SPECIFICATIONS.pdf

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DEPARTMENT OF TRANSPORTATION

FEDERAL AVIATION ADMINISTRATION

SOUTHWEST REGION

FORT WORTH, TX

JCN: 601243

May 01, 2017

SPECIFICATION FOR CONSTRUCTION OF PRECISION APPROACH PATH INDICATOR SYSTEMS (PAPI) FOR

RUNWAY 24 AT SHREVEPORT REGIONAL AIRPORT, SHREVEPORT, LA

- INTRODUCTION -

The Following specifications and advisement’s constitute the working portion of the contract between the contractor and the Federal Aviation Administration, an Agency of the United States Government. The Contracting Officer (CO) assigned to this contract shall be the only individual with authority to speak for and contractually bind the FAA. All communications, authorizations, approvals, changes, modifications, etc., involving this contract shall be through the Contracting Officer. Any action not approved by the Contracting Officer shall not bind the FAA.

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TABLE OF CONTENTS

DIVISION TITLE

1 GENERAL REQUIREMENTS

SECTION 1A – SPECIAL CONDITIONS

SECTION 1B – SAFETY ON AIRPORTS

2 SITE WORK

SECTION 2A – EARTHWORK AND SITE IMPROVEMENT

SECTION 2B – CRUSHED AGGREGATE ROAD AND SITE SURFACING

SECTION 2C – ASPHALT CONCRETE PAVEMENT

SECTION 2D – TOPSOIL AND GRASS COVER

SECTION 2E – MISCELLANEOUS SITE IMPROVEMENTS

SECTION 2F – CONCRETE PAVEMENT

3 CONCRETE

SECTION 3A – CONCRETE FORMWORK AND REINFORCEMENT

SECTION 3B – CAST-IN-PLACE CONCRETE

4 NOT REQUIRED

5 METALS

SECTION 5A – MISCELLANEOUS METALS

6 WOOD AND PLASTIC

SECTION 6A – ROUGH CARPENTRY

7 NOT REQUIRED

8 NOT REQUIRED

9 NOT REQUIRED

10 NOT REQUIRED

11 NOT REQUIRED

12 NOT REQUIRED

13 SPECIAL CONSTRUCTION

SECTION 13C –PAPI SYSTEMS

14 NOT REQUIRED

15 NOT REQUIRED

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16 ELECTRICAL

SECTION 16A – BASIC METHODS AND MATERIALS

SECTION 16B – 600-VOLT POWER CABLE FOR UNDERGROUND INSTALLATION

SECTION 16C – 600-VOLT ARMORED POWER CABLE

SECTION 16D – CONTROL CABLE

SECTION 16E – CABLE INSTALLATION

SECTION 16F – ELECTRICAL INSTALLATION TESTING

SECTION 16G – LIGHTNING PROTECTION

APPENDIX TITLE

APPENDIX A: A/C 150/5370-2F, OPERATIONAL SAFETY ON AIRPORTS DURING CONSTRUCTION

APPENDIX B: FAA-C-1391d, INSTALLATION, TERMINATION, SPLICING, AND TRANSIENT/SURGE

PROTECTOIN OF UNDERGROUND ELECTRICAL DISTRIBUTION SYSTEM POWER CABLES.

APPENDIX C: FAA-STD-019e, LIGHTNING AND SURGE PROTECTION, GROUNDING, BONDING AND

SHIELDING REQUIREMENTS FOR FACILITIES AND ELECTRONIC EQUIPMENT.

APPENDIX D: GOVERNMENT FURNISH MATERIAL (GFM).

APPENDIX E: TRDR FORMS.

APPENDIX F: CONTRACTOR COMPLETION CERTIFICATE.

APPENDIX G: ELECTRICAL WORK, INTERIOR.

APPENDIX H: Elimination of FAA-STD-019e Requirement on External Bonding Jumper Conductor for All

Flexible Metallic Conduits.

APPENDIX I: HDPE SPECIFICATIONS.

APPENDIX J: SWEPCO Electric Service Handbook.

