
pavement surface; or bottom of groove for grooved pavement. Remove and discard excess or spilled sealant
from the pavement by approved methods. Install the sealant in such a manner as to prevent the formation
of voids and entrapped air. In no case shall gravity methods or pouring pots be used to install the sealant
material. Traffic shall not be permitted over newly sealed pavement until authorized by the RPR. When a
primer is recommended by the manufacturer, apply it evenly to the joint faces in accordance with the
manufacturer’s instructions. Check the joints frequently to ensure that the newly installed sealant is cured
to a tack-free condition within the time specified.
605-3.5 Inspection. The Contractor shall inspect the joint sealant for proper rate of cure and set,
bonding to the joint walls, cohesive separation within the sealant, reversion to liquid, entrapped air and
voids. Sealants exhibiting any of these deficiencies at any time prior to the final acceptance of the project
shall be removed from the joint, wasted, and replaced as specified at no additional cost to the airport.
605-3.6 Clean-up. Upon completion of the project, remove all unused materials from the site and leave
the pavement in a clean condition.
METHOD OF MEASUREMENT
605-4.1 The quantity of asphalt surface treatment shall be considered incidental to Item P-620-5.1 and
no separate measurement shall be made.
BASIS OF PAYMENT
605-5.1 There will be no separate measurement or payment for asphalt surface treatment, payment will
be incidental to Item P-620-5.1 and no separate payment shall be made.
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Joint Sealants for Pavements
REFERENCES
The publications listed below form a part of this specification to the extent referenced. The publications are
referred to within the text by the basic designation only.
ASTM International (ASTM)
ASTM D789
Standard Test Method for Determination of Relative Viscosity of Polyamide (PA)
ASTM D5249
Standard Specification for Backer Material for Use with Cold- and Hot-Applied
Joint Sealants in Portland-Cement Concrete and Asphalt Joints
ASTM D6690
Standard Specification for Joint and Crack Sealants, Hot Applied, for Concrete and
Asphalt
Advisory Circulars (AC)
AC 150/5340-30
Design and Installation Details for Airport Visual Aids
END ITEM P-605
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P-608-1
Emulsified Asphalt Seal Coat
Item P-608 Emulsified Asphalt Seal Coat
DESCRIPTION
608-1.1 This item shall consist of the application of a emulsified asphalt surface treatment composed of
an emulsion of natural and refined asphalt materials, water and a polymer additive, for taxiways and
runways with the application of a suitable aggregate to maintain adequate surface friction. The terms seal
coat, asphalt sealer, and asphalt material are interchangeable throughout this specification. The term
emulsified asphalt means an emulsion of natural and refined asphalt materials.
MATERIALS
608-2.1 Aggregate. The aggregate material shall be a dry, clean, dust and dirt free, sound, durable,
angular shaped manufactured specialty sand, such as that used as an abrasive, with a Mohs hardness of 6
to 8. The Contractor shall submit the specialty sand manufacturer’s technical data and a manufacturer’s
Certificate of Analysis (COA) indicating that the specialty sand meets the requirements of the specification
to the RPR prior to start of construction. The sand must be approved for use by the RPR and shall meet the
following gradation limits when tested in accordance with ASTM C136 and ASTM C117:
Aggregate Material Gradation Requirements1
Sieve Designation
(square openings)
Individual Percentage
Retained by Weight
No. 10
0
No. 14
0-4
No. 16
0-8
No. 20
0-35
No. 30
20-50
No. 40
10-45
No. 50
0-20
No. 70
0-5
No. 100
0-2
No. 200
0-2
1
Locally available sand or abrasive material that is slightly outside of the gradation requirements
may be approved by the RPR with concurrence by the seal coat manufacturer for the use of locally
available sand or abrasive material. The RPR and manufacturer’s field representative should verify
acceptance during application of Control strips indicated under paragraph 608-3.2.
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P-608-2
Emulsified Asphalt Seal Coat
The Contractor shall provide a certification showing particle size analysis and properties of the material
delivered for use on the project. The Contractor’s certification may be subject to verification by testing the
material delivered for use on the project.
608-2.2 Asphalt Emulsion. The asphalt emulsion shall meet the properties in the following table:
Concentrated Asphalt Emulsion Properties
Properties
Specification
Limits
Viscosity, Saybolt Furol at 77°F
ASTM D7496
20 – 100 seconds
Residue by Distillation or Evaporation
ASTM D6997 or ASTM D6934
57% minimum
Sieve Test
ASTM D6933
0.1% maximum
24-hour Stability
ASTM D6930
1% maximum
5-day Settlement Test
ASTM D6930
5.0% maximum
Particle Charge1
ASTM D7402
Positive
6.5 maximum pH
1
pH may be used in lieu of the particle charge test which is sometimes inconclusive in slow setting,
asphalt emulsions.
The asphalt material base residue shall contain not less than 20% gilsonite, or uintaite and shall not contain
any tall oil pitch or coal tar material and shall contain no less than one percent (1%) polymer.
Tests on Residue from Distillation or Evaporation
Properties
Specification
Limits
Viscosity at 275°F
ASTM D4402
1750 cts maximum
Solubility in 1,1,1 trichloroethylene
ASTM D2042
97.5% minimum
Penetration
ASTM D5
50 dmm maximum
Asphaltenes
ASTM D2007
15% minimum
Saturates
ASTM D2007
15% maximum
Polar Compounds
ASTM D2007
25% minimum
Aromatics
ASTM D2007
15% minimum
The asphalt emulsion, when diluted in the volumetric proportion of two parts concentrated asphalt material
to one part hot water shall have the following properties:
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Emulsified Asphalt Seal Coat
Two-to-One Dilution Emulsion Properties
Properties
Specification
Limits
In Ready-to-Apply Form, two parts concentrate to one part water, by volume
Viscosity, Saybolt Furol at 77°F
ASTM D7496
5 – 50 seconds
Residue by Distillation or Evaporation
ASTM D6997 or ASTM D6934
38% minimum
Pumping Stability1
Pass
1
Pumping stability is tested by pumping one pint of seal coat diluted one (1) part concentrate to one
(1) part water, at 77°F, through a 1/4-inch gear pump operating 1750 rpm for 10 minutes with no
significant separation or coagulation.
The Contractor shall provide a copy of the manufacturer’s Certificate of Analysis (COA) for the emulsified
asphalt delivered to the project. If the asphalt emulsion is diluted at other than the manufacturer’s facility,
the Contractor shall provide a supplemental COA from an independent laboratory verifying the asphalt
emulsion properties.
The COA shall be provided to and approved by the RPR before the emulsified asphalt is applied. The
furnishing of the vendor’s certified test report for the asphalt material shall not be interpreted as a basis for
final acceptance. The manufacturer’s COA may be subject to verification by testing the material delivered
for use on the project.
The asphalt material storage and handling temperature shall be between 50°F - 160°F and the material
shall be protected from freezing, or whenever outside temperature drops below 40°F for prolonged time
periods.
Contractor shall provide a list of airport pavement projects, exposed to similar climate conditions, where
this product has been successfully applied within at least 5 years of the project.
608-2.3 Water. Water used in mixing or curing shall be from potable water sources. Other sources shall
be tested in accordance with ASTM C1602 prior to use. Water used in making and diluting the emulsion
shall be potable, with a maximum hardness of 90ppm calcium and 15ppm magnesium; deleterious iron,
sulfates, and phosphates maximum 7ppm, and less than 1ppm of organic byproducts. Water shall be a
minimum of 140°F prior to adding to emulsion.
608-2.4 Polymer. The polymer shall meet the properties in the following table:
Polymer Properties
Properties
Limits
Solids Content
47% to 65%,
Percent by Weight
Weight
8.0 to 9.0 pounds/gallon
pH
3.0 to 8.0
Buckeye Municipal Airport
Runway ’17-35’ Non-Precision Approaches
Dibble Project No. 1023034.04
Dibble
April 2025
P-608-4
Emulsified Asphalt Seal Coat
Properties
Limits
Particle Charge
Nonionic/Cationic
Mechanical Stability
Excellent
Film Forming Temperature, °C
+5°C, minimum
Tg, °C
22°C, maximum
The manufacturer shall provide a copy of the Certificate of Analysis (COA) for the polymer used in the seal
coat; and the Contractor shall include the COA with the emulsified asphalt COA when submitting to the
RPR.
608-2.5 Seal Coat with Aggregate. The Contractor shall submit friction test data from no less than
one of the airport projects identified under 608-2.2. The test data must be from the same project and
include technical details on application rates, aggregate rates, and point of contact at the airport to confirm
use and success of sealer with aggregate.
Friction test data in accordance with AC 150/5320-12, at 40 or 60 mph wet, must include as a minimum;
the friction value prior to sealant application; two values, between 24 and 96 hours after application, with
a minimum of 24 hours between tests; and one value between 180 days and 360 days after the application.
The results of the tests between 24 and 96 hours shall indicate friction is increasing at a rate to obtain
similar friction value of the pavement surface prior to application, and the long-term test shall indicate no
apparent adverse effect with time relative to friction values and existing pavement surface.
Seal coat material submittal without required friction performance will not be approved. Friction tests
performed on this project cannot be used as a substitute of this requirement.
COMPOSITION AND APPLICATION RATE
608-3.1 Application Rate. The approximate amounts of materials per square yard for the asphalt
surface treatment shall be as provided in the table for the treatment area(s) at the specified dilution rate(s)
as noted on the plans. The actual application rates will vary within the range specified to suit field conditions
and will be recommended by the manufacturer’s representative and approved by the RPR from the test
area/sections evaluation.
Application Rate
Dilution
Rate
Quantity of Emulsion
gal/yd2
Quantity of Aggregate
lb/yd2
2:1
0.08-0.17
0.20-0.50
608-3.2 Control areas and control strips. Not Used.
Buckeye Municipal Airport
Runway ’17-35’ Non-Precision Approaches
Dibble Project No. 1023034.04
Dibble
April 2025
P-608-5
Emulsified Asphalt Seal Coat
CONSTRUCTION METHODS
608-4.1 Worker safety. The Contractor shall obtain a Safety Data Sheet (SDS) for both the asphalt
emulsion product and sand and require workmen to follow the manufacturer’s recommended safety
precautions.
608-4.2 Weather limitations. The asphalt emulsion shall be applied only when the existing
pavement surface is dry and when the weather is not foggy, rainy, or when the wind velocity will prevent
the uniform application of the material. No material shall be applied in strong winds that interfere with the
uniform application of the material(s), or when dust or sand is blowing or when rain is anticipated within
eight (8) hours of application completion. The atmospheric temperature and the pavement surface
temperature shall both be at, or above 60°F and rising. Seal coat shall not be applied when pavement
temperatures are expected to exceed 130ºF within the subsequent 72 hours if traffic will be opened on
pavement within those 72 hours. During application, account for wind drift. Cover existing buildings,
structures, runway edge lights, taxiway edge lights, informational signs, retro-reflective marking and in-
pavement duct markers as necessary to protect against overspray before applying the emulsion. Should
emulsion get on any light or marker fixture, promptly clean the fixture. If cleaning is not satisfactory to the
RPR, the Contractor shall replace any light, sign or marker with equivalent equipment at no cost to the
Owner.
608-4.3 Equipment and tools. The Contractor shall furnish all equipment, tools, and machinery necessary
for the performance of the work.
a. Pressure distributor. The emulsion shall be applied with a manufacturer-approved computer
rate-controlled asphalt distributor. The equipment shall be in good working order and contain no
contaminants or diluents in the tank. Spray bar tips must be clean, free of burrs, and of a size to maintain
an even distribution of the emulsion. Any type of tip or pressure source is suitable that will maintain
predetermined flow rates and constant pressure during the application process with application speeds
under eight (8) mph or 700 feet per minute. The equipment will be tested under pressure for leaks and to
ensure proper set-up before use. The Contractor will provide verification of truck set-up (via a test-shot
area), including but not limited to, nozzle tip size appropriate for application per nozzle manufacturer,
spray-bar height and pressure and pump speed appropriate for the viscosity and temperature of sealer
material, evidence of triple-overlap spray pattern, lack of leaks, and any other factors relevant to ensure the
truck is in good working order before use.
The distributor truck shall be equipped with a 12-foot, minimum, spray bar with individual nozzle
control. The distributor truck shall be capable of specific application rates in the range of 0.05 to 0.25
gallons per square yard. These rates shall be computer-controlled rather than mechanical. The distributor
truck shall have an easily accessible thermometer that constantly monitors the temperature of the emulsion,
and have an operable mechanical tank gauge that can be used to cross-check the computer accuracy.
The distributor truck shall effectively heat and mix the material to the required temperature prior to
application in accordance with the manufacturer’s recommendations.
The distributor shall be equipped with a hand sprayer to spray the emulsion in areas not accessible to
the distributor truck.
Buckeye Municipal Airport
Runway ’17-35’ Non-Precision Approaches
Dibble Project No. 1023034.04
Dibble
April 2025
P-608-6
Emulsified Asphalt Seal Coat
b. Aggregate spreader. The asphalt distributor truck will be equipped with an aggregate
spreader mounted to the distributor truck that can apply sand to the emulsion in a single pass operation
without driving through wet emulsion. The aggregate spreader shall be equipped with a variable control
system capable of uniformly distributing the sand at the specified rate at varying application widths and
speeds. The aggregate spreader must be adjusted to produce an even and accurate application of specified
aggregate. Prior to any seal coat application, the aggregate spreader will be calibrated onsite to ensure
acceptable uniformity of spread. The RPR will observe the calibration and verify the results. The aggregate
spreader will be re-calibrated each time the aggregate rate is changed either during the application of test
strips or production. The Contractor may consult the seal coat manufacturer representative for procedure
and guidance. The sander shall have a minimum hopper capacity of 3,000 pounds of sand. Push-type hand
sanders will be allowed for use around lights, signs and other obstructions, if necessary.
c. Power broom/blower. A power broom and/or blower shall be provided for removing loose
material from the surface to be treated.
d. Equipment calibration. Asphalt distributors must be calibrated within the same construction
season in accordance with ASTM D2995. The Contractor must furnish a current calibration certification for
the asphalt distributor truck from any State or other agency as approved by the RPR.
608-4.4 Preparation of asphalt pavement surfaces. Clean pavement surface immediately
prior to placing the seal coat so that it is free of dust, dirt, grease, vegetation, oil or any type of objectionable
surface film. Remove oil or grease from the asphalt pavement by scrubbing with a detergent, washing
thoroughly with clean water, and then treat these areas with a spot primer. Any additional surface
preparation, such as crack repair, shall be in accordance with Item P-101, paragraph 101-3.6.
608-4.5 Emulsion mixing. The application emulsion shall be obtained by blending asphalt material
concentrate, water and polymer, if specified. Always add heated water to the asphalt material concentrate,
never add asphalt material concentrate to heated water. Mix one part heated water to two parts asphalt
material concentrate, by volume.
Add 1% polymer, by volume, to the emulsion mix. If the polymer is added to the emulsion mix at the plant,
submit weight scale tickets to the RPR. As an option, the polymer may be added to the emulsion mix at the
job site provided the polymer is added slowly while the asphalt distributor truck circulating pump is
running. The mix must be agitated for a minimum of 15 minutes or until the polymer is mixed to the
satisfaction of the RPR.
608-4.6 Application of asphalt emulsion. The asphalt emulsion shall be applied using a pressure
distributor upon the properly prepared, clean and dry surface at the application rate recommended by the
manufacturer’s representative and approved by the RPR from the test area/sections evaluation for each
designated treatment area. The asphalt emulsion should be applied at a temperature between 130°F and
160°F or in accordance with the manufacturer’s recommendation.