1A-1

DIVISION 1 – GENERAL REQUIREMENTS

SECTION A1

SPECIAL CONDITIONS

1A.1 SCOPE

a. This specification covers general requirements for construction of Precision Approach Path

Indicator (PAPI) Systems at Shreveport Regional Airport, Shreveport, LA, on Runways 24. In general, all parts of this Specification covering construction required on project drawings and in other Contract documents are applicable to this Contract.

b. The Contractor shall furnish all plant, labor, materials (except Government-furnished property), equipment, energy, transportation, and other services necessary to construct all elements of the systems required in Specifications, Drawings, and other Contract documents. Construction shall include all miscellaneous and incidental work necessary for a complete and operational system, whether or not such work is specifically shown or specified.

c. The work shall be between 8:00 AM and 5:00 PM (Monday-Friday, 40 Hours/week). The project duration is 45 calendar days. Contractor shall perform all demolition, excavation, trenching, and concrete form work in the runway 24 RSA in 14 consecutive days. This includes the demo of the

VASI, installation of underground conduit, and construction of the PAPI LHA foundations. The rest of the work in the RSA (i.e. assembly of the equipment, cabling, etc.) can be completed at night or during the day in a manner where our FAA Resident Engineer maintains radio contact with Air Traffic and has the contractor move outside the RSA upon the approach of an aircraft.

All safety measures have to be taken according to FAA directives.

d. The contractor must coordinate issuing the IDs and the movement area training with the airport manager one month in advance of the NTP date.

e. Contractor shall maintain the insurance levels required by the Airport for working within the

Airport for the duration of the project.

f. construction shall include:

1. Trenching and backfilling for Utility Easement for Runway 24 PAPI.

2. Trenching, HDPE Boring and Conduit installation for power feeds for the PAPI system.

3. Construction of reinforced concrete foundations for PAPI Lamp Housing Assemblies

(LHA) and equipment rack for the PAPI system.

4. Construction of an earth electrode system around PAPI LHAs and equipment rack for the

PAPI system.

5. Installation of PAPI LHAs on reinforced concrete foundations for each respective PAPI system.

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6. Installation of power and control conductors for PAPI Power and Control Assembly (PCA) to PAPI LHAs in PVC conduit for the PAPI system. All power and control cables shall be tested for continuity and insulation integrity per Section 16F of these specifications after installation and in the presence of the RE.

7. Construction of the PAPI Power and Control Assembly racks for the PAPI system outside the Runway Safety Area per drawings.

8. Construction of Utility Meter/Transformer Racks for Runways 24 PAPI/REIL Systems as shown in sheet the drawings.

9. Construction of Asphalt road, maintenance area, and parking area for PAPI and the power rack site as shown in sheet SHV-D-PAPI24-C005, and specifications.

10. Construction of maintenance walkway for LHAs and equipment rack for the PAPI system per drawings and specifications.

11. Demonstration by contractor that the PAPI will operate normally at the time of conducting the CAI.

12. Aiming of the PAPI LHAs per the Technical Instruction Manual furnished with the equipment and labeling angles should be provided by the contractor and installed on the four LHA’s, the aiming angles shown in the contract drawings.

13. Demolition of the existing VASI equipment, rack, and foundations. Disconnect cables and abandon buried conduits and cables in place. Re-grade, compact, and seed the disturbed area to match existing surroundings area. Dispose the VASI via R2 Recycler.

14. Restore and seed any turf areas disturbed by construction.

15. Participation by Contractor in Contractor’s Acceptance Inspection (CAI) and addresses any punch items found to be unsatisfactory or contrary to the contract drawings and specifications.

16. Participation by contractor in Flight Check, to be conducted and scheduled by FAA.

17. Participation by Contractor in Joint Acceptance Inspection (JAI). FAA will conduct JAI with SSC personnel. Contractor shall address any items found to be unsatisfactory or contrary to the contract drawings.

18. Deliver metallic PAPI LHA aiming angle labels to local FAA after flight check. Angles shall be consistent with those provided by the flight check.

19. Connect Runway 24 PAPI power to the existing transformer per sheet drawings and specifications, update panel schedule and provide and install metallic identification labels.

20. Connect Runway 24 REIL power as shown in the drawings and according to the specifications.

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21. Coordinate all requests with the FAA Resident Engineer and the airport manager for the shutdown of the navigation and landing equipment which will be affected by the construction. This request must be no later than 30 days prior to construction and must be accompanied by a complete construction schedule and according to the direction of the FAA resident engineer.

g. All work inside the RSA shall be completed during an airport approved and coordinated runway shutdown. The contractor shall coordinate the use of temporary Runway Closure X’s and barricades with FAA resident engineer and the airport operations. All associated costs shall be paid for by the contractor at no additional cost to the FAA. Temporary Runway Closure X’s and barricades shall be constructed in accordance with AC 150/5300-2F.

1A.2 GOVERNMENT FURNISHED MATERIAL (GFM). Government furnished material for this contract is listed on the Government Furnished material list and is the sole contract document which validly identifies Government Furnished Material under this Contract.