If low spots and depressions greater than 1/2 inch in depth in the pavement surface cause ponding or
puddling of the applied materials, the pavement surface shall be lightly broomed with a broom or brush
type squeegee until the pavement surface is free of any pools of excess material.
During all applications, the surfaces of adjacent structures shall be protected to prevent their being
spattered or marred.
Buckeye Municipal Airport
Runway ’17-35’ Non-Precision Approaches
Dibble Project No. 1023034.04
Dibble
April 2025
P-608-7
Emulsified Asphalt Seal Coat
608-4.7 Application of aggregate material. Immediately following the application of the asphalt
emulsion, friction sand at the rate recommended by the manufacturer’s representative and approved by the
RPR from the test area/sections evaluation for each designated application area, shall be spread uniformly
over the asphalt emulsion in a single-pass operation simultaneous with the sealer application. The
aggregate shall be spread to the same width of application as the asphalt material and shall not be applied
in such thickness as to cause blanketing.
Sprinkling of additional aggregate material, and spraying additional asphalt material over areas that show
up having insufficient cover or bitumen, shall be done by hand whenever necessary. In areas where hand
work is necessitated, the sand shall be applied before the sealant begins to break.
Minimize aggregate from being broadcast and accumulating on the untreated pavement adjacent to an
application pass. Prior to the next application pass, the Contractor shall clean areas of excess or loose
aggregate and remove from project site.
QUALITY CONTROL (QC)
608-5.1 Manufacturer’s representation. The manufacturer’s representative knowledgeable of the
material, procedures, and equipment described in the specification is responsible to assist the Contractor
and RPR in determining the appropriate application rates of the emulsion and aggregate, as well as
recommendations for proper preparation and start-up of seal coat application. Documentation of the
manufacturer representative’s experience and knowledge for applying the seal coat product shall be
furnished to the RPR a minimum of 10 work days prior to placement of seal coat. The cost of the
manufacturer’s representative shall be included in the Contractor’s bid price.
608-5.2 Contractor qualifications. The Contractor shall provide documentation to the RPR that
the seal coat Contractor is qualified to apply the seal coat, including personnel, and equipment, and has
made at least three (3) applications similar to this project in the past two (2) years.
MATERIAL ACCEPTANCE
608-6.1 Application rate. The rate of application of the asphalt emulsion shall be verified at least
twice per day.
608-6.2 Friction tests. Not Used.
METHOD OF MEASUREMENT
608-7.1 Asphalt surface treatment. The quantity of asphalt surface treatment shall be considered
incidental to Item P-620-5.1 and no separate measurement shall be made.
BASIS OF PAYMENT
608-8.1 There will be no separate measurement or payment for asphalt surface treatment, payment will
be incidental to Item P-620-5.1 and no separate payment shall be made.
Buckeye Municipal Airport
Runway ’17-35’ Non-Precision Approaches
Dibble Project No. 1023034.04
Dibble
April 2025
P-608-8
Emulsified Asphalt Seal Coat
REFERENCES
The publications listed below form a part of this specification to the extent referenced. The publications are
referred to within the text by the basic designation only.
ASTM International (ASTM)
ASTM C117
Standard Test Method for Materials Finer than 75-μm (No. 200) Sieve in Mineral
Aggregates by Washing
ASTM C136
Standard Test Method for Sieve Analysis of Fine and Coarse Aggregates
ASTM C1602
Standard Specification for Mixing Water Used in the Production of Hydraulic
Cement Concrete
ASTM D5
Standard Test Method for Penetration of Asphalt Materials
ASTM D244
Standard Test Methods and Practices for Emulsified Asphalts
ASTM D2007
Standard Test Method for Characteristic Groups in Rubber Extender and
Processing Oils and Other Petroleum-Derived Oils by the Clay-Gel Absorption
Chromatographic Method
ASTM D2042
Standard Test Method for Solubility of Asphalt Materials in Trichloroethylene
ASTM D2995
Standard Practice for Estimating Application Rate of Bituminous Distributors
ASTM D4402
Standard Test Method for Viscosity Determination of Asphalt at Elevated
Temperatures Using a Rotational Viscometer
ASTM D5340
Standard Test Method for Airport Pavement Condition Index Surveys
Advisory Circulars (AC)
AC 150/5320-12
Measurement, Construction, and Maintenance of Skid-Resistant Airport
Pavement Surfaces
AC 150/5320-17
Airfield Pavement Surface Evaluation and Rating (PASER) Manuals
AC 150/5380-6
Guidelines and Procedures for Maintenance of Airport Pavements
END OF ITEM P-608
Buckeye Municipal Airport
Runway ’17-35’ Non-Precision Approaches
Dibble Project No. 1023034.04
Dibble
April 2025
P-620-1
Runway and Taxiway Marking
Item P-620 Runway and Taxiway Marking
DESCRIPTION
620-1.1 This item shall consist of the preparation and painting of numbers, markings, and stripes on the
surface of runways, taxiways, and aprons, in accordance with these specifications and at the locations shown
on the plans, or as directed by the Resident Project Representative (RPR). The terms “paint” and “marking
material” as well as “painting” and “application of markings” are interchangeable throughout this
specification.
MATERIALS
620-2.1 Materials acceptance. The Contractor shall furnish manufacturer’s certified test reports,
for materials shipped to the project. The certified test reports shall include a statement that the materials
meet the specification requirements. This certification along with a copy of the paint manufacturer’s surface
preparation; marking materials, including adhesion, flow promoting and/or floatation additive; and
application requirements must be submitted and approved by the Resident Project Representative (RPR)
prior to the initial application of markings. The reports can be used for material acceptance or the RPR may
perform verification testing. The reports shall not be interpreted as a basis for payment. The Contractor
shall notify the RPR upon arrival of a shipment of materials to the site. All material shall arrive in sealed
containers that are easily quantifiable for inspection by the RPR.
620-2.2 Marking materials.
Table 1. Marking Materials
Paint1
Glass Beads2
Type
Color
Fed Std. 595
Number
Application
Rate Maximum
Type
Application
Rate Minimum
III
White
37925
55 ft2/gal
IV
5 lb/gal
III
White
(Temporary)
37925
110 ft2/gal
No beads
N/A
III
Black
37038
55 ft2/gal
No beads
N/A
1
See paragraph 620-2.2a
2
See paragraph 620-2.2b
Buckeye Municipal Airport
Runway ’17-35’ Non-Precision Approaches
Dibble Project No. 1023034.04
Dibble
April 2025
P-620-2
Runway and Taxiway Marking
a. Paint. Paint shall be waterborne in accordance with the requirements of this paragraph. Paint
colors shall comply with Federal Standard No. 595. Paint shall meet the requirements of Federal
Specification TT-P-1952F, Type III. The non-volatile portion of the vehicle for all paint types shall be
composed of a 100% acrylic polymer as determined by infrared spectral analysis. The acrylic resin used for
Type III shall be 100% cross linking acrylic as evidenced by infrared peaks at wavelengths 1568, 1624, and
1672 cm-l with intensities equal to those produced by an acrylic resin known to be 100% cross linking.
b. Reflective media. Glass beads for white and yellow paint shall meet the requirements for
Federal Specification TT-B-1325D Type IV, Gradation A. Glass beads for red and pink paint shall meet the
requirements for Type IV, Gradation A.
Glass beads shall be treated with all compatible coupling agents recommended by the manufacturers of the
paint and reflective media to ensure adhesion and embedment.
Glass beads shall not be used in black and green paint.
Type III glass beads shall not be used in red and pink paint.
CONSTRUCTION METHODS
620-3.1 Weather limitations. Painting shall only be performed when the surface is dry, and the
ambient temperature and the pavement surface temperature meet the manufacturer’s recommendations in
accordance with paragraph 620-2.1. Painting operations shall be discontinued when the ambient or surface
temperatures does not meet the manufacturer’s recommendations. Markings shall not be applied when the
wind speed exceeds 10 mph unless windscreens are used to shroud the material guns. Markings shall not
be applied when weather conditions are forecasts to not be within the manufacturers’ recommendations for
application and dry time.
620-3.2 Equipment. Equipment shall include the apparatus necessary to properly clean the existing
surface, a mechanical marking machine, a bead dispensing machine, and such auxiliary hand-painting
equipment as may be necessary to satisfactorily complete the job.
The mechanical marker shall be an atomizing spray-type or airless type marking machine with automatic
glass bead dispensers suitable for application of traffic paint. It shall produce an even and uniform film
thickness and appearance of both paint and glass beads at the required coverage and shall apply markings
of uniform cross-sections and clear-cut edges without running or spattering and without over spray. The
marking equipment for both paint and beads shall be calibrated daily.
620-3.3 Preparation of surfaces. Immediately before application of the paint, the surface shall be
dry and free from dirt, grease, oil, laitance, or other contaminates that would reduce the bond between the
paint and the pavement. Use of any chemicals or impact abrasives during surface preparation shall be
approved in advance by the RPR. After the cleaning operations, sweeping, blowing, or rinsing with
pressurized water shall be performed to ensure the surface is clean and free of grit or other debris left from
the cleaning process.
Buckeye Municipal Airport
Runway ’17-35’ Non-Precision Approaches
Dibble Project No. 1023034.04
Dibble
April 2025
P-620-3
Runway and Taxiway Marking
a. Preparation of new pavement surfaces. The area to be painted shall be cleaned by
broom, blower, water blasting, or by other methods approved by the RPR to remove all contaminants,
including PCC curing compounds, minimizing damage to the pavement surface.
b. Preparation of pavement to remove existing markings. Existing pavement markings
shall be removed by rotary grinding, water blasting, or by other methods approved by the RPR minimizing
damage to the pavement surface. The removal area may need to be larger than the area of the markings to
eliminate ghost markings. After removal of markings on asphalt pavements, apply a fog seal or seal coat to
‘block out’ the removal area to eliminate ‘ghost’ markings.
c. Preparation of pavement markings prior to remarking. Prior to remarking existing
markings, loose existing markings must be removed minimizing damage to the pavement surface, with a
method approved by the RPR. After removal, the surface shall be cleaned of all residue or debris.
Prior to the application of markings, the Contractor shall certify in writing that the surface is dry and
free from dirt, grease, oil, laitance, or other foreign material that would prevent the bond of the paint to the
pavement or existing markings. This certification along with a copy of the paint manufactures application
and surface preparation requirements must be submitted to the RPR prior to the initial application of
markings.
620-3.4 Layout of markings. The proposed markings shall be laid out in advance of the paint
application. The locations of markings to receive glass beads shall be shown on the plans.
620-3.5 Application. A period of 1 day shall elapse between placement of seal coat and application of
the temporary paint markings. A period of 24 days shall elapse between placement of seal coat and
application of the permanent paint markings. Paint shall be applied at the locations and to the dimensions
and spacing shown on the plans. Paint shall not be applied until the layout and condition of the surface has
been approved by the RPR. Permanent paint markings should be applied in the opposite direction of the
temporary paint markings.
The edges of the markings shall not vary from a straight line more than 1/2 inch in 50 feet, and marking
dimensions and spacing shall be within the following tolerances:
Marking Dimensions and Spacing Tolerance
Dimension and Spacing
Tolerance
36 inch or less
±1/2 inch
greater than 36 inch to 6 feet
±1 inch
greater than 6 feet to 60 feet
±2 inch
greater than 60 feet
±3 inch
The paint shall be mixed in accordance with the manufacturer’s instructions and applied to the pavement
with a marking machine at the rate shown in Table 1. The addition of thinner will not be permitted.
Buckeye Municipal Airport
Runway ’17-35’ Non-Precision Approaches
Dibble Project No. 1023034.04
Dibble
April 2025
P-620-4
Runway and Taxiway Marking
Glass beads shall be distributed upon the marked areas at the locations shown on the plans to receive glass
beads immediately after application of the paint. A dispenser shall be furnished that is properly designed
for attachment to the marking machine and suitable for dispensing glass beads. Glass beads shall be applied
at the rate shown in Table 1. Glass beads shall not be applied to black paint or green paint. Glass beads shall
adhere to the cured paint or all marking operations shall cease until corrections are made. Different bead
types shall not be mixed. Regular monitoring of glass bead embedment and distribution should be
performed.
620-3.6 Application--preformed thermoplastic airport pavement markings. Preformed
thermoplastic pavement markings not used.
620-3.7 Control strip. Prior to the full application of airfield markings, the Contractor shall prepare a
control strip in the presence of the RPR. The Contractor shall demonstrate the surface preparation method
and all striping equipment to be used on the project. The marking equipment must achieve the prescribed
application rate of paint and population of glass beads (per Table 1) that are properly embedded and evenly
distributed across the full width of the marking. Prior to acceptance of the control strip, markings must be
evaluated during darkness to ensure a uniform appearance.
620-3.8 Retro-reflectance. Not used.
620-3.9 Protection and cleanup. After application of the markings, all markings shall be protected
from damage until dry. All surfaces shall be protected from excess moisture and/or rain and from
disfiguration by spatter, splashes, spillage, or drippings. The Contractor shall remove from the work area
all debris, waste, loose reflective media, and by-products generated by the surface preparation and
application operations to the satisfaction of the RPR. The Contractor shall dispose of these wastes in strict
compliance with all applicable state, local, and federal environmental statutes and regulations.
METHOD OF MEASUREMENT
620-4.1 The quantity of surface preparation shall be measured by the number of square feet for each type
of surface preparation specified in paragraph 620-3.3. Seal Coat per Item P-608 shall be incidental to this
item.
620-4.2 The quantity of markings shall be paid for shall be measured by the number of square feet of
painting. Reflective media and black paint shall be incidental to this item.
620-4.3 Reflective media shall not be measured. This shall be considered incidental to the placement of
permanent pavement markings.
620-4.4 Black paint required for outlining surface markings with black borders shall not be measured.
This shall be considered incidental to the placement of permanent pavement markings.
Buckeye Municipal Airport
Runway ’17-35’ Non-Precision Approaches
Dibble Project No. 1023034.04
Dibble
April 2025
P-620-5
Runway and Taxiway Marking
620-4.5 Temporary markings placed prior to re-opening a pavement section for aircraft operations within
the 24-day window between application of the seal coat and placement of permanent markings shall be
measured by the number of square feet of painting performed in accordance with the specifications and
accepted by the RPR. Temporary marking includes surface preparation, application and complete removal
of the temporary marking.
BASIS OF PAYMENT
620-5.1 This price shall be full compensation for furnishing all materials and for all labor, equipment,
tools, and incidentals necessary to complete the item complete in place and accepted by the RPR in
accordance with these specifications.
620-5.2 Payment for surface preparation shall be made at the contract price for the number of square feet
for each type of surface preparation specified in paragraph 620-3.3. Seal Coat per Item P-608 shall be
incidental to this item.
620-5.3 Payment for permanent markings shall be made at the contract price by the number of square
feet of painting. Reflective media and black paint shall be incidental to this item.
620-5.4 Payment for temporary markings shall be made at the contract price for the number of square
feet of painting. Surface preparation shall be incidental to this item.
Payment will be made under:
Item P-620-5.1
Obliterate & Seal Pavement Markings – per Square Foot
Item P-620-5.2
Temporary Pavement Marking (White) – per Square Foot
Item P-620-5.3
Permanent Pavement Marking (White) – per Square Foot
REFERENCES
The publications listed below form a part of this specification to the extent referenced. The publications are
referred to within the text by the basic designation only.
ASTM International (ASTM)
ASTM D476
Standard Classification for Dry Pigmentary Titanium Dioxide Products
ASTM D968
Standard Test Methods for Abrasion Resistance of Organic Coatings by Falling
Abrasive
ASTM D1652
Standard Test Method for Epoxy Content of Epoxy Resins
ASTM D2074
Standard Test Method for Total, Primary, Secondary, and Tertiary Amine Values
of Fatty Amines by Alternative Indicator Method
ASTM D2240
Standard Test Method for Rubber Property - Durometer Hardness
Buckeye Municipal Airport
Runway ’17-35’ Non-Precision Approaches
Dibble Project No. 1023034.04
Dibble
April 2025
P-620-6
Runway and Taxiway Marking
ASTM D7585
Standard Practice for Evaluating Retroreflective Pavement Markings Using
Portable Hand-Operated Instruments
ASTM E303
Standard Test Method for Measuring Surface Frictional Properties Using the
British Pendulum Tester
ASTM E1710
Standard Test Method for Measurement of Retroreflective Pavement Marking
Materials with CEN-Prescribed Geometry Using a Portable Retroreflectometer
ASTM E2302
Standard Test Method for Measurement of the Luminance Coefficient Under
Diffuse Illumination of Pavement Marking Materials Using a Portable
Reflectometer
ASTM G154
Standard Practice for Operating Fluorescent Ultraviolet (UV) Lamp Apparatus
for Exposure of Nonmetallic Materials
Code of Federal Regulations (CFR)
40 CFR Part 60, Appendix A-7, Method 24
Determination of volatile matter content, water content, density, volume solids,
and weight solids of surface coatings
29 CFR Part 1910.1200
Hazard Communication
Federal Specifications (FED SPEC)
FED SPEC TT-B-1325D
Beads (Glass Spheres) Retro-Reflective
FED SPEC TT-P-1952F
Paint, Traffic and Airfield Marking, Waterborne
FED STD 595
Colors used in Government Procurement
Commercial Item Description
A-A-2886B
Paint, Traffic, Solvent Based
Advisory Circulars (AC)
AC 150/5340-1
Standards for Airport Markings
AC 150/5320-12
Measurement, Construction, and Maintenance of Skid Resistant Airport
Pavement Surfaces
END OF ITEM P-620
Buckeye Municipal Airport
Runway ‘17-35’ Non-Precision Approaches
Dibble Project No. 1023034.04
CR Engineers
April 2025
Page TOC-1
Table of Contents
ELECTRICAL TECHNICAL SPECIFICATIONS
TABLE OF CONTENTS
ITEM DESCRIPTION
Page
L-100 Electrical General Requirements
L-100 -1
L-108 Underground Power Cable for Airports
L-108 -1
L-110
Airport Underground Electrical Duct Banks and Conduits
L-110 -1
L-125
Installation of Airport Lighting Systems
L-125 -1
4/25/2025
Buckeye Municipal Airport
Runway ‘17-35’ Non-Precision Approaches
Dibble Project No. 1023034.04
CR Engineers
April 2025
Page TOC-2
Table of Contents
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Buckeye Municipal Airport
Runway ’17-35’ Non-Precision Approaches
Dibble Project No. 1023034.04
CR Engineers
April 2025
L-100-1
Electrical General Requirements
ITEM L-100 ELECTRICAL GENERAL REQUIREMENTS
DESCRIPTION
100-1.1 GENERAL. This Item includes furnishing and installing all material, equipment and
apparatus, and all labor, tools, services, and equipment required for the removal of portions of the airfield
lighting system as shown on the drawings and as follows:
a. The removal of portions of the existing airfield lighting systems including conduit segments, cable,
and fixture globes.
b. The temporary removal of existing runway threshold lights for access to existing cable.
Installation shall be in accordance with Specifications FAA-C-1217 and FAA-C-1391, or as noted on the
plans. Perform all work not included in the FAA Specifications in accordance with the National Electrical
Code, applicable local and Airport standards, and regulations.
100-1.2 DEMOLITION AND SALVAGE
a. Removal and salvage of airfield electrical elements is included under this Item shall include the
intent, but not limited to the specific elements, of the following:
(1) Remove existing clear runway edge light globes for return to Airport.
b. Any fixtures damaged that are to remain in-place or identified as remove and salvage to Airport on
the plans, shall be replaced at Contractor’s expense.
c.
Demolition (removal and non-return to Owner or for re-installation) of other airfield electrical
system elements shall include the intent, but not limited to the specific elements, of the following:
(1) Power Cables; direct buried or in conduit.
(2) Conduits and fittings.
d. Demolition (removal and non-return) of other elements associated with the airfield electrical
system may also be included under other Items of this project. Elements covered within this
specification shall include the intent, but not be limited to the specific elements, of the following:
(1) Underground conduits and duct banks, both concrete encased and direct earth buried.
(2) Grading and backfill associated with removal of the foregoing elements shall be covered
under P-152, “Excavation and Embankment”.
100-1.3
NEW CONSTRUCTION GRADING AND BACKFILL.
a. Not Required Grading and backfill associated with the removal of existing items or construction
of the new ducts and conduits shall be installed in accordance with P-152, “Excavation and
Embankment” P-153, “Controlled Low-Strength Material (CLSM)” and P-610 “Concrete”, there will
be no separate measurement or payment for any backfill, compaction, restoration or materials for
slurry or concrete encased conduits and duct banks but shall be considered incidental to the
associated item being installed.
100-1.4 RELATED DOCUMENTS. The General Provisions of the Contract, including General and
Special Conditions, apply to work specified in this item.
Buckeye Municipal Airport
Runway ’17-35’ Non-Precision Approaches
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CR Engineers
April 2025
L-100-2
Electrical General Requirements
a. Conflicts between Drawing and Specifications (Contract Documents) and between Contract
Documents and references within the Contract Documents: Drawings and specifications are
complementary. Work called for by one is binding as if called for by both. Prospective Contractors
shall, as part of their proposals, enumerate, identify, and list conflicts they find to exist within the
Contract Documents, and between these Documents and the rules, regulations, standards, and
codes of the authority having jurisdiction (Airport Authority, City, County) local Utility companies
and local County or State governing bodies. No Allowance shall subsequently be made to the
Contractor by reason of his/her failure to have brought said discrepancies to the attention of the
Consultant during the bidding period or by reason of any error on the Contractor’s part.
b. Execution of Contract is evidence that Contractor has examined all existing conditions, drawings
and specifications related to work, and is informed to extent and character of work. Claims made
during construction for labor and materials required due to difficulties encountered as a result of
Contractor’s inattention to this issue, which could have been clarified prior to bid had examination
been made, will be denied.
100-1.5 TEMPORARY LIGHTING AND CIRCUITS.
a. Contractor shall coordinate with Airport Maintenance or Operations before the end of each work
shift to verify that all airfield lighting circuits are operational. Contractor shall provide all labor
and material for this work, non-pay item (NPI).
b. Contractor shall provide and maintain on site, sufficient equipment required to provide temporary
lighting and circuit extensions.
c.
Work associated with runway shall be performed during coordinated taxiway closures in segments,
reconnected to remaining existing circuit segments and tested for operation prior to the end of each
shift before re-opening taxiway if required to prevent the need for excessive temporary cabling.
100-1.6 SPECIFICATIONS AND STANDARDS. As a supplement to the installation
requirements of this item, the following standard specifications, and regulations of the issues in effect on
the date of this solicitation are incorporated herein by reference and are made a part hereof for electrical
work and installation and splicing of underground cables.
NEC National Electrical Code
FAA-STD-019e
Lightning Protection, Grounding, Bonding and Shielding Requirements for Facilities
FAA-C-1391c
Installation and Splicing of Underground Cables
Local Governing Bodies' Public Works Department, City of Buckeye
Codes and Regulations Maricopa Association of Governments (MAG)
American Association of State Highway and Transportation Officials (AASHTO)
(1) AASHTO LTS-5 (2009: Errata 2009: Amendment 2010) Standard Specifications for
Structural Supports for Highway Signs, Luminaries and Traffic Signals.
ASTM International (ASTM)
(1) ASTM A123/A123M (2009) Standard Specification for Zinc (Hot-Dip Galvanized)
Coatings on Iron and Steel Products
Buckeye Municipal Airport
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Electrical General Requirements
(2) ASTM A153/A153M (2009) Standard Specification for Zinc Coating (Hot-Dip) on Iron
and Steel Hardware
(3) ASTM A575 (1996; R 2007) Standard Specification for Steel Bars, Carbon, Merchant
Quality, M-Grades
(4) ASTM A576 (1900b; R 2006) Standard Specification for Steel Bars, Carbon, Hot-
Wrought, Special Quality
Illuminating Engineering Society of North America (IESNA)
(1) IESNA HB-9 (2000: Errata 2004: Errata 2005: Errata 2006) IES Lighting Handbook.
Institute of Electrical and Electronics Engineers (IEEE)
(1) IEEE 81 (1983) Guide for Measuring Earth Resistivity, Ground Impedance, and Earth
Surface Potentials of a Ground System.
(2) IEEE C135.1 (1999) Standard for Zinc-Coated Steel Bolts and Nuts for Overhead Line
Construction.
(3) IEEE C2 (2007; Errata 06-1; TIA 07-1: TIA 07-3, Errata 07-2; TIA 08-4; TIA 08-6; TIA
08-7; TIA 08-8; TIA 08-9; TIA 08-10; TIA 08-11; TIA 09-12; TIA 09-13; TIA 09-14;
Errata 09-3; TIA 09-15; TIA 09-16; TIA 10-17) National Electrical Safety Code
(4) IEEE Stds Dictionary (2009) IEEE Standards Dictionary: Glossary of Terms &
Definitions
National Electrical Manufacturers Association (NEMA)
(1) ANSI C136.3 (2005; R 2009) American National Standard for Roadway and Area
Lighting Equipment Luminaire Attachments
National Fire Protection Association (NFPA)
(1) NFPA 70 (2011; TIA 11-1; Errata 2011) National Electrical Code
ASHRAE/IESNA 90.1, 2004
American Welding Society (AWS)
Factory Mutual Institute Association (FM)
Lightning Protection Institute
International Electrical Testing Association
Underwriters Laboratories (UL)
(1) UL 467(2007) Grounding and Bonding Equipment
When required by law or regulations, the government agency having jurisdiction for inspections shall be
given reasonable notice and opportunity to inspect the work. Any work that is enclosed or covered up before
such inspection and test shall be uncovered at the Contractor’s expense: after it has been inspected, the
Contractor shall restore the work to its original condition at his own expense.
100-1.7 SHOP DRAWINGS AND MATERIAL LISTS. Prior to the installation of any material
and equipment and within 30 days of contract award, the Contractor shall submit to the Owner for approval
electronic PDF copies of manufacturers' brochures containing complete dimensional and performance
characteristics, wiring diagrams, installation, and operation instructions, etc., for the equipment listed in
Buckeye Municipal Airport
Runway ’17-35’ Non-Precision Approaches
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CR Engineers
April 2025
L-100-4
Electrical General Requirements
the individual L-Series specification Items. Each submittal shall be titled and include the corresponding
specification section(s).
A materials list shall be submitted listing each specification paragraph number and stating whether the
materials proposed are as specified or are substitutions. If the item is a substitute item, a complete
submittal as described in the above paragraph shall be provided for that item.
Submittal data shall be presented in a clear, precise, and thorough manner. Original catalog sheets are
preferred. Photocopies are acceptable provide they are as a good quality as the original. Clearly and boldly
mark each copy to identify pertinent products or models applicable to this project. Indicate all optional
equipment and delete non-pertinent data. Submittals for components of electrical equipment and systems
shall identify the equipment for which they apply on each submittal sheet. Markings shall be boldly and
clearly made with arrows or circles (highlighting is not acceptable). Contractor is solely responsible for
delays in project accruing directly or indirectly from late submissions or resubmissions of submittals.
The data submitted shall be sufficient, in the opinion of the Engineer, to determine compliance with the
plans and specifications. The Contractor’s submittals shall be labeled and titled by specification section.
The Engineer reserves the right to reject any and all equipment, materials, or procedures, which, in the
Engineer’s opinion, does not meet the system design and the standards and codes, specified herein.
EQUIPMENT AND MATERIALS
100-2.1 EQUIPMENT. Conduits, conduit fittings, conductors, connectors, boxes, and wiring devices
shall meet requirements of Specification FAA-C-1217 and Item L-110.
100-2.2 CONDUIT, UNDERGROUND. Conduits run underground are specified in Item L-110 of
these specifications. Existing conduit will remain for reuse and installation of new cables as indicated in
plans.
100-2.3 CONDUIT FITTINGS. Each conduit and nipple entrance to duct and other such electrical
enclosures shall be fitted with double locknuts (one each side of metal penetrated) and insulating bushing.
Bushings on 1-1/4 inch and larger conduits shall be insulated metallic, type OZ/Gedney Cat. No. IBC Series,
or equal; bushings for 3/4 inch and 1 inch shall be plastic insulated T&B rated for 150 C, or equal. All
insulated bonding and grounding bushings of conduits for 2400 volts or higher voltages, for conduit going
underground, and for conduits going into concrete slabs shall be OZ/Gedney Cat. No. IBC-xxL (fitted with
grounding lug), or equal. The bushings shall be connected to the grounding system within the terminating
enclosure and not on the underground end. The buried end of each conduit shall be fitted with a
thermosetting, plastic-insulated, metallic bushing. All openings where conduits enter junction boxes, other
enclosures and shelters shall be sealed weather tight. The conduit shall be capped, if left empty, or sealed
with Ducseal, or equal, around the conductors for exterior conduits.
100-2.4 CONCRETE-ENCASED DUCT. Concrete-encased PVC duct shall be as specified in Item L-
110.
100-2.5 CONCRETE DUCT MARKERS. Markers shall be as specified in Item L-110 and as detailed
on drawings.
100-2.6 CONCRETE HANDHOLES. Hand holes shall be as specified in Item L-115 and as detailed
on drawings.
100-2.7 LIGHT BASES AND TRANSFORMER HOUSING. New light bases, transformer
housings, junction cans and covers shall be specified in item L-115 and as detailed on drawings.
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Electrical General Requirements
CONSTRUCTION METHODS
100-3.1 EXISTING UTILITIES. Prior to any excavation or trenching, Contractor shall provide
utility locator or contact Blue Stake to locate any existing cables and utilities, which will be crossed by the
trench. Where existing underground utilities are shown on plans to conflict with existing conduit removal
and / or new conduit installation, Contractor shall pothole to verify the location and depth. Ensure these
utilities are permanently disconnected if they are going to be demolished. The existing service lines shall
be exposed by hand digging in those areas that will be crossed and shall be protected from any possible
damage. If any damage occurs, it shall be the Contractor's responsibility to immediately repair such damage
with materials and methods approved by the Owner and in compliance with applicable codes and standards,
at Contractor’s expense. Existing utilities to be abandoned shall be removed at the point of crossing as
shown on the drawings.
100-3.2 DEMOLITION. Airfield Lighting and Signage.
a. Removal of existing conductors associated with runway that is required to remain active during
daytime operations (or as required by Airport) may be used to temporarily reconnect the threshold
lights during construction to intercept existing conduit and add new threshold light bases.
b. Removal of cables associated with lighting that is to remain operational during construction shall
be coordinated with Airport. Existing cables may be removed from underground conduits and
sleeved with PVC conduit, secured with sandbags to provide temporary power during construction
as required for facilitating removal of existing and construction of new duct banks, light bases, sign
foundations and hand holes / junction cans.
(1) Coordinate with Airport / Operations for NOTAMs and Lockout / Tag-out of all circuits
affected by construction.
(2) Remove indicated conductors from site and dispose of according to local regulations.
(3) Remove existing clear globes and install clear / yellow globes as indicated on plans.
Return clear globes to Airport.
100-3.3 CONDUCTORS. Installation of underground 5 kV series circuits and parallel circuit
conductors are specified in Item L-108 of these specifications.