1A.3 CONTRACTOR FURNISHED MATERIAL. The Contractor shall furnish all material under this contract per Paragraph 1A.1b, except GFM identified on the Government Furnished Material

List. The instruction “by other” on the drawings means equipment that is provided by a third party. Contractor will not be required to provide work or material shown as “by others”. The contractor shall be aware the certain materials to be furnished by the Contractor, may be long-lead-time items. Therefore, the successful bidder should determine the availability of all material immediately after Contract award, and initiate procurement action on long-lead items at the earliest possible date.

1A.4 SUBMITTALS AND BRAND NAME USAGE.

a. Introduction. Each product required for use in the Contract Drawings and Specifications must meet the actual minimum needs of the Government as demonstrated in the salient characteristics for that product. If a brand name product is used in the Drawings or

Specifications, it should be regarded as a “known acceptable source” (i.e., a product that meets the actual minimum needs, and demonstrated the appropriate salient characteristics). The product used can be identical or equal to the brand name product or known acceptable source in meeting the salient characteristics, but it need not exceed the actual minimum requirements.

Any brand name product or known acceptable source mentioned will, however, not be required for use in order to comply with the Specifications or Drawing unless those documents make it clear that the brand name product is required, and substitution is prohibited. The following submittal procedure shall be followed in order to:

1. Insure adherence to functional and quality standards in substitution of Contractor furnished material.

2. Provide manufacturers catalog sheets for all material to be furnished and installed by the Contractor.

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b. Definition. A submittal is a collection of information required by Specifications, or by the

Contracting Officer, presenting detailed information on:

1. Material or equipment items the Contractor proposes to use.

2. Methods or plans of action which the Contractor intends to employ in specific situations.

c. Requirements. All products that a Contractor wishes to use must be approved before use by the

Project Engineer or the Contracting Officer’s Representative. To gain approval, the Contractor must submit documents and/or samples that demonstrate the product clearly meets the

Government’s minimum needs, and demonstrates appropriate salient characteristics. All submittals must be in writing. The Contracting Officer shall have the right to require submittals from the Contractor where the Contractor makes an unsolicited change proposal. The information presented in a submittal shall be sufficient to demonstrate that all Specification requirements for the subject material, equipment, methods, or plans, are met by the

Contractor’s proposal. The informational materials may include documents such as shop drawings, sketched, calculations, data sheets, written plans of action, manufacturers’ catalog cuts, brochures, and/or specification sheets. If the Specification or Contracting Officer requires actual samples or material or equipment, the Contractor shall provide them.

d. Submittal Review. When submitting before the Notice to Proceed date, the Contractor shall send the submittal package(s) directly to the Contracting Officer. When submitting after the

Contract work has begun, the Contractor shall give submittal packages to the RE, who will forward them promptly to the Contracting Officer or Project Engineer. The Contracting Officer may personally evaluate the submittal, or request the Project Engineer to evaluate it.

In either case, the submittal will return directly from the Contracting Officer to the Contractor, with the Contracting Officer’s approval, approval with comments, or disapproval.

e. Submittal Time Frame. To provide adequate time for document transmission and submittal review, the FAA reserves the right to take two weeks to complete a review, transmission date to transmission date. Terminal navigational aid contracts are brief contracts. The review process can therefore span a substantial portion of the contract period. For this reason:

1. The Contractor is urged to initiate submittal as soon as feasible after contract award, and to expedite document transmission.

2. The Project Engineer and other reviewers (if any) will expedite reviews and document transmission insofar as feasible.

Maximum use of fast document transmission modes (e.g. email, fax, etc.) is encouraged.

f. Procurement Before Approval. The Contractor is advised not to procure any item for which submittal approval is required but not yet granted. If approval is denied, the Contractor will be prevented from installing the disapproved item(s). The Contractor must transmit a new submittal package for the new items replacing the disapproved items installed before submittal

1A-5 approval is granted. The FAA reserves the right to discontinue field work on any item furnished without submittal approval.