100-3.4 GROUNDING. All metal support structures and metal enclosures shall be grounded in
accordance with the requirements of the latest edition of Specifications FAA-C-1217, FAA-C-1391, and FAA-
STD-019, as indicated in Item L-108 and as detailed on the drawings.
100-3.5 GROUND RODS. Grounding rods shall be 3/4-inch diameter by 10 feet long copper-jacketed
steel. Grounding connections to ground rods where buried or encased shall be by the exothermic weld
process, Cadweld or equal. Extruded, drawn or stamped-type ground clamps will not be acceptable. The
resistance to ground shall not exceed 25 ohms.
100-3.6 GROUND CONDUCTORS. Equipment grounding conductors shall be insulated copper,
except where shown on the project drawings to be bare, and sized as shown on the project drawings; and
all grounds will be shown in accordance with Article 250 of the National Electrical Code, with FAA-STD-
019 and Item L-108. Attachment of wire to supports, boxes, etc., shall be accomplished using approved
ground lug attached with a separate stainless steel screw, lock washer and nut. Screws used for support of
the electrical enclosure shall not be used for connection of the ground wire. Pipe straps shall not be used
for ground purposes.
COLOR CODING OF GROUND CONDUCTORS
Buckeye Municipal Airport
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April 2025
L-100-6
Electrical General Requirements
TYPE OF GROUND CONDUCTOR
COLOR OF INSULATION
Grounding Electrode Conductor
Bare (solid)- No Insulation
Counterpoise Conductor
Bare (solid) – No Insulation
External Sign and Transformer
Housing Ground Conductor
Bare – No Insulation
Equipment Grounding Conductor
Green (safety)
The multi-ground system supplements but does not replace the equipment-grounding conductor required
by the National Electrical Code.
Each of these separate ground conductors is insulated in order to keep it distinct and not allow contact with
any other conductor.
Electrical continuity of cable armor or shield shall be maintained. Grounding of the cable armor or shield
shall be required at all terminations and shall be accomplished by connecting a #6 AWG solid bare copper
wire to the cable armor or shield by means of a compression-type ground clamp installed within the
terminating enclosure. Armor or shield ground wire shall be connected to the ground electrode conductor
using split bolt connector, Burndy or equal. Grounding of direct earth burial (DEB) armored power and
shielding control cable shall be at each end in accordance with FAA-C-1391.
100-3.7 CONTRACTOR TESTING AND SUBMITTALS. Equipment and materials list and shop
drawings shall be submitted as per FAA-C-1217, Section 5.1. Testing shall be required and performed as
per FAA-C-1217, Section 5.3, and FAA-C-1391, Section 3.3.6. The Contractor shall pretest all cable on the
reel prior to installation and provide a copy of the test results to the Owner. The Contractor shall be
responsible for repairs or replacement of any cable found defective after installation.
The Contractor shall test existing affected circuits prior to start of construction and the installed airfield
lighting and miscellaneous power cables at the completion of this project. The results of the testing shall be
provided to the Owner for review and acceptance. The Contractor shall be responsible for repairs or
replacement of any cable found defective after installation.
Installation tests in addition to all tests contained in other L-Series Items shall be provided as follows:
Buckeye Municipal Airport
Runway ’17-35’ Non-Precision Approaches
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April 2025
L-100-7
Electrical General Requirements
Item
Test Required
Manufactur
er’s Rep.
Present?
5 kV Rated Airfield Lighting and
Power Cables (On the Reel, Not
Including
Equipment
for
Contractor
Quality
Control.
Maybe deleted per-coordination
with Engineer).
Megger check at 500 to 1000 Volts prior to
installation. Values of insulation resistance for each
reel shall be noted and given to the Construction
Manager/ Owner for acceptance. It is expected that
the readings will be greater than 1000 meg-ohms
(1 gig-ohm).
No
5 kV Rated Airfield Lighting and
Power
Cables
(All
Circuits
Installed in This Project)
Megger check at 500 to 1000 volts at the completion
of installation. Test every circuit for conductor-to-
ground
and
conductor-to-conductor
(between
circuits) insulation resistance. Test results shall be
tabulated
and
given
to
the
Construction
Manager/Owner for acceptance. It is required that
the readings be greater than 100 meg-ohms.
No
5 kV Rated Airfield Lighting and
Power
Cables
(All
Circuits
Installed in This Project)
Megger check at 500 to 1000 volts at the completion
of installation. Test every circuit for conductor-to-
ground
and
conductor-to-conductor
(between
circuits) insulation resistance. Test results shall be
tabulated
and
given
to
the
Construction
Manager/Owner for acceptance.
No
5 kV and 600 Volt and Multi-pair
Cables
If a power cable puller is used, continuous-tape pull
tension readings for each section of cable shall be
provided to the Construction Manager or Owner for
review.
No
100-3.8 NOTIFICATION OF TESTING. The Contractor shall notify the project RE and the
Airport, a minimum of 48 hours in advance of system, or partial system, testing including, but not limited
to, installed cable insulation resistance (megger) testing, and operational testing of any modified lighting
circuit.
METHOD OF MEASUREMENT
100-4.1 REMOVE EXISTING CLEAR RUNWAY EDGE LIGHT GLOBES AND INSTALL
NEW CLEAR/YELLOW GLOBES ON EXISTING FIXTURES. The quantity to be measured shall
be for the removal of the existing edge lighting globes and installation of clear / yellow globes and the return
to the Airport the existing clear globes.
100-4.2 REMOVE EXISTING CONDUCTOR, CONDUIT TO REMAIN. This item shall consist
of removal and disposal off site of existing lighting cable in accordance with the Plans and Specifications
and as accepted. No separate measurement will be made for multiple conductors in an existing conduit.
BASIS OF PAYMENT
100-5.1 ELECTRICAL SERVICES. Payment will be made at the contract price for the electrical
services completed and accepted. This price shall be full compensation for furnishing all materials and for
all labor, equipment, tools, and incidentals necessary to complete these items. The unit price of each of
these items shall also include the Contractor’s overhead, profit, and markup.
Payment will be made under:
Buckeye Municipal Airport
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April 2025
L-100-8
Electrical General Requirements
Item L-100-5.1
Remove Existing Clear Runway Edge Light Globes and Install New
Clear/Yellow Globes on Existing Fixtures – per Each
Item L-100-5.2
Remove Existing Conductor, Conduit to Remain – per Linear Foot
END OF ITEM L-100
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Page L-108-1
Underground Power Cable for Airports
ITEM L-108 UNDERGROUND POWER CABLE FOR AIRPORTS
DESCRIPTION
108-1.1 This item shall consist of furnishing and installing power cables that are direct buried and
furnishing and/or installing power cables within conduit or duct banks per these specifications at the
locations shown on the plans. It includes excavation and backfill of trench for direct-buried cables only.
Also included are the installation of counterpoise wires, ground wires, ground rods and connections, cable
splicing, cable marking, cable testing, and all incidentals necessary to place the cable in operating condition
as a completed unit to the satisfaction of the RPR. This item shall not include the installation of duct banks
or conduit, trenching and backfilling for duct banks or conduit, or furnishing or installation of cable for
FAA owned/operated facilities.
EQUIPMENT AND MATERIALS
108-2.1 GENERAL.
a. Airport lighting equipment and materials covered by advisory circulars (AC) shall be approved under the
Airport Lighting Equipment Certification Program per AC 150/5345-53, current version.
b. All other equipment and materials covered by other referenced specifications shall be subject to
acceptance through manufacturer’s certification of compliance with the applicable specification, when
requested by the RPR.
c. Manufacturer’s certifications shall not relieve the Contractor of the responsibility to provide materials
per these specifications. Materials supplied and/or installed that do not comply with these specifications
shall be removed (when directed by the RPR) and replaced with materials that comply with these
specifications at the Contractor’s cost.
d. All materials and equipment used to construct this item shall be submitted to the RPR for approval prior
to ordering the equipment. Submittals consisting of marked catalog sheets or shop drawings shall be
provided. Submittal data shall be presented in a clear, precise, and thorough manner. Original catalog
sheets are preferred. Photocopies are acceptable provided they are as good a quality as the original. Clearly
and boldly mark each copy to identify products or models applicable to this project. Indicate all optional
equipment and delete any non-pertinent data. Submittals for components of electrical equipment and
systems shall identify the equipment to which they apply on each submittal sheet. Markings shall be made
bold and clear with arrows or circles (highlighting is not acceptable). The Contractor is solely responsible
for delays in the project that may accrue directly or indirectly from late submissions or resubmissions of
submittals.
e. The data submitted shall be sufficient, in the opinion of the RPR, to determine compliance with the plans
and specifications. The Contractor’s submittals shall electronically submitted in pdf format. The RPR
reserves the right to reject any and all equipment, materials, or procedures that do not meet the system
design and the standards and codes, specified in this document.
f. All equipment and materials furnished and installed under this section shall be guaranteed against defects
in materials and workmanship for at least twelve (12) months from the date of final acceptance by the
Owner. The defective materials and/or equipment shall be repaired or replaced, at the Owner’s discretion,
with no additional cost to the Owner. The Contractor shall maintain a minimum insulation resistance in
accordance with paragraph 108-3.10e with isolation transformers connected in new circuits and new
segments of existing circuits through the end of the contract warranty period when tested in accordance
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Underground Power Cable for Airports
with AC 150/5340-26, Maintenance Airport Visual Aid Facilities, paragraph 5.1.3.1, Insulation Resistance
Test.
108-2.2 CABLE. Underground cable for airfield lighting facilities (runway and taxiway lights and signs)
shall conform to the requirements of AC 150/5345-7, Specification for L-824 Underground Electrical Cable
for Airport Lighting Circuits latest edition. Conductors for use on 6.6 ampere primary airfield lighting series
circuits shall be single conductor, seven strand, #8 American wire gauge (AWG), L-824 Type C, 5,000 volts,
non-shielded, with cross-linked polyethylene insulation. Conductors for use on 20 ampere primary airfield
lighting series circuits shall be single conductor, seven strand, #6 AWG, L-824 Type C, 5,000 volts, non-
shielded, with cross-linked polyethylene insulation. L-824 conductors for use on the L-830 secondary of
airfield lighting series circuits shall be sized in accordance with the manufacturer’s recommendations. All
other conductors shall comply with FAA and National Electric Code (NEC) requirements. Conductor sizes
noted above shall not apply to leads furnished by manufacturers on airfield lighting transformers and
fixtures.
Wire for electrical circuits up to 600 volts shall comply with Specification L-824 and/or Commercial Item
Description A-A-59544A and shall be type THWN-2, 75°C for installation in conduit and RHW-2, 75°C for
direct burial installations. Conductors for parallel (voltage) circuits shall be type and size and installed in
accordance with NFPA-70, National Electrical Code.
Unless noted otherwise, all 600-volt and less non-airfield lighting conductor sizes are based on a 75°C,
THWN-2, 600-volt insulation, copper conductors, not more than three single insulated conductors, in
raceway, in free air. The conduit/duct sizes are based on the use of THWN-2, 600-volt insulated
conductors. The Contractor shall make the necessary increase in conduit/duct sizes for other types of wire
insulation. In no case shall the conduit/duct size be reduced. The minimum power circuit wire size shall
be #12 AWG.
Conductor sizes may have been adjusted due to voltage drop or other engineering considerations.
Equipment provided by the Contractor shall be capable of accepting the quantity and sizes of conductors
shown in the Contract Documents. All conductors, pigtails, cable step-down adapters, cable step-up
adapters, terminal blocks, and splicing materials necessary to complete the cable termination/splice shall
be considered incidental to the respective pay items provided.
Cable type, size, number of conductors, strand and service voltage shall be as specified in the Contract
Document.
108-2.3 BARE COPPER WIRE (COUNTERPOISE, BARE COPPER WIRE GROUND AND
GROUND RODS). Wire for counterpoise or ground installations for airfield lighting systems shall be No.
6 AWG bare solid copper wire for counterpoise and/or No. 6 AWG insulated stranded for grounding bond
wire per ASTM B3 and ASTM B8 and shall be bare copper wire. For voltage powered circuits, the equipment
grounding conductor shall comply with NEC Article 250.
Ground rods shall be copper-clad steel. The ground rods shall be of the length and diameter specified on
the plans, but in no case be less than 10 feet long and 3/4 inch in diameter.
108-2.4 CABLE CONNECTIONS. In-line connections or splices of underground primary cables shall
be of the type called for on the plans and shall be one of the types listed below. No separate payment will be
made for cable connections.
a. The cast splice. A cast splice, employing a plastic mold and using epoxy resin equivalent to that
manufactured by 3MTM Company, “Scotchcast” Kit No. 82-B, or an approved equivalent, used for potting
the splice is acceptable.
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Underground Power Cable for Airports
b. The field-attached plug-in splice. Field attached plug-in splices shall be installed as shown on the plans.
The Contractor shall determine the outside diameter of the cable to be spliced and furnish appropriately
sized connector kits and/or adapters. Tape or heat shrink tubing with integral sealant shall be in accordance
with the manufacturer’s requirements. Primary Connector Kits manufactured by Amerace, "Super Kit",
Integro "Complete Kit", or approved equal is acceptable.
c. The factory-molded plug-in splice. Specification for L-823 Connectors, Factory-Molded to Individual
Conductors, is acceptable.
d. The taped or heat-shrink splice. Taped splices employing field-applied rubber, or synthetic rubber tape
covered with plastic tape is acceptable. The rubber tape should meet the requirements of ASTM D4388 and
the plastic tape should comply with Military Specification MIL-I-24391 or Commercial Item Description A-
A-55809. Heat shrinkable tubing shall be heavy-wall, self-sealing tubing rated for the voltage of the wire
being spliced and suitable for direct-buried installations. The tubing shall be factory coated with a
thermoplastic adhesive-sealant that will adhere to the insulation of the wire being spliced forming a
moisture- and dirt-proof seal. Additionally, heat shrinkable tubing for multi-conductor cables, shielded
cables, and armored cables shall be factory kits that are designed for the application. Heat shrinkable tubing
and tubing kits shall be manufactured by Tyco Electronics/ Raychem Corporation, Energy Division, or
approved equivalent.
In all the above cases, connections of cable conductors shall be made using crimp connectors using a
crimping tool designed to make a complete crimp before the tool can be removed. All L-823/L-824 splices
and terminations shall be made per the manufacturer’s recommendations and listings.
All connections of counterpoise, grounding conductors and ground rods shall be made by the exothermic
process or approved equivalent, except that a light base ground clamp connector shall be used for
attachment to the light base. All exothermic connections shall be made per the manufacturer’s
recommendations and listings.
108-2.5 SPLICER QUALIFICATIONS. Every airfield lighting cable splicer shall be qualified in
making airport cable splices and terminations on cables rated at or above 5,000 volts AC. The Contractor
shall submit to the RPR proof of the qualifications of each proposed cable splicer for the airport cable type
and voltage level to be worked on. Cable splicing/terminating personnel shall have a minimum of three (3)
years continuous experience in terminating/splicing medium voltage cable.
108-2.6 CONCRETE. Concrete shall be proportioned, placed, and cured per Item P-610, Concrete for
Miscellaneous Structures.
108-2.7 FLOWABLE BACKFILL. Flowable material used to backfill trenches for power cable trenches
shall conform to the requirements of Item P-153, Controlled Low Strength Material.
108-2.8 CABLE IDENTIFICATION TAGS. Cable identification tags shall be made from a non-
corrosive material with the circuit identification stamped or etched onto the tag. The tags shall be of the
type as detailed on the plans.