1A.5 QUALITY CONTROL.

a. General. The contractor shall furnish all material and labor needed for testing procedures. As per these specifications, the Contractor is to perform all testing and pay for testing, including any re-testing. The Contractor’s testing laboratory shall be approved by the RE, complying with the provisions of this section. All testing shall be performed in accordance with recognized test procedures as listed in the various sections of the specifications, Standards of the State

Department of Highways and Public Transportation, American Society of Testing Materials

(ASTM) and other testing associations. Perform test in accordance with published procedures for testing issued by these organizations.

b. Testing Laboratory. The Contractor’s testing laboratory must be a recognized organization, capable of performing a full range of testing procedures as determined by the Standards or testing procedures specified. The Contractor shall submit the names of proposed company along with documentation of qualifications, a list of tests that can be performed, a list of recent projects for which testing has been performed along with a list of references from those projects. The testing organization shall comply with the following:

1. ACIL (American Council for Independent Laboratories) “Recommended Requirements for Independent Laboratory Qualifications”

2. American National Standards Institute (ANSI) publication: ANSI/ASTM E-329 “Standard

Recommended Practice for Inspection and Testing for Concrete, Steel, and Bituminous

Materials used in Construction”.

c. JOB CONDITIONS.

1. The RE reserves the right to perform testing at any state of construction. The

Contractor shall make the site available to the Government’s testing organization, and shall cooperate fully in the performance of these tests. Where the RE has made known that certain testing is to be performed, the Contractor shall give the FAA adequate notice before proceeding with work that would interfere with testing.

2. The Contractor is responsible to notify the RE at such times that testing is required. Do not proceed with any work until testing services have been performed and the RE approves results of the tests.

3. The Government reserves the right to have 30 days after testing samples have been made prior to rendering a decision on such tests.

4. The FAA reserves the right to direct re-testing in the event of failure and any re-tests shall be at the Contractor’s expense.

d. TEST REPORTS.

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1. The Testing Laboratory shall prepare reports for all tests and shall send two (2) copies to the RE and two (2) copies to the Contractor.

2. The Test Report shall contain the following information:

• Name of the laboratory

• Description of the test performed

• Date samples were taken

• Date tests were performed

• Weather conditions and temperature at time of test

• Location in the site or structure that test was taken

• Standard or test procedure used in making the test

• A description of the results of the test

• A statement “TEST RESULTS ACCEPTABLE” or “TEST RESULTS NOT ACCEPTABLE”

• Interpretations of test results, if appropriate

1A.6 PRE-CONSTRUCTION CONFERENCE. The Contractor shall attend a pre-construction conference when required by the Contracting Officer or Airport management. The Contractor shall abide by all agreements reached at the conference regarding safety practices, ingress and egress routes to the site, maintenance of airport security (locking gates, etc.), deference to air traffic, and other operational procedures.

1A.7 COORDINATION. All coordination between the Contractor and the airport management and local FAA personnel, shall be accomplished through the RE.

1A.8 TEMPORARY FACILITIES.

a. TEMPORARY SANITARY FACILITIES. The Contractor shall provide and pay the costs of portable sanitary facilities at the job site from the commencement of the project to its conclusion, as required by OSHA. Contractor’s workmen shall use these sanitary facilities at all times.

Restrooms within existing or FAA occupied buildings shall not be used.

b. TEMPORARY UTILITIES. The Contractor shall provide all temporary utilities needed by all trades during construction, including electrical power and water. Make arrangements with the local utility company, comply with the utility company’s requirements and pay for all utility costs.

c. TEMPORARY LIGHTING. At any time that work will be performed outside at night, the

Contractor shall provide portable flood lights adequate for the purpose intended. Lighting shall provide sufficient light to make the site safe during night time use.

d. TEMPORARY STORAGE FACILITY. The Contractor will be responsible for providing and paying for temporary storage facilities.

1A.9 COMPLIANCE WITH LOCAL AND OTHER CODES. The Contractor shall comply with standards

(e.g., National Electric Code) adopted by the Contract documents, and with local and other codes. Where the requirements of the Specifications and Drawings exceed those of the adopted

1A-7 and local codes, the Contractor shall comply with the requirements of the Specifications and

Drawings.

1B-1

DIVISION 1 – GENERAL REQUIREMENTS

SECTION 1B

SAFETY ON AIRPORTS

1B.1 DEFINITIONS.

a. Classified area. For classified areas such as the Runway Safety Area (RSA), Object Free Area

(OFA), or any other critical areas refer to the plans. Classified areas are specific for every site.

1B.2 GENERAL PRECAUTIONS. The Contractor shall abide by all requirements as specified herein, in the Contract clauses, on the construction safety plan, and as established by airport authorities in the pre-construction conference. The Contractor shall be responsible for thoroughly explaining all safety and security precautions required on the airport to all work personnel, both under his direct employment and under his subcontractors.

1B.3 CONSTRUCTION WITHIN CLASSIFIED AREAS.

a. Restrictions.

1. Construction within or access through classified areas will not be permitted whenever runways or taxiways defining the classified areas are being used for aircraft operations.

2. If runways and taxiways within classified area are required to remain open, construction within the classified areas will be interrupted as necessary to permit normal aircraft operations.

b. Time Frame. All construction within classified areas shall be completed within the shortest possible time. Construction shall be performed continuously during normal working hours, except as otherwise specified, until all work within the classified areas is completed.

1B.4 CONSTRUCTION WITHIN UNCLASSIFED AREAS. Construction will be permitted within unclassified areas while aircraft are using adjacent runways and taxiways, except as specified elsewhere or established during the pre-construction conference.

1B.5 MAINTENANCE OF AIRCRAFT OPERATING SURFACES. Soil, debris, or loose materials dropped or tracked onto airport roads, runways, taxiways, and ramps shall be immediately swept up and removed. Likewise, all loose material at the job site or dropped enroute to the job site which can be blown onto the above aircraft surfaces, shall be immediately placed in a closed container to prevent damage to the aircraft.

1B.6 EQUIPMENT PARKING. All equipment not in use at the close of each day shall be parked in the staging area provided in the construction and safety plan or as directed by the RE.

1B.7 RADIO COMMUNICATIONS. At airports served by airport traffic control towers or airport owner/operator radio communication facilities, the Contractor shall furnish and operate two-way radio communications with these facilities when personnel, vehicles, and equipment are

1B-2 required to enter the aircraft operations area, to obtain proper clearance for construction hazards to aircraft, and at all other times established during the pre-construction conference.

1B.8 TEMPORARY PAVEMENT MARKING AND LIGHTING. These are requirements only for PART 139

Airports and/or when displacing a threshold.

a. Installation. If runway and/or taxiway closure or runway threshold relocation or displacement is required, the Contractor shall install temporary marking or temporary marking and lighting, as shown on the construction safety plan Drawing(s). All temporary marking shall be constructed of plywood, durable fabric, or other approved material, placed and secured so as to pose no threat of damage to aircraft, and which can be easily removed after construction completion.

b. Maintenance. It will be the Contractor’s responsibility to maintain the temporary marking and lighting in a condition acceptable to the RE and Airport management. If marking of lighting is damaged or becomes inoperative, the Contractor shall immediately repair the affected items.

c. Removal. Upon completion of the work that necessitated runway threshold displacement, or runway and/or taxiway closure, the Contractor shall remove all temporary marking and lighting, and shall return the runway and taxiway lighting configuration to the original condition.

1B.9 ADVISORY CIRCULAR. As a minimum, the Contractor shall adhere to all requirements of

Advisory Circular AC 150/5370-2F “Operational Safety on Airports During Construction” and the included referenced documents. This document is available at:

http://www.faa.gov/documentLibrary/media/Advisory_Circular/150_5370_2f.pdf

2A-1

DIVISION 2 – SITE WORK

SECTION 2A

EARTHWORK AND SITE IMPROVEMENTS

2A.1 DESCRIPTION OF WORK. The extent of earthwork is indicated on the drawings and by the provisions of this section.

2A.2 QUALITY ASSURANCE.

a. Codes and Standards. Perform all earthwork in compliance with applicable requirements of governing authorities having jurisdiction.

b. Testing and inspection. Soil materials, moisture content, and degree of compaction shall conform to ASTM specifications referenced herein. Professional soil testing methods associated with this specification shall be required.

2A.3 SAFETY REQUIREMENTS.

a. Refer to Section 1B for construction within classified and unclassified areas.

b. To protect life, property, and work, all earthwork operations shall be performed in compliance with local and OSHA requirements. The Contractor shall provide all sheeting, shoring, and other bracing as necessary.

c. All trenches in classified areas shall be excavated and backfilled during the same day, unless otherwise indicated.

2A.4 JOB CONDITIONS.

a. Existing Utilities.

1. Locate all underground cables, utility lines, and other underground construction before beginning excavation work. Any damage to such lines or construction belonging to the

FAA, utility companies, or others, shall be promptly repaired, at the Contractor’s expense, to the complete satisfaction of the owner

2. Project drawings generally indicate the location of cables maintained by the Federal

Aviation Administration only. The FAA will mark the approximate locations of its own cables one time and it is the Contractor’s responsibility to maintain these marks.

Provide a minimum of 48-hours notice to RE prior to digging so that the cables can be marked.

b. Weather Conditions.

1. Excavating and backfilling for foundations, trenches, and boring pits, shall not proceed when excessively wet or freezing conditions could adversely affect the load-bearing characteristics of the soil, or prevent proper compaction.