108-2.9 TAPE. Electrical tapes shall be ScotchTM Electrical Tapes –ScotchTM 88 (1-1/2-inch wide) and
ScotchTM 130C® linerless rubber splicing tape (2-inch wide), as manufactured by the Minnesota Mining and
Manufacturing Company (3MTM), or an approved equivalent.
108-2.10 ELECTRICAL COATING. Electrical coating shall be Scotchkote™ as manufactured by
3MTM, or an approved equivalent.
108-2.11 EXISTING CIRCUITS. Whenever the scope of work requires connection to an existing
circuit, the existing circuit’s insulation resistance shall be tested, in the presence of the RPR. The test shall
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be performed per this item and prior to any activity that will affect the respective circuit. The Contractor
shall record the results on forms acceptable to the RPR. When the work affecting the circuit is complete,
the circuit’s insulation resistance shall be checked again, in the presence of the RPR. The Contractor shall
record the results on forms acceptable to the RPR. The second reading shall be equal to or greater than the
first reading or the Contractor shall make the necessary repairs to the existing circuit to bring the second
reading above the first reading. All repair costs including a complete replacement of the L-823 connectors,
L-830 transformers and L-824 cable, if necessary, shall be borne by the Contractor. All test results shall be
submitted in the Operation and Maintenance (O&M) Manual
108-2.12 DETECTABLE WARNING TAPE. Plastic, detectable, American Public Works Association
(APWA) Red (electrical power lines, cables, conduit, and lighting cable) with continuous legend tape shall
be polyethylene film with a metalized foil core and shall be 3-6 inches wide. Detectable tape is incidental to
the respective bid item. Detectable warning tape for communication cables shall be orange. Detectable
warning tape color code shall comply with the APWA Uniform Color Code.
CONSTRUCTION METHODS
108-3.1 GENERAL. The Contractor shall install the specified cable at the approximate locations
indicated on the plans. Unless otherwise shown on the plans, all cable required to cross under pavements
expected to carry aircraft loads shall be installed in concrete encased duct banks. Cable shall be run without
splices, from fixture to fixture.
Cable connections between lights will be permitted only at the light locations for connecting the
underground cable to the primary leads of the individual isolation transformers. The Contractor shall be
responsible for providing cable in continuous lengths for home runs or other long cable runs without
connections unless otherwise authorized in writing by the RPR or shown on the plans.
In addition to connectors being installed at individual isolation transformers, L-823 cable connectors for
maintenance and test points shall be installed at locations shown on the plans. Cable circuit identification
markers shall be installed on both sides of the L-823 connectors installed and on both sides of slack loops
where a future connector would be installed.
Provide not less than 3 feet of cable slack on each side of all connections, isolation transformers, light units,
and at points where cable is connected to field equipment. Where provisions must be made for testing or
for future above grade connections, provide enough slack to allow the cable to be extended at least one foot
vertically above the top of the access structure. This requirement also applies where primary cable passes
through empty light bases, junction boxes, and access structures to allow for future connections, or as
designated by the RPR.
Primary airfield lighting cables installed shall have cable circuit identification markers attached on both
sides of each L-823 connector and on each airport lighting cable entering or leaving cable access points,
such as manholes, hand holes, pull boxes, junction boxes, etc. Markers shall be of sufficient length for
imprinting the cable circuit identification legend on one line, using letters not less than 1/4 inch in size. The
cable circuit identification shall match the circuits noted on the construction plans.
108-3.2 INSTALLATION IN DUCT BANKS OR CONDUITS. This item includes the installation
of the cable in duct banks or conduit per the following paragraphs. The maximum number and voltage
ratings of cables installed in each single duct or conduit, and the current-carrying capacity of each cable
shall be per the latest version of the National Electric Code, or the code of the local agency or authority
having jurisdiction.
The Contractor shall make no connections or splices of any kind in cables installed in conduits or duct
banks.
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Unless otherwise designated in the plans, where ducts are in tiers, use the lowest ducts to receive the cable
first, with spare ducts left in the upper levels. Check duct routes prior to construction to obtain assurance
that the shortest routes are selected and that any potential interference is avoided.
Duct banks or conduits shall be installed as a separate item per Item L-110, Airport Underground Electrical
Duct Banks and Conduit. The Contractor shall run a mandrel through duct banks or conduit prior to
installation of cable to ensure that the duct bank or conduit is open, continuous, and clear of debris. The
mandrel size shall be compatible with the conduit size. The Contractor shall swab out all conduits/ducts
and clean light bases, manholes, etc., interiors immediately prior to pulling cable. Once cleaned and
swabbed, the light bases and all accessible points of entry to the duct/conduit system shall be kept closed
except when installing cables. Cleaning of ducts, light bases, manholes, etc., is incidental to the pay item of
the item being cleaned. All raceway systems left open, after initial cleaning, for any reason shall be re-
cleaned at the Contractor’s expense. The Contractor shall verify existing ducts proposed for use in this
project as clear and open. The Contractor shall notify the RPR of any blockage in the existing ducts.
The cable shall be installed in a manner that prevents harmful stretching of the conductor, damage to the
insulation, or damage to the outer protective covering. The ends of all cables shall be sealed with moisture-
seal tape providing moisture-tight mechanical protection with minimum bulk, or alternately, heat
shrinkable tubing before pulling into the conduit and it shall be left sealed until connections are made.
Where more than one cable is to be installed in a conduit, all cable shall be pulled in the conduit at the same
time. The pulling of a cable through duct banks or conduits may be accomplished by hand winch or power
winch with the use of cable grips or pulling eyes. Maximum pulling tensions shall not exceed the cable
manufacturer’s recommendations. A non-hardening cable-pulling lubricant recommended for the type of
cable being installed shall be used where required.
The Contractor shall submit the recommended pulling tension values to the RPR prior to any cable
installation. If required by the RPR, pulling tension values for cable pulls shall be monitored by a
dynamometer in the presence of the RPR. Cable pull tensions shall be recorded by the Contractor and
reviewed by the RPR. Cables exceeding the maximum allowable pulling tension values shall be removed
and replaced by the Contractor at the Contractor’s expense.
The manufacturer’s minimum bend radius or NEC requirements (whichever is more restrictive) shall apply.
Cable installation, handling and storage shall be per manufacturer’s recommendations. During cold
weather, particular attention shall be paid to the manufacturer’s minimum installation temperature. Cable
shall not be installed when the temperature is at or below the manufacturer’s minimum installation
temperature. At the Contractor’s option, the Contractor may submit a plan, for review by the RPR, for
heated storage of the cable and maintenance of an acceptable cable temperature during installation when
temperatures are below the manufacturer’s minimum cable installation temperature.
Cable shall not be dragged across base can or manhole edges, pavement, or earth. When cable must be
coiled, lay cable out on a canvas tarp, or use other appropriate means to prevent abrasion to the cable jacket.
108-3.3 INSTALLATION OF DIRECT-BURIED CABLE IN TRENCHES. Unless otherwise
specified, the Contractor shall not use a cable plow for installing the cable. Cable shall be unreeled uniformly
in place alongside or in the trench and shall be carefully placed along the bottom of the trench. The cable
shall not be unreeled and pulled into the trench from one end. Slack cable sufficient to provide strain relief
shall be placed in the trench in a series of S curves. Sharp bends or kinks in the cable shall not be permitted.
Where cables must cross over each other, a minimum of 3 inches vertical displacement shall be provided
with the topmost cable depth at or below the minimum required depth below finished grade.
a. Trenching. Where turf is well established and the sod can be removed, it shall be carefully stripped and
properly stored. Trenches for cables may be excavated manually or with mechanical trenching equipment.
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Walls of trenches shall be essentially vertical so that a minimum of surface is disturbed. Graders shall not
be used to excavate the trench with their blades. The bottom surface of trenches shall be essentially smooth
and free from coarse aggregate. Unless otherwise specified, cable trenches shall be excavated to a minimum
depth of 18 inches (0.5 m) below finished grade per NEC Table 300.5, except as follows:
When off the airport or crossing under a roadway or driveway, the minimum depth shall be 36 inches unless
otherwise specified.
Minimum cable depth when crossing under a railroad track, shall be 42 inches unless otherwise specified.
The Contractor shall excavate all cable trenches to a width not less than 6 inches. Unless otherwise specified
on the plans, all cables in the same location and running in the same general direction shall be installed in
the same trench.
When rock is encountered, the rock shall be removed to a depth of at least 3 inches below the required cable
depth and it shall be replaced with bedding material of earth or sand containing no mineral aggregate
particles that would be retained on a 1/4-inch sieve. Flowable backfill material may alternatively be used.
Duct bank or conduit markers temporarily removed for trench excavations shall be replaced as required.
It is the Contractor’s responsibility to locate existing utilities within the work area prior to excavation.
Where existing active cables cross proposed installations, the Contractor shall ensure that these cables are
adequately protected. Where crossings are unavoidable, no splices will be allowed in the existing cables,
except as specified on the plans. Installation of new cable where such crossings must occur shall proceed as
follows:
(1) Existing cables shall be located manually. Unearthed cables shall be inspected to assure absolutely no
damage has occurred.
(2) Trenching, etc., in cable areas shall then proceed, with approval of the RPR, with care taken to minimize
possible damage or disruption of existing cable, including careful backfilling in area of cable.
In the event that any previously identified cable is damaged during the course of construction, the
Contractor shall be responsible for the complete repair or replacement.
b. Backfilling. After the cable has been installed, the trench shall be backfilled. The first layer of backfill in
the trench shall encompass all cables; be 3 inches deep, loose measurement; and shall be either earth or
sand containing no mineral aggregate particles that would be retained on a 1/4-inch sieve. This layer shall
not be compacted. The second layer shall be 5 inches deep, loose measurement, and shall contain no
particles that would be retained on a one-inch sieve. The remaining third and subsequent layers of backfill
shall not exceed 8 inches of loose measurement and be excavated or imported material and shall not contain
stone or aggregate larger than 4 inches maximum diameter.
The second and subsequent layers shall be thoroughly tamped and compacted to at least the density of the
adjacent material. If the cable is to be installed in locations or areas where other compaction requirements
are specified (under pavements, embankments, etc.) the backfill compaction shall be to a minimum of 100
percent of ASTM D1557 or backfilled with controlled low strength material (CLSM) in accordance with P-
153 as indicated on plans.
Trenches shall not contain pools of water during backfilling operations. The trench shall be completely
backfilled and tamped level with the adjacent surface, except that when turf is to be established over the
trench, the backfilling shall be stopped at an appropriate depth consistent with the type of turfing operation
to be accommodated. A proper allowance for settlement shall also be provided. Any excess excavated
material shall be removed and disposed of per the plans and specifications.
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Underground electrical warning (caution) tape shall be installed in the trench above all direct-buried cable.
Contractor shall submit a sample of the proposed warning tape for acceptance by the RPR. If not shown on
the plans, the warning tape shall be located 6 inches above the direct-buried cable or the counterpoise wire
if present. A 3-6-inch-wide polyethylene film detectable tape, with a metalized foil core, shall be installed
above all direct buried cable or counterpoise. The tape shall be of the color and have a continuous legend as
indicated on the plans. The tape shall be installed 8 inches minimum below finished grade.
c. Restoration. Following restoration of all trenching near airport movement surfaces, the Contractor shall
visually inspect the area for foreign object debris (FOD) and remove any that is found. Where soil and sod
has been removed, it shall be replaced as soon as possible after the backfilling is completed. All areas
disturbed by work shall be restored to its original condition. The restoration shall include the sodding, top
soiling, fertilizing, liming, seeding, sprigging, or mulching as shown on the plans. The Contractor shall be
held responsible for maintaining all disturbed surfaces and replacements until final acceptance. When
trenching is through paved areas, restoration shall be equal to existing conditions. If the cable is to be
installed in locations or areas where other compaction requirements are specified (under pavements,
embankments, etc.) the backfill compaction shall be to a minimum of 100 percent of ASTM
D1557 or backfilled with controlled low strength material (CLSM) in accordance with P-153 as indicated in
plans. Restoration shall be considered incidental to the pay item of which it is a component part.
108-3.4 CABLE MARKERS FOR DIRECT-BURIED CABLE. The location of direct buried circuits
shall be marked by a concrete slab marker, 2 feet square and 4-6-inch-thick, extending approximately one
inch above the surface. Each cable run from a line of lights and signs to the equipment vault shall be marked
approximately every 200 feet along the cable run, with an additional marker at each change of direction of
cable run. All other direct-buried cable shall be marked in the same manner. Cable markers shall be
installed directly above the cable. The Contractor shall impress the word “CABLE” and directional arrows
on each cable marking slab. The letters shall be approximately 4 inches high and 3 inches wide, with width
of stroke 1/2 inch and 1/4 inch deep. Stencils shall be used for cable marker lettering; no hand lettering
shall be permitted.
At the location of each underground cable connection/splice, except at lighting units, or isolation
transformers, a concrete marker slab shall be installed to mark the location of the connection/splice. The
Contractor shall impress the word “SPLICE” on each slab. The Contractor also shall impress additional
circuit identification symbols on each slab as directed by the RPR. All cable markers and splice markers
shall be painted international orange. Paint shall be specifically manufactured for uncured exterior
concrete. After placement, all cable or splice markers shall be given one coat of high-visibility aviation
orange paint as approved by the RPR. Furnishing and installation of cable markers is incidental to the
respective cable pay item.
108-3.5 SPLICING. Connections of the type shown on the plans shall be made by experienced
personnel regularly engaged in this type of work and shall be made as follows:
a. Cast splices. These shall be made by using crimp connectors for jointing conductors. Molds shall be
assembled, and the compound shall be mixed and poured per the manufacturer’s instructions and
to the satisfaction of the RPR.
b. Field-attached plug-in splices. These shall be assembled per the manufacturer’s instructions. These
splices shall be made by plugging directly into mating connectors. The joint where the connectors
come together shall be finished by one of the following methods: (1) wrapped with at least one layer
of rubber or synthetic rubber tape and one layer of plastic tape, one-half lapped, extending at least
1-1/2 inches on each side of the joint (2) Covered with heat shrinkable tubing with integral sealant
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extending at least 1-1/2 inches on each side of the joint or (3) On connector kits equipped with water
seal flap; roll-over water seal flap to sealing position on mating connector.
c. Factory-molded plug-in splices. These shall be made by plugging directly into mating connectors.
The joint where the connectors come together shall be finished by one of the following methods: (1)
Wrapped with at least one layer of rubber or synthetic rubber tape and one layer of plastic tape,
one-half lapped, extending at least 1-1/2 inches on each side of the joint. (2) Covered with heat
shrinkable tubing with integral sealant extending at least 1-1/2 inches on each side of the joint. or
(3) On connector kits so equipped with water seal flap; roll-over water seal flap to sealing position
on mating connector.
d. Taped or heat-shrink splices. A taped splice shall be made in the following manner:
Bring the cables to their final position and cut so that the conductors will butt. Remove insulation
and jacket allowing for bare conductor of proper length to fit compression sleeve connector with
1/4 inch of bare conductor on each side of the connector. Prior to splicing, the two ends of the cable
insulation shall be penciled using a tool designed specifically for this purpose and for cable size and
type. Do not use emery paper on splicing operation since it contains metallic particles. The copper
conductors shall be thoroughly cleaned. Join the conductors by inserting them equidistant into the
compression connection sleeve. Crimp conductors firmly in place with crimping tool that requires
a complete crimp before tool can be removed. Test the crimped connection by pulling on the cable.
Scrape the insulation to assure that the entire surface over which the tape will be applied (plus 3
inches on each end) is clean. After scraping, wipe the entire area with a clean lint-free cloth. Do not
use solvents.
Apply high-voltage rubber tape one-half lapped over bare conductor. This tape should be tensioned
as recommended by the manufacturer. Voids in the connector area may be eliminated by highly
elongating the tape, stretching it just short of its breaking point. The manufacturer's
recommendation for stretching tape during splicing shall be followed. Always attempt to exactly
half-lap to produce a uniform buildup. Continue buildup to 1-1/2 times cable diameter over the
body of the splice with ends tapered a distance of approximately one inch over the original jacket.
Cover rubber tape with two layers of vinyl pressure-sensitive tape one-half lapped. Do not use
glyptol or lacquer over vinyl tape as they react as solvents to the tape. No further cable covering or
splice boxes are required.
Heat shrinkable tubing shall be installed following manufacturer’s instructions. Direct flame
heating shall not be permitted unless recommended by the manufacturer. Cable surfaces within the
limits of the heat-shrink application shall be clean and free of contaminates prior to application.
e. Assembly. Surfaces of equipment or conductors being terminated or connected shall be prepared
in accordance with industry standard practice and manufacturer’s recommendations. All surfaces
to be connected shall be thoroughly cleaned to remove all dirt, grease, oxides, nonconductive films,
or other foreign material. Paints and other nonconductive coatings shall be removed to expose base
metal. Clean all surfaces at least 1/4 inch beyond all sides of the larger bonded area on all mating
surfaces. Use a joint compound suitable for the materials used in the connection. Repair
painted/coated surface to original condition after completing the connection.
108-3.6 BARE COUNTERPOISE WIRE INSTALLATION FOR LIGHTNING PROTECTION
AND GROUNDING. If shown on the plans or included in the job specifications, bare solid #6 AWG
copper counterpoise wire shall be installed for lightning protection of the underground cables. The RPR
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shall select one of two methods of lightning protection for the airfield lighting circuit based upon sound
engineering practice and lightning strike density.
a. Equipotential. Equipotential may be used by the RPR for areas that have high rates of lightning
strikes. The counterpoise size is determined by the RPR. The equipotential method is applicable
to all airfield lighting systems, i.e., runway, taxiway, apron – touchdown zone, centerline, edge,
threshold, and approach lighting systems. The equipotential method is also successfully applied to
provide lightning protection for power, signal, and communication systems. The light bases,
counterpoise, etc., – all components - are bonded together and bonded to the vault power system
ground loop/electrode.
Counterpoise wire shall be installed in the same trench for the entire length of buried cable,
conduits and duct banks that are installed to contain airfield cables. The counterpoise is centered
over the cable/conduit/duct to be protected.
The counterpoise conductor shall be installed no less than 8 inches minimum or 12 inches
maximum above the raceway or cable to be protected, except as permitted below:
(1) The minimum counterpoise conductor height above the raceway or cable to be protected shall
be permitted to be adjusted subject to coordination with the airfield lighting and pavement designs.
(2) The counterpoise conductor height above the protected raceway(s) or cable(s) shall be
calculated to ensure that the raceway or cable is within a 45-degree area of protection, (45 degrees
on each side of vertical creating a 90-degree angle).
The counterpoise conductor shall be bonded to each metallic light base, mounting stake, and
metallic airfield lighting component.
All metallic airfield lighting components in the field circuit on the output side of the constant
current regulator (CCR) or other power source shall be bonded to the airfield lighting counterpoise
system.
All components rise and fall at the same potential, with no potential difference, no damaging arcing,
and no damaging current flow.
See AC 150/5340-30, Design and Installation Details for Airport Visual Aids and NFPA 780,
Standard for the Installation of Lightning Protection Systems, Chapter 11, for a detailed description
of the Equipotential Method of lightning protection.
Reference FAA STD-019E, Lightning and Surge Protection, Grounding Bonding and Shielding
Requirements for Facilities and Electronic Equipment, Part 4.1.1.7.
b. Isolation – used in areas where lightning strikes are not common. Counterpoise size is selected by
the RPR. The isolation method is an alternate method for use only with edge lights installed in turf
and stabilized soils and raceways installed parallel to and adjacent to the edge of the pavement.
NFPA 780 uses 15 feet to define “adjacent to”.
The counterpoise conductor shall be installed 8 inches (203 mm) minimum below grade. The
counterpoise is not connected to the light base or mounting stake. An additional grounding
electrode is required at each light base or mounting stake. The grounding electrode is bonded to
the light base or mounting stake with a 6 AWG solid copper conductor.
See AC 150/5340-30, Design and Installation Details for Airport Visual Aids and NFPA 780,
Standard for the Installation of Lightning Protection Systems, Chapter 11, for a detailed description
of the Isolation Method of lightning protection.
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c. Common Installation requirements. When a metallic light base is used, the grounding electrode
shall be bonded to the metallic light base or mounting stake with a No. 6 AWG bare, annealed, or
soft drawn, solid copper conductor.
When a nonmetallic light base is used, the grounding electrode shall be bonded to the metallic light
fixture or metallic base plate with a No. 6 AWG bare, annealed, or soft drawn, solid copper
conductor.
Grounding electrodes may be rods, ground dissipation plates, radials, or other electrodes listed in
the NFPA 70 (NEC) or NFPA 780.
Where raceway is installed by the directional bore, jack and bore, or other drilling method, the
counterpoise conductor shall be permitted to be installed concurrently with the directional bore,
jack and bore, or other drilling method raceway, external to the raceway or sleeve.
The counterpoise wire shall also be exothermically welded to ground rods installed as shown on the
plans but not more than 500 feet apart around the entire circuit. The counterpoise system shall be
continuous and terminate at the transformer vault or at the power source. It shall be securely
attached to the vault or equipment external ground ring or other made electrode-grounding system.
The connections shall be made as shown on the plans and in the specifications.
Where an existing airfield lighting system is being extended or modified, the new counterpoise
conductors shall be interconnected to existing counterpoise conductors at each intersection of the
new and existing airfield lighting counterpoise systems.
d. Parallel Voltage Systems. Provide grounding and bonding in accordance with NFPA 70, National
Electrical Code.
108-3.7 COUNTERPOISE INSTALLATION ABOVE MULTIPLE CONDUITS AND DUCT
BANKS. Counterpoise wires shall be installed above multiple conduits/duct banks for airfield lighting
cables, with the intent being to provide a complete area of protection over the airfield lighting cables. When
multiple conduits and/or duct banks for airfield cable are installed in the same trench, the number and
location of counterpoise wires above the conduits shall be adequate to provide a complete area of protection
measured 45 degrees each side of vertical.
Where duct banks pass under pavement to be constructed in the project, the counterpoise shall be placed
above the duct bank. Reference details on the construction plans.
108-3.8 COUNTERPOISE INSTALLATION AT EXISTING DUCT BANKS. When airfield
lighting cables are indicated on the plans to be routed through existing duct banks, the new counterpoise
wiring shall be terminated at ground rods at each end of the existing duct bank where the cables being
protected enter and exit the duct bank. The new counterpoise conductor shall be bonded to the existing
counterpoise system.
108-3.9 EXOTHERMIC BONDING. Bonding of counterpoise wire shall be by the exothermic welding
process or equivalent method accepted by the RPR. Only personnel experienced in and regularly engaged
in this type of work shall make these connections.
Contractor shall demonstrate to the satisfaction of the RPR, the welding kits, materials, and procedures to
be used for welded connections prior to any installations in the field. The installations shall comply with
the manufacturer’s recommendations and the following:
a. All slag shall be removed from welds.
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b. Using an exothermic weld to bond the counterpoise to a lug on a galvanized light base is not
recommended unless the base has been specially modified. Consult the manufacturer’s installation
directions for proper methods of bonding copper wire to the light base. See AC 150/5340-30 for
galvanized light base exception.
c. If called for in the plans, all buried copper and weld material at weld connections shall be
thoroughly coated with 6 mm of 3MTM ScotchkoteTM, or approved equivalent, or coated with coal
tar Bitumastic® material to prevent surface exposure to corrosive soil or moisture.
108-3.10 TESTING. The Contractor shall furnish all necessary equipment and appliances for testing
the airport electrical systems and underground cable circuits before and after installation. The Contractor
shall perform all tests in the presence of the RPR. The Contractor shall demonstrate the electrical
characteristics to the satisfaction of the RPR. All costs for testing are incidental to the respective item being
tested. For phased projects, the tests must be completed by phase. The Contractor must maintain the test
results throughout the entire project as well as during the warranty period that meet the following:
a. Earth resistance testing methods shall be submitted to the RPR for approval. Earth resistance
testing results shall be recorded on an approved form and testing shall be performed in the presence
of the RPR. All such testing shall be at the sole expense of the Contractor.
b. Should the counterpoise or ground grid conductors be damaged or suspected of being damaged by
construction activities the Contractor shall test the conductors for continuity with a low resistance
ohmmeter. The conductors shall be isolated such that no parallel path exists and tested for
continuity. The RPR shall approve of the test method selected. All such testing shall be at the sole
expense of the Contractor.
After installation, the Contractor shall test and demonstrate to the satisfaction of the RPR the
following:
(1) That all affected lighting power and control circuits (existing and new) are continuous and free
from short circuits.
(2) That all affected circuits (existing and new) are free from unspecified grounds.
(3) That the insulation resistance to ground of all new non-grounded high voltage series circuits or
cable segments is not less than 100 megohms. Verify continuity of all series airfield lighting
circuits prior to energization.
(4) That the insulation resistance to ground of all new non-grounded conductors of new multiple
circuits or circuit segments is not less than 100 megohms.
(5) That all affected circuits (existing and new) are properly connected per applicable wiring
diagrams.
(6) That all affected circuits (existing and new) are operable. Tests shall be conducted that include
operating each control not less than 10 times and the continuous operation of each lighting and
power circuit for not less than 1/2 hour.
c. That the impedance to ground of each ground rod does not exceed 25 ohms prior to establishing
connections to other ground electrodes. The fall-of-potential ground impedance test shall be used,
as described by American National Standards Institute/Institute of Electrical and Electronic
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Engineers (ANSI/IEEE) Standard 81, to verify this requirement. As an alternate, clamp-on style
ground impedance test meters may be used to satisfy the impedance testing requirement. Test
equipment and its calibration sheets shall be submitted for review and approval by the RPR prior
to performing the testing.
Two copies of tabulated results of all cable tests performed shall be supplied by the Contractor to
the RPR. Where connecting new cable to existing cable, insulation resistance tests shall be
performed on the new cable prior to connection to the existing circuit.
There are no approved “repair” procedures for items that have failed testing other than complete
replacement.
METHOD OF MEASUREMENT
108-4.1 CABLE OR COUNTERPOISE WIRE INSTALLED IN TRENCH, DUCT BANK OR
CONDUIT SHALL BE MEASURED BY THE NUMBER OF LINEAR FEET INSTALLED WITH
PRIMARY
CONNECTOR
KITS,
GROUNDING
CONDUCTOR
AND
GROUNDING
CONNECTORS READY FOR OPERATION, AND ACCEPTED BY OWNER / ENGINEER.
Separate measurement shall be made for each single cable (1/C), cable pair (2/C) or feeder set, installed in
duct bank or conduit with associated ground wire and connections included in Contractor’s price. The
measurement for this item shall include additional quantities required for slack. No separate measurement
will be made to multiply the number of individual conductors installed in a single conduit, in one
installation effort.
108-4.2 COUNTERPOISE WIRE and connections are considered incidental to the installation of
duct bank or conduit, per item L-110. No separate payment will be made.
108-4.3 GROUND RODS shall be considered incidental to the installation of counterpoise, light base,
transformer housing, sign, or other grounding. No separate payment will be made.
BASIS OF PAYMENT
108-5.1 PAYMENT will be made at the contract unit price for cable and equipment ground installed in
duct bank or conduit, in place by the Contractor and accepted by the Engineer. This price shall be full
compensation for furnishing all materials and for all preparation and installation of these materials, and
for all labor, equipment, tools, and incidentals, including ground rods and ground connectors and trench
marking tape, necessary to complete this item.
Payment will be made under:
Item L-108-5.1
L-824, Type C, 1/C #8 AWG, 5kV Cable – per Linear Foot
REFERENCES
The publications listed below form a part of this specification to the extent referenced. The publications are
referred to within the text by the basic designation only.
Advisory Circulars (AC)
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Underground Power Cable for Airports
AC 150/5340-26
Maintenance of Airport Visual Aid Facilities
AC 150/5340-30
Design and Installation Details for Airport Visual Aids
AC 150/5345-7
Specification for L-824 Underground Electrical Cable for Airport Lighting Circuits
AC 150/5345-26
Specification for L-823 Plug and Receptacle, Cable Connectors
AC 150/5345-53
Airport Lighting Equipment Certification Program
Commercial Item Description
A-A-59544A
Cable and Wire, Electrical (Power, Fixed Installation)
A-A-55809
Insulation Tape, Electrical, Pressure-Sensitive Adhesive, Plastic
ASTM International (ASTM)
ASTM B3
Standard Specification for Soft or Annealed Copper Wire
ASTM B8
Standard Specification for Concentric-Lay-Stranded Copper Conductors, Hard,
Medium-Hard, or Soft
ASTM B33
Standard Specification for Tin-Coated Soft or Annealed Copper Wire for Electrical
Purposes
ASTM D4388
Standard Specification for Nonmetallic Semi-Conducting and Electrically
Insulating Rubber Tapes
Mil Spec
MIL-PRF-23586F
Performance Specification: Sealing Compound (with Accelerator), Silicone
Rubber, Electrical
MIL-I-24391
Insulation Tape, Electrical, Plastic, Pressure Sensitive
National Fire Protection Association (NFPA)
NFPA-70
National Electrical Code (NEC)
NFPA-780
Standard for the Installation of Lightning Protection Systems
American National Standards Institute (ANSI)/Institute of Electrical and Electronics Engineers (IEEE)
ANSI/IEEE STD 81
IEEE Guide for Measuring Earth Resistivity, Ground Impedance, and Earth
Surface Potentials of a Ground System
Federal Aviation Administration Standard
FAA STD-019E Lightning and Surge Protection, Grounding Bonding and Shielding Requirements for
Facilities and Electronic Equipment
END OF ITEM L-108
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Underground Power Cable for Airports
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L-110-1
Airport Underground Electrical Duct
Banks and Conduits
ITEM L-110 AIRPORT UNDERGROUND ELECTRICAL
DUCT BANKS AND CONDUITS
DESCRIPTION
110-1.1 This item shall consist of underground electrical conduits and duct banks (single or multiple
conduits encased in concrete or buried in sand) installed per this specification at the locations and per the
dimensions, designs, and details shown on the plans. This item shall include furnishing and installing of
all underground electrical duct banks and individual and multiple underground conduits. It shall also
include all turfing trenching, backfilling, removal, and restoration of any paved or turfed areas; concrete
encasement, mandrelling, pulling lines, duct markers, plugging of conduits, and the testing of the
installation as a completed system ready for installation of cables per the plans and specifications. This
item shall also include furnishing and installing conduits and all incidentals for providing positive
drainage of the system. Verification of existing ducts is incidental to the pay items provided in this
specification.
EQUIPMENT AND MATERIALS
110-2.1 GENERAL.
a. All equipment and materials covered by referenced specifications shall be subject to acceptance
through manufacturer’s certification of compliance with the applicable specification when
requested by the RPR.
b. Manufacturer’s certifications shall not relieve the Contractor of the responsibility to provide
materials per these specifications and acceptable to the RPR. Materials supplied and/or installed
that do not comply with these specifications shall be removed, when directed by the RPR and
replaced with materials, that comply with these specifications, at the Contractor’s cost.
c. All materials and equipment used to construct this item shall be submitted to the RPR for
approval prior to ordering the equipment. Submittals consisting of marked catalog sheets or shop
drawings shall be provided. Submittal data shall be presented in a clear, precise and thorough
manner. Original catalog sheets are preferred. Photocopies are acceptable provided they are as
good a quality as the original. Clearly and boldly mark each copy to identify products or models
applicable to this project. Indicate all optional equipment and delete non-pertinent data.