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2. When freezing weather is expected, excavations shall not be made to full depth unless concrete or conduits can be placed immediately. If an excavation is already at full depth, the excavation shall be protected from frost.

c. Drainage.

1. All excavations shall be continuously drained by natural means or pumping to prevent any decrease in soil bearing capacity or damage to poured foundations or to trenches.

2. Provide and maintain pumps, well points, sumps, suction and discharge lines, and other dewatering system components necessary to convey water away from excavations.

3. Establish and maintain temporary drainage ditches and other diversions outside excavations limits to convey rain water and water removed from excavations to collecting or run-off areas. Do not use trench excavations as temporary drainage ditches.

2A.5 MATERIALS.

a. Structure and Foundation Materials. In-place, undisturbed inorganic soils will be adequate to support all project structures, unless otherwise indicated. Highly organic soils (topsoil, peat and swamp location soils) shall be removed entirely from areas to be occupied by structures.

b. Backfill and Fill. Material shall be inorganic soil excavated from site, or borrow comprised of inorganic soil approved by the RE. All such soils shall be free of rock, gravel, and cohesive lumps greater than two inches in any direction, and debris, waste, vegetation, frozen material, and other deleterious materials.

c. Base course for Concrete Slabs. Material shall be a graded mixture of washed crushed stone or crushed or uncrushed gravel with 100% passing a 1 ½” sieve, and not more than 5% passing a number 4 sieve.

2A.6 SITE PREPARATION.

a. Clearing and Grubbing. The Contractor shall scalp areas where excavation or embankment will be made. Scalping shall include the removal of materials such as trees, brush, roots, sod, grass, residue of agricultural crops, sawdust, and decayed vegetable matter from the surface of the ground. These materials shall be removed from the site and disposed of off airport property, at no additional cost to the Government.

b. Topsoil Removal.

1. Topsoil shall be considered soil containing visible vegetable matter and black loam that will not compact with the usual compacting methods.

2. Unless otherwise specified, topsoil shall be removed from all areas to receive fill, granular surfacing, pavement, and structures, and from all areas where subsoil excavating is required, such as for roadway cuts and ditches. Dispose of excess topsoil on or off airport property, as directed by the RE, at no additional cost to the

Government.

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2A.7 EXCAVATION.

a. Excavation Classification. Excavation is unclassified and includes excavation to subgrade elevation indicated, regardless of character or materials and obstructions encountered excepting as qualified herein.

b. Rock Excavation. If rock is encountered above the design footing elevations of any facility structure, such foundation shall bear entirely on clean solid rock or on soil, but not on both. If the soil-and-rock bearing condition is encountered, the RE will determine which material shall support the structure. If rock surface is used, it shall be reasonably level or shall be stepped to make level segments.

c. Unauthorized Excavation. Removal of materials beyond design subgrade elevations or dimensions without specific direction from the RE constitutes unauthorized excavation.

Remedial work for such excess excavations shall be as directed by the RE at the Contractor’s expense.

d. Additional Excavation. When any excavation has reached required subgrade elevation, notify the RE, who will inspect soil conditions. If the RE determines that the soil possesses inadequate bearing capacity, carry such excavation deeper as directed by the RE.

e. Excavation for Structures.

1. Conform to elevations and dimensions shown within a tolerance of plus or minus 0.10 foot, and extending a sufficient distance from footings and foundations to permit placing and removal of concrete formwork, installation of services and other construction, and for inspection.

2. In excavating for footings and foundations, remove loose soil and compact bottom of hole prior to placing reinforcement and concrete.

f. Excavation for Cable and Conduit Trenches.

1. Direct-Earth Buried Cable Trenches. Unless otherwise indicated on the drawings, Direct-

Earth Buried cable trenches shall be excavated so that cables will be installed a minimum of 30” below finished grade, on top of a 3” layer of compacted sand bedding.

The trench width shall provide adequate separation per Section 16E.d. Bottom of trenches shall be smooth and free of stones and sharp objects. Cable trenches shall be in straight lines between cable markers and bends in trenches shall have a radius of not less than 36”. Slope trenches to same elevations as conduits where cables will be routed to a building interior.

2. Duct Trenches. Unless otherwise indicated on the drawings, duct trenches shall be excavated to the following requirements:

i. Concrete Encased ducts shall be excavated so that the top of the concrete envelope shall not be less than 30” below finished grade, or 4’ below the

2A-4 bottom of paving under taxiways or runways. All conduits shall be raised a minimum of 3” off the bottom of the trench using spacers.

ii. Ducts without concrete encasement shall be excavated so that the top of conduit shall not be less than 30” below finished grade, or 4’ below the bottom of paving under taxiways or runways. Remove any rock or stone that would be retained on a ½-inch sieve. Conduits shall be installed on a 3” layer of compacted sand bedding.

iii. Where conduits are installed under railroads or state-owned highways, conduits shall be installed in accordance with the requirements of that authority.

iv. Trench widths shall be wide enough to receive work to be installed and provide

3” of concrete or sand coverage, whichever is required.

v. Trenches shall be sloped 2” per 100’ towards handholes.

2A.8 COMPACTION.

a. General.

1. All compaction shall be accomplished by using power-operated mechanical equipment except for limited use of manual tampers in constricted areas. Operate all power equipment as herein specified to achieve the minimum degree of compaction subject to acceptance by testing.

2. Cohesive soils are defined herein as those containing less than 60 percent sand, gravel, or stone. Percentages greater than 60 percent are herein termed non-cohesive soils.

b. Cohesive Soil Compaction.

1. Use sheepsfoot roller of such minimum weight that at least 200 psi will be transmitted to surface area of studs or feet. Operate at speeds not exceeding 4 mph on each layer of fill until roller walks itself to top of grade.

2. Use motor-operated soil tamper (stomper) in confined areas, including trenches, on each layer of fill until no further visible consolidation is evident.

3. Use a heavy blunt tamping rod on each layer of fill in the most constricted locations where power equipment cannot be used.

c. Non-cohesive Soils.

1. Use pneumatic tire roller fully loaded wand weighing not less than 275 pounds per inch of tire tread width. Operate at speeds not exceeding 4 mph. A minimum of ten passes of the roller is required on each layer of fill.

2. Use motor operated vibratory tamper in confined areas, including trenched, on each layer of fill until no further visible consolidation is evident.

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3. Use heavy blunt tamping rods on each layer in constricted locations where power equipment cannot be used.

d. Moisture Control.

1. Where soil material must be moisture-conditioned before compaction, uniformly apply water to a layer of soil material in such quantity that free water will not appear on the surface during or subsequent to compaction operations.

2. Scarify and air-dry soil material that is too wet to permit compaction to specified density.

e. Percentage of Maximum Density Requirements.

1. General Requirements. The required densities for cohesive and non-cohesive soils are determined by testing procedures defined by ASTM Standards D 1557 and D 4253/4254, respectively. To assure compliance, the Contractor shall arrange for professional soil testing services, at no additional cost to the Government.

2. Structures, Slabs, and Access Roads/Parking Areas. Compact top surfaces of subgrade and each layer of backfill or fill material to 90% of maximum density for cohesive soils, or to 95% relative density for non-cohesive material.

3. Turf and Non-Vehicular Surfaced Areas. Compact top surface of subgrade and each layer of backfill or fill material to 90% of maximum density for cohesive soils, or to 90% relative density for non-cohesive material.

4. Concrete Slab Base Course. Compact with vibratory tamper until no further visible consolidation is evident.

2A.9 BACKFILL AND FILL.

a. Structure Foundations. Backfill or fill as promptly as work permits, but not until completion of the following:

1. Acceptance of construction below grade.

2. Recording locations of underground conduit.

3. Removal of concrete formwork, bracing, trash, and debris.

b. Ground Surface Preparation. Remove vegetation, debris, topsoil, and unsatisfactory subsoil from ground surface, and compact the subgrade, prior to placement of fill layers.

c. Placement and Compaction.

1. Place acceptable backfill and fill materials in layers not more than 8 inches in loose depth for material to be compacted by heavy equipment, and not more than four inches in loose depth material to be compacted by hand-operated tampers.

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2. Before compaction, moisten or aerate each layer as necessary to provide optimum moisture content. Do not place backfill or fill on water, ice, snow, frozen soil, or excessively wet soil.

d. Cable Trench Backfill.

1. For ducts not encased in concrete, place a 3-inch layer of sand bedding material in the trench. The bedding material shall be tamped until firm. Install conduits or cables on this layer. A 3” layer of sand bedding shall then be placed on the sides and top of the duct. This layer shall not be mechanically compacted.

2. Subsequent layers of backfill over concrete envelopes or sand bedding shall be clean soil containing no rock particles larger than two-inches in their largest dimension.