Submittals for components of electrical equipment and systems shall identify the equipment for
which they apply on each submittal sheet. Markings shall be made bold and clear with arrows or
circles (highlighting is not acceptable). The Contractor is solely responsible for delays in project
that accrue directly or indirectly from late submissions or resubmissions of submittals.
d. The data submitted shall be sufficient, in the opinion of the RPR, to determine compliance with
the plans and specifications. The Contractor’s submittals shall be electronically submitted in pdf
format, tabbed by specification section. The RPR reserves the right to reject any and all
equipment, materials or procedures that do not meet the system design and the standards and
codes specified in this document.
e. All equipment and materials furnished and installed under this section shall be guaranteed
against defects in materials and workmanship for a period of at least twelve (12) months from
final acceptance by the Owner. The defective materials and/or equipment shall be repaired or
replaced, at the Owner’s discretion, with no additional cost to the Owner.
110-2.2 STEEL CONDUIT. Rigid galvanized steel (RGS) conduit and fittings shall be hot dipped
galvanized inside and out and conform to the requirements of Underwriters Laboratories Standards 6,
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L-110-2
Airport Underground Electrical Duct
Banks and Conduits
514B, and 1242. All RGS conduits or RGS elbows installed below grade, in concrete, permanently wet
locations or other similar environments shall be painted with a 10-mil thick coat of asphaltum sealer or
shall have a factory-bonded polyvinyl chloride (PVC) cover. Any exposed galvanizing or steel shall be
coated with 10 mils of asphaltum sealer. When using PVC coated RGS conduit, care shall be exercised not
to damage the factory PVC coating. Damaged PVC coating shall be repaired per the manufacturer's
written instructions. In lieu of PVC coated RGS, corrosion wrap tape shall be permitted to be used where
RGS is in contact with direct earth.
110-2.3 PLASTIC CONDUIT. Plastic conduit and fittings-shall conform to the following
requirements:
•
UL 514B covers W-C-1094-Conduit fittings all types, classes 1 thru 3 and 6 thru 10.
•
UL 514C covers W-C-1094- all types, Class 5 junction box and cover in plastic (PVC).
•
UL 651 covers W-C-1094-Rigid PVC Conduit, types I and II, Class 4.
•
UL 651A covers W-C-1094-Rigid PVC Conduit and high-density polyethylene (HDPE) Conduit
type III and Class 4.
Underwriters Laboratories Standards UL-651 and Article 352 of the current National Electrical Code shall
be one of the following, as shown on the plans:
a.
Type I–Schedule 40 and Schedule 80 PVC suitable for underground use either direct-buried or
encased in concrete.
b.
Type II–Schedule 40 PVC suitable for either above ground or underground use.
c.
Type III – Schedule 80 PVC suitable for either above ground or underground use either direct-
buried or encased in concrete.
d.
Type III –HDPE pipe, minimum standard dimensional ratio (SDR) 11, suitable for placement
with directional boring under pavement.
The type of solvent cement shall be as recommended by the conduit/fitting manufacturer.
110-2.4 SPLIT CONDUIT. Split conduit shall be pre-manufactured for the intended purpose and
shall be made of steel or plastic.
110-2.5 CONDUIT SPACERS. Conduit spacers shall be prefabricated interlocking units
manufactured for the intended purpose. They shall be of double wall construction made of high grade,
high density polyethylene complete with interlocking cap and base pads. They shall be designed to accept
No. 4 reinforcing bars installed vertically.
110-2.6 CONCRETE. Concrete shall be proportioned, placed, and cured per Item P-610, Concrete for
Miscellaneous Structures. Concrete shall be proportioned, placed, and cured per state department of
transportation structural concrete with minimum 25% Type F fly ash, and a minimum allowable
compressive strength of 4,000 psi (28 MPa).
110-2.7 PRECAST CONCRETE STRUCTURES. Precast concrete structures shall be furnished by
a plant meeting National Precast Concrete Association Plant Certification Program or another RPR
approved third party certification program. Precast concrete structures shall conform to ASTM C478.
110-2.8 FLOWABLE BACKFILL. Flowable material used to back fill conduit and duct bank
trenches shall conform to the requirements of item p-153, controlled low strength material.
110-2.9 DETECTABLE WARNING TAPE. Plastic, detectable, American Public Works Association
(APWA) red (electrical power lines, cables, conduit, and lighting cable), orange (telephone/fiber optic
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L-110-3
Airport Underground Electrical Duct
Banks and Conduits
cabling) with continuous legend magnetic tape shall be polyethylene film with a metallized foil core and
shall be 3-6 inches wide. Detectable tape is incidental to the respective bid item.
CONSTRUCTION METHODS
110-3.1 GENERAL. The Contractor shall install underground duct banks and conduits at the
approximate locations indicated on the plans. The RPR shall indicate specific locations as the work
progresses, if required to differ from the plans. Duct banks and conduits shall be of the size, material, and
type indicated on the plans or specifications. Where no size is indicated on the plans or in the
specifications, conduits shall be not less than 2 inches inside diameter or comply with the National
Electrical Code based on cable to be installed, whichever is larger. All duct bank and conduit lines shall be
laid so as to grade toward access points and duct or conduit ends for drainage. Unless shown otherwise on
the plans, grades shall be at least 3 inches per 100 feet. On runs where it is not practicable to maintain the
grade all one way, the duct bank and conduit lines shall be graded from the center in both directions
toward access points or conduit ends, with a drain into the storm drainage system. Pockets or traps where
moisture may accumulate shall be avoided. Under pavement, the top of the duct bank shall not be less
than 18 inches below the subgrade; in other locations, the top of the duct bank or underground conduit
shall be not less than 18 inches below finished grade.
The Contractor shall mandrel each individual conduit whether the conduit is direct-buried or part of a
duct bank. An iron-shod mandrel, not more than 1/4 inch smaller than the bore of the conduit shall be
pulled or pushed through each conduit. The mandrel shall have a leather or rubber gasket slightly larger
than the conduit hole.
The Contractor shall swab out all conduits/ducts and clean base can, manhole, pull boxes, etc., interiors
immediately prior to pulling cable. Once cleaned and swabbed the light bases, manholes, pull boxes, etc.,
and all accessible points of entry to the duct/conduit system shall be kept closed except when installing
cables. Cleaning of ducts, base cans, manholes, etc., is incidental to the pay item of the item being cleaned.
All raceway systems left open, after initial cleaning, for any reason shall be recleaned at the Contractor’s
expense. All accessible points shall be kept closed when not installing cable. The Contractor shall verify
existing ducts proposed for use in this project as clear and open. The Contractor shall notify the RPR of
any blockage in the existing ducts.
For pulling the permanent wiring, each individual conduit, whether the conduit is direct-buried or part of
a duct bank, shall be provided with a 200-pound test polypropylene pull rope. The ends shall be secured
and sufficient length shall be left in access points to prevent it from slipping back into the conduit. Where
spare conduits are installed, as indicated on the plans, the open ends shall be plugged with removable
tapered plugs, designed for this purpose.
All conduits shall be securely fastened in place during construction and shall be plugged to prevent
contaminants from entering the conduits. Any conduit section having a defective joint shall not be
installed. Ducts shall be supported and spaced apart using approved spacers at intervals not to exceed 5
feet.
Unless otherwise shown on the plans, concrete encased duct banks shall be used when crossing under
pavements expected to carry aircraft loads, such as runways, taxiways, taxi-lanes, ramps and aprons.
When under paved shoulders and other paved areas, conduit and duct banks shall be encased using
flowable fill for protection.
All conduits within concrete encasement of the duct banks shall terminate with female ends for ease in
current and future use. Install factory plugs in all unused ends. Do not cover the ends or plugs with
concrete.
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L-110-4
Airport Underground Electrical Duct
Banks and Conduits
Where turf is well established and the sod can be removed, it shall be carefully stripped and properly
stored.
Trenches for conduits and duct banks may be excavated manually or with mechanical trenching
equipment unless in pavement, in which case they shall be excavated with mechanical trenching
equipment. Walls of trenches shall be essentially vertical so that a minimum of shoulder surface is
disturbed. Blades of graders shall not be used to excavate the trench.
When rock is encountered, the rock shall be removed to a depth of at least 3 inches below the required
conduit or duct bank depth and it shall be replaced with bedding material of earth or sand containing no
mineral aggregate particles that would be retained on a 1/4-inch sieve. Flowable backfill may alternatively
be used.
Underground electrical warning (Caution) tape shall be installed in the trench above all underground duct
banks and conduits in unpaved areas. Contractor shall submit a sample of the proposed warning tape for
approval by the RPR. If not shown on the plans, the warning tape shall be located 6 inches above the
duct/conduit or the counterpoise wire if present.
Joints in plastic conduit shall be prepared per the manufacturer’s recommendations for the particular
type of conduit. Plastic conduit shall be prepared by application of a plastic cleaner and brushing a plastic
solvent on the outside of the conduit ends and on the inside of the couplings. The conduit fitting shall then
be slipped together with a quick one-quarter turn twist to set the joint tightly. Where more than one
conduit is placed in a single trench, or in duct banks, joints in the conduit shall be staggered a minimum
of 2 feet.
Changes in direction of runs exceeding 10 degrees, either vertical or horizontal, shall be accomplished
using manufactured sweep bends.
Whether or not specifically indicated on the drawings, where the soil encountered at established duct
bank grade is an unsuitable material, as determined by the RPR, the unsuitable material shall be removed
per Item P-152 and replaced with suitable material. Additional duct bank supports shall be installed, as
approved by the RPR.
All excavation shall be unclassified and shall be considered incidental to Item L-110. Dewatering
necessary for duct installation, and erosion per federal, state, and local requirements is incidental to Item
L-110.
Unless otherwise specified, excavated materials that are deemed by the RPR to be unsuitable for use in
backfill or embankments shall be removed and disposed of offsite.
Any excess excavation shall be filled with suitable material approved by the RPR and compacted per Item
P-152.
It is the Contractor’s responsibility to locate existing utilities within the work area prior to excavation.
Where existing active cables cross proposed installations, the Contractor shall ensure that these cables are
adequately protected. Where crossings are unavoidable, no splices will be allowed in the existing cables,
except as specified on the plans. Installation of new cable where such crossings must occur shall proceed
as follows:
a. Existing cables shall be located manually. Unearthed cables shall be inspected to assure absolutely
no damage has occurred
b. Trenching, etc., in cable areas shall then proceed with approval of the RPR, with care taken to
minimize possible damage or disruption of existing cable, including careful backfilling in area of
cable.
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L-110-5
Airport Underground Electrical Duct
Banks and Conduits
In the event that any previously identified cable is damaged during the course of construction, the
Contractor shall be responsible for the complete repair.
110-3.2 DUCT BANKS. Unless otherwise shown in the plans, duct banks shall be installed so that the
top of the concrete envelope is not less than 18 inches below the bottom of the base or stabilized base
course layers where installed under runways, taxiways, aprons, or other paved areas, and not less than 18
inches below finished grade where installed in unpaved areas.
Unless otherwise shown on the plans, duct banks under paved areas shall extend at least 3 feet beyond the
edges of the pavement or 3 feet beyond any under drains that may be installed alongside the paved area.
Trenches for duct banks shall be opened the complete length before concrete is placed so that if any
obstructions are encountered, provisions can be made to avoid them. Unless otherwise shown on the
plans, all duct banks shall be placed on a layer of concrete not less than 3 inches thick prior to its initial
set. The Contractor shall space the conduits not less than 3 inches apart (measured from outside wall to
outside wall). All such multiple conduits shall be placed using conduit spacers applicable to the type of
conduit. As the conduit laying progresses, concrete shall be placed around and on top of the conduits not
less than 3 inches thick unless otherwise shown on the plans. All conduits shall terminate with female
ends for ease of access in current and future use. Install factory plugs in all unused ends. Do not cover the
ends or plugs with concrete.
Conduits forming the duct bank shall be installed using conduit spacers. No. 4 reinforcing bars shall be
driven vertically into the soil a minimum of 6 inches to anchor the assembly into the earth prior to placing
the concrete encasement. For this purpose, the spacers shall be fastened down with locking collars
attached to the vertical bars. Spacers shall be installed at 5-foot intervals. Spacers shall be in the proper
sizes and configurations to fit the conduits. Locking collars and spacers shall be submitted to the RPR for
review prior to use.
When specified, the Contractor shall reinforce the bottom side and top of encasements with steel
reinforcing mesh or fabric or other approved metal reinforcement. When directed, the Contractor shall
supply additional supports where the ground is soft and boggy, where ducts cross under roadways, or
where shown on the plans. Under such conditions, the complete duct structure shall be supported on
reinforced concrete footings, piers, or piles located at approximately 5-foot intervals.
All pavement surfaces that are to have ducts installed therein shall be neatly saw cut to form a vertical
face. All excavation shall be included in the contract with price for the duct.
Install a plastic, detectable, color as noted, 3 to 6 inches wide tape, 8 inches minimum below grade above
all underground conduit or duct lines not installed under pavement. Utilize the 3-inch wide tape only for
single conduit runs. Utilize the 6-inch wide tape for multiple conduits and duct banks. For duct banks
equal to or greater than 24 inches in width, utilize more than one tape for sufficient coverage and
identification of the duct bank as required.
When existing cables are to be placed in split duct, encased in concrete, the cable shall be carefully located
and exposed by hand tools. Prior to being placed in duct, the RPR shall be notified so that he may inspect
the cable and determine that it is in good condition. Where required, split duct shall be installed as shown
on the drawings or as required by the RPR.
110-3.3 CONDUITS WITHOUT CONCRETE ENCASEMENT. Trenches for single-conduit lines
shall be not less than 6 inches nor more than 12 inches wide. The trench for 2 or more conduits installed
at the same level shall be proportionately wider. Trench bottoms for conduits without concrete
encasement shall be made to conform accurately to grade so as to provide uniform support for the conduit
along its entire length.
Buckeye Municipal Airport
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April 2025
L-110-6
Airport Underground Electrical Duct
Banks and Conduits
Unless otherwise shown on the plans, a layer of fine earth material, at least 4 inches thick (loose
measurement) shall be placed in the bottom of the trench as bedding for the conduit. The bedding
material shall consist of soft dirt, sand or other fine fill, and it shall contain no particles that would be
retained on a 1/4-inch sieve. The bedding material shall be tamped until firm. Flowable backfill may
alternatively be used.
Unless otherwise shown on plans, conduits shall be installed so that the tops of all conduits within the
Airport’s secured area where trespassing is prohibited are at least 18 inches below the finished grade.
Conduits outside the Airport’s secured area shall be installed so that the tops of the conduits are at least
24 inches below the finished grade per National Electric Code (NEC), Table 300.5.
When two or more individual conduits intended to carry conductors of equivalent voltage insulation
rating are installed in the same trench without concrete encasement, they shall be spaced not less than 3
inches apart (measured from outside wall to outside wall) in a horizontal direction and not less than 6
inches apart in a vertical direction. Where two or more individual conduits intended to carry conductors
of differing voltage insulation rating are installed in the same trench without concrete encasement, they
shall be placed not less than 3 inches apart (measured from outside wall to outside wall) in a horizontal
direction and lot less than 6 inches apart in a vertical direction.
Trenches shall be opened the complete length between normal termination points before conduit is
installed so that if any unforeseen obstructions are encountered, proper provisions can be made to avoid
them.
Conduits shall be installed using conduit spacers. No. 4 reinforcing bars shall be driven vertically into the
soil a minimum of 6 inches to anchor the assembly into the earth while backfilling. For this purpose, the
spacers shall be fastened down with locking collars attached to the vertical bars. Spacers shall be installed
at 5-foot intervals. Spacers shall be in the proper sizes and configurations to fit the conduits. Locking
collars and spacers shall be submitted to the RPR for review prior to use.
110-3.4 MARKERS. The location of each end and of each change of direction of conduits and duct
banks shall be marked by a concrete slab marker 2 feet square and 4 - 6 inches thick extending
approximately one inch above the surface. The markers shall also be located directly above the ends of all
conduits or duct banks, except where they terminate in a junction/access structure or building. Each cable
or duct run from a line of lights and signs to the equipment vault must be marked at approximately every
200 feet along the cable or duct run, with an additional marker at each change of direction of cable or duct
run.
The Contractor shall impress the word “DUCT” or “CONDUIT” on each marker slab. Impression of letters
shall be done in a manner, approved by the RPR, for a neat, professional appearance. All letters and words
must be neatly stenciled. After placement, all markers shall be given one coat of high-visibility orange
paint, as approved by the RPR. The Contractor shall also impress on the slab the number and size of
conduits beneath the marker along with all other necessary information as determined by the RPR. The
letters shall be 4 inches high and 3 inches wide with width of stroke 1/2 inch and ¼-inch deep or as large
as the available space permits. Furnishing and installation of duct markers is incidental to the respective
duct pay item.
110-3.5 BACKFILLING FOR CONDUITS. For conduits, 8 inches of sand, soft earth, or other fine
fill (loose measurement) shall be placed around the conduits ducts and carefully tamped around and over
them with hand tampers. The remaining trench shall then be backfilled and compacted per Item P-152
except that material used for back fill shall be select material not larger than 4 inches in diameter.
Flowable backfill may alternatively be used.
Trenches shall not contain pools of water during back filling operations.
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L-110-7
Airport Underground Electrical Duct
Banks and Conduits
The trench shall be completely backfilled and tamped level with the adjacent surface; except that, where
sod is to be placed over the trench, the backfilling shall be stopped at a depth equal to the thickness of the
sod to be used, with proper allowance for settlement.
Any excess excavated material shall be removed and disposed of per instructions issued by the RPR.
110-3.6 BACKFILLING FOR DUCT BANKS. After the concrete has cured, the remaining trench
shall be backfilled and compacted per Item P-152 “Excavation and Embankment” except that the material
used for backfill shall be select material not larger than 4 inches in diameter. In addition to the
requirements of Item P-152, where duct banks are installed under pavement, one moisture/density test
per lift shall be made for each 250 linear feet of duct bank or one work period’s construction, whichever is
less.
Flowable backfill may alternatively be used.
Trenches shall not contain pools of water during backfilling operations.
The trench shall be completely backfilled and tamped level with the adjacent surface; except that, where
sod is to be placed over the trench, the backfilling shall be stopped at a depth equal to the thickness of the
sod to be used, with proper allowance for settlement.
Any excess excavated material shall be removed and disposed of per instructions issued by the RPR.
110-3.7 RESTORATION. Where sod has been removed, it shall be replaced as soon as possible after
the backfilling is completed. All areas disturbed by the work shall be restored to its original condition. The
restoration shall include sodding, top-soiling, fertilizing, liming, seeding, or mulching as shown on the
plans. The Contractor shall be held responsible for maintaining all disturbed surfaces and replacements
until final acceptance. All restoration shall be considered incidental to the respective L-110 pay item.
Following restoration of all trenching near airport movement surfaces, the Contractor shall thoroughly
visually inspect the area for foreign object debris (FOD) and remove any such FOD that is found. This
FOD inspection and removal shall be considered incidental to the pay item of which it is a component
part.
110-3.8 OWNERSHIP OF REMOVED CABLE. Removed cable may become property of the
Contractor and recycled or disposed of off-site, in accordance with local ordinances (as specified in L-
100).
METHOD OF MEASUREMENT
110-4.1 MEASUREMENT. Underground conduits and duct banks shall be measured by the linear feet
of conduits and duct banks installed, including encasement, counterpoise conductor, ground rods and
connections, locator tape, trenching and backfill with designated material and for drain lines, the
termination at the drainage structure, all measured in place, completed, and accepted. Separate
measurement shall be made for the various types and sizes.
BASIS OF PAYMENT
110-5.1 PAYMENT. Payment will be made at the contract unit price per linear foot for each type and
size of conduit and duct bank completed and accepted, including trench and backfill with the designated
material, for drain lines and the termination at the drainage structure. This price shall be full
compensation for furnishing all materials and for all preparation, assembly, and installation of these
materials, and for all labor, equipment, tools, and incidentals necessary to complete this item per the
provisions and intent of the plans and specifications.
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L-110-8
Airport Underground Electrical Duct
Banks and Conduits
Payment will be made under:
Item L-110-5.1
Single-way, (1) - 2" Conduit, with Counterpoise Conductor /
Splices (Tie-ins at New Threshold Bases) – per Linear Foot
REFERENCES
The publications listed below form a part of this specification to the extent referenced. The publications
are referred to within the text by the basic designation only.
Advisory Circular (AC)
AC 150/5340-30
Design and Installation Details for Airport Visual Aids
AC 150/5345-53
Airport Lighting Equipment Certification Program
ASTM International (ASTM)
ASTM A615
Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete
Reinforcement
National Fire Protection Association (NFPA)
NFPA-70
National Electrical Code (NEC)
Underwriters Laboratories (UL)
UL Standard 6
Electrical Rigid Metal Conduit - Steel
UL Standard 514B
Conduit, Tubing, and Cable Fittings
UL Standard 514C
Nonmetallic Outlet Boxes, Flush-Device Boxes, and Covers
UL Standard 1242
Electrical Intermediate Metal Conduit Steel
UL Standard 651
Schedule 40, 80, Type EB and A Rigid PVC Conduit and Fittings
UL Standard 651A
Type EB and A Rigid PVC Conduit and HDPE Conduit
END OF ITEM L-110
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L-125-1
Installation of Airport Lighting Systems
ITEM L-125 INSTALLATION OF AIRPORT LIGHTING SYSTEMS
DESCRIPTION
125-1.1 This item shall consist of airport lighting systems furnished and installed in accordance with
this specification, the referenced specifications, and the applicable advisory circulars (ACs). The systems
shall be installed at the locations and in accordance with the dimensions, design, and details shown in the
plans. This item shall include the furnishing of all equipment, materials, services, and incidentals
necessary to place the systems in operation as completed units to the satisfaction of the RPR.
EQUIPMENT AND MATERIALS
125-2.1 GENERAL.
a.
Airport lighting equipment and materials covered by Federal Aviation Administration (FAA)
specifications shall be certified under the Airport Lighting Equipment Certification Program
in accordance with AC 150/5345-53, current version. FAA certified airfield lighting shall be
compatible with each other to perform in compliance with FAA criteria and the intended
operation. If the Contractor provides equipment that does not performs as intended because
of incompatibility with the system, the Contractor assumes all costs to correct the system for
to operate properly.
b.
Manufacturer's certifications shall not relieve the Contractor of their responsibility to provide
materials in accordance with these specifications and acceptable to the RPR. Materials
supplied and/or installed that do not comply with these specifications shall be removed, when
directed by the RPR and replaced with materials, which do comply with these specifications,
at the sole cost of the Contractor.
c.
All materials and equipment used shall be submitted to the RPR for approval prior to
ordering the equipment. Submittals consisting of marked catalog sheets or shop drawings
shall be provided. Clearly mark each copy to identify pertinent products or models applicable
to this project. Indicate all optional equipment and delete non-pertinent data. Submittals for
components of electrical equipment and systems shall identify the equipment for which they
apply on each submittal sheet. Markings shall be clearly made with arrows or circles
(highlighting is not acceptable). The Contractor shall be responsible for delays in the project
accruing directly or indirectly from late submissions or resubmissions of submittals.
d.
The data submitted shall be sufficient, in the opinion of the RPR, to determine compliance
with the plans and specifications. The Contractor's submittals shall be submitted in electronic
PDF format, tabbed by specification section. The RPR reserves the right to reject any or all
equipment, materials, or procedures, which, in the RPR’s opinion, does not meet the system
design and the standards and codes, specified herein.
e.
All equipment and materials furnished and installed under this section shall be guaranteed
against defects in materials and workmanship for a period of at least twelve (12) months from
final acceptance by the Owner. The defective materials and/or equipment shall be repaired or
replaced, at the Owner's discretion, with no additional cost to the Owner.
f.
All LED light fixtures, with the exception of obstruction lighting (AC 150/5345-43) must be
warranted by the manufacturer for a minimum of 4 years after date of installation inclusive of
all electronics.” Obstruction lighting warranty is set by the individual manufacturer.
Buckeye Municipal Airport
Runway ’17-35’ Non-Precision Approaches
Dibble Project No. 1023034.04
CR Engineers
April 2025
L-125-2
Installation of Airport Lighting Systems
EQUIPMENT AND MATERIALS
125-2.2 CONDUIT/DUCT. Conduit shall conform to Specification Item L-110 Airport Underground
Electrical Duct Banks and Conduits.
125-2.3 CABLE AND COUNTERPOISE. Cable and Counterpoise shall conform to Item L-108
Underground Power Cable for Airports.
125-2.4 TAPE. Rubber and plastic electrical tapes shall be Scotch Electrical Tape Numbers 23 and 88
respectively, as manufactured by 3M Company or an approved equal.
125-2.5 CABLE CONNECTIONS. Cable Connections shall conform to Item L-108 Installation of
Underground Cable for Airports.
125-2.6 RETROREFLECTIVE MARKERS. Retroreflective markers shall be type L-853 and shall
conform to the requirements of AC 150/5345-39.
125-2.7 RUNWAY AND TAXIWAY LIGHTS. Runway and taxiway lights shall conform to the
requirements of AC 150/5345-46. Lamps shall be of size and type indicated, or as required by fixture
manufacturer for each lighting fixture required under this contract. Filters shall be of colors conforming
to the specification for the light concerned or to the standard referenced.
LIGHTS
Type
Class
Mode
Style
Option
Base
Filter
Transformer
Notes
L-861E
2
1
N/A
4 –
(Mounting
Hardware)
L-867
1.5”
threaded
hubs
Red /
Green
30/45W
30W
Quartz
Halogen
14”
Height
125-2.8 RUNWAY AND TAXIWAY SIGNS. Not Required. Runway and Taxiway Guidance Signs
should conform to the requirements of AC 150/5345-44.
125-2.9 RUNWAY END IDENTIFIER LIGHT (REIL). Not Required
125-2.10 PRECISION APPROACH PATH INDICATOR (PAPI). Not Required
125-2.11 CIRCUIT SELECTOR CABINET. Not Required
125-2.12 LIGHT BASE AND TRANSFORMER HOUSINGS. Light Base and Transformer
Housings should conform to the requirements of AC 150/5345-42. Light bases shall be Type L-867, Class
1A, Size B shall be provided as indicated or as required to accommodate the fixture or device installed
thereon. Base plates, cover plates, and adapter plates shall be provided to accommodate various sizes of
fixtures.
125-2.13 ISOLATION TRANSFORMERS. Isolation Transformers shall be Type L-830, size as
required for each installation. Transformer shall conform to AC 150/5345-47.
INSTALLATION
125-3.1 INSTALLATION. The Contractor shall furnish, install, connect, and test all equipment,
accessories, conduit, cables, wires, buses, grounds and support items necessary to ensure a complete and
operable airport lighting system as specified here and shown in the plans.
Buckeye Municipal Airport
Runway ’17-35’ Non-Precision Approaches
Dibble Project No. 1023034.04
CR Engineers
April 2025
L-125-3
Installation of Airport Lighting Systems
The equipment installation and mounting shall comply with the requirements of the National Electrical
Code and state and local code agencies having jurisdiction.
The Contractor shall install the specified equipment in accordance with the applicable advisory circulars
and the details shown on the plans.
125-3.2 TESTING. All lights shall be fully tested by continuous operation for not less than 24 hours
as a completed system prior to acceptance. The test shall include operating the constant current regulator
in each step not less than 10 times at the beginning and end of the 24-hour test. The fixtures shall
illuminate properly during each portion of the test.
125-3.3 SHIPPING AND STORAGE. Equipment shall be shipped in suitable packing material to
prevent damage during shipping. Store and maintain equipment and materials in areas protected from
weather and physical damage. Any equipment and materials, in the opinion of the RPR, damaged during
construction or storage shall be replaced by the Contractor at no additional cost to the owner. Painted or
galvanized surfaces that are damaged shall be repaired in accordance with the manufacturer’s
recommendations.
125-3.4 ELEVATED AND IN-PAVEMENT LIGHTS. Water, debris, and other foreign substances
shall be removed prior to installing fixture base and light.
A jig or holding device shall be used when installing each light fixture to ensure positioning to the proper
elevation, alignment, level control, and azimuth control. Light fixtures shall be oriented with the light
beams parallel to the runway or taxiway centerline and facing in the required direction. The outermost
edge of fixture shall be level with the surrounding pavement. Surplus sealant or flexible embedding
material shall be removed. The holding device shall remain in place until sealant has reached its initial
set.
METHOD OF MEASUREMENT
125-4.1 Runway threshold lights will be measured by the number of each type installed as completed
units in place, ready for operation, and accepted by the RPR.
BASIS OF PAYMENT
125-5.1 Payment will be made at the Contract unit price for each complete runway or taxiway light,
guidance sign or reflective marker installed by the Contractor and accepted by the RPR. This payment will
be full compensation for furnishing all materials and for all preparation, assembly, and installation of
these materials, and for all labor, equipment, tools, and incidentals necessary to complete this item.
Payment will be made under:
Item L-125-5.1
New Elevated L-861E (Incandescent Quartz) Runway End / Threshold
Light (Bi-Directional R/G) and Isolation Transformer on New L-867
Base Can - Retrofit in Existing Asphalt Blast Pad Pavement - Per Each
REFERENCES
The publications listed below form a part of this specification to the extent referenced. The publications
are referred to within the text by the basic designation only.
Advisory Circulars (AC)
AC 150/5340-18
Standards for Airport Sign Systems
AC 150/5340-26
Maintenance of Airport Visual Aid Facilities
AC 150/5340-30
Design and Installation Details for Airport Visual Aids
Buckeye Municipal Airport
Runway ’17-35’ Non-Precision Approaches
Dibble Project No. 1023034.04
CR Engineers
April 2025
L-125-4
Installation of Airport Lighting Systems
AC 150/5345-5
Circuit Selector Switch
AC 150/5345-7
Specification for L-824 Underground Electrical Cable for Airport
Lighting Circuits
AC 150/5345-26
Specification for L-823 Plug and Receptacle, Cable Connectors
AC 150/5345-28
Precision Approach Path Indicator (PAPI) Systems
AC 150/5345-39
Specification for L-853, Runway and Taxiway Retroreflective Markers
AC 150/5345-42
Specification for Airport Light Bases, Transformer Housings, Junction
Boxes, and Accessories
AC 150/5345-44
Specification for Runway and Taxiway Signs
AC 150/5345-46
Specification for Runway and Taxiway Light Fixtures
AC 150/5345-47
Specification for Series to Series Isolation Transformers for Airport
Lighting Systems
AC 150/5345-51
Specification for Discharge-Type Flashing Light Equipment
AC 150/5345-53
Airport Lighting Equipment Certification Program
Engineering Brief (EB)
EB No. 67
Light Sources Other than Incandescent and Xenon for Airport and
Obstruction Lighting Fixtures
END OF ITEM L-125