3. If a trench crosses an existing paved surface, the surface shall be replaced with materials of the same composition, thickness, and degree of compaction as the adjacent surface structure. Replacement concrete shall have a 28-day compressive strength of 3,000psi.

Finished grade of the pavement shall be flush with the adjacent paved surfaces.

4. If a trench crosses an existing crushed rock aggregate surface, the surface shall be replaced with materials of the same composition, thickness, and degree of compaction as the adjacent surface structure. Finished grade of the aggregate shall be flush with the adjacent surfaces.

5. Where sod has been removed, it shall be replaced as soon as possible after the backfilling is completed. Restoration shall include any necessary grading, fertilization, liming, seeding, sodding, sprigging, or mulching as required to restore the disturbed area to match the adjacent area. The Contractor shall be held responsible for maintaining all disturbed and restored surfaces until final acceptance.

e. Backfill and Fill Surface Elevations. Finished grade, shown on the drawings, is the top surface of turf and crushed rock or crushed stone surfaced areas. Therefore, make allowances for 6 inches of topsoil and depths as detailed or specified for surfaced areas when establishing top surface of fill of backfill.

2A.10 GRADING.

a. General. Uniformly grade areas within limits of grading, including adjacent transition area.

Smooth the finished surfaces within specified tolerances, and compact with uniform slopes between points where elevations are indicated, or between such points and existing grades.

b. Grading Outside Building Lines. Grade areas adjacent to building lines to drain away from structures and to prevent ponding. Finish areas to receive topsoil and surfacing within 0.10 feet above or below required subgrade elevations.

c. Grading Surface of Fill Under Building Slabs. Grade smooth and level and to proper elevation to within a tolerance of ½-inch when tested with a 10-foot straightedge.

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2A.11 MAINTENANCE.

a. Protection of Graded Areas. Protect newly graded areas from traffic and erosion. Keep free of trash and debris.

b. Reconditioning. Where compacted areas are disturbed by construction operations, adverse weather, or where any settlement has occurred, scarify surface, add acceptable fill, reshape, grade, and compact as necessary.

2A.12 DISPOSAL OF EXCESS AND WASTE MATERIALS. Remove and dispose of all excess soil and waste material from the project site and adjacent lands. All costs associated with disposal shall be at the Contractor’s expense.

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DIVISION 2 – SITEWORK

SECTION 2B

CRUSHED AGGREGATE SITE SURFACING

2B.1 DESCRIPTION OF WORK. The extent of work is indicated on the drawings and by the provisions of this section.

2B.2 STATE INSPECTIONS. State highway construction specifications, latest edition, form a part of this Specification and are applicable for all work unless otherwise specified. This referenced specification will be hereinafter referred to as “State Specifications”. Disregard all references in the State Specifications to layout of work by others, and to measurements and payments. All layout work will be accomplished by the Contractor, and payment for all work under this section will be part of the lump-sum contract.

2B.2 MATERIALS.

a. Geotextile.

1. Application. The most common application of geotextiles in FAA NAVAIDS construction is as a separator. In this application, the geotextile is placed over prepared roadway subgrade soil, and crushed aggregate is placed and compacted on top of the geotextile.

The geotextile permits water to permeate into the subgrade while preventing the aggregate from mixing with the subgrade soil. The geotextile specified below is for application as a separator.

2. Separator Geotextile Selection Criteria. The geotextile fibers, and the threads used in joining the geotextile by sewing, shall consist of long chain polymeric fibers composed of polypropylene, polyester, polyolefins, or polyamide. Both the geotextile and threads shall be resistant to chemical attack, mildew, and rot. The geotextile shall conform to the physical property requirements listed in the following table. All values shall represent certifiable minimum values in the weakest principle direction of the fabric.

PROPERTY TEST METHOD REQUIREMENT

Grab Tensile Strength ASTM D-4632 315 lbs

Grab Tensile Elongation ASTM D-4632 15%

Trapezoid Tear Strength ASTM D-4533 113 lbs

CBR Puncture Strength ASTM D-6241 900 lbs

Apparent Opening Size (AOS) ASTM D-4751 U.S. Sieve #40, max

Permittivity ASTM D-4491 0.05 secˉ¹

Flow Rate ASTM D-4491 4 gpm/ft²

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UV Resistance ASTM D-4355 70% Strength Retained

Mirafi 600x manufactured by Royal Ten Cate Corporation is one of the products which meets these specification. For any substitution, provide the Contracting Officer with complete product literature, including values of the properties tabulated above, and a sample of fabric. Do not procure any substitute before receiving the Contracting

Officer’s approval. See Paragraph 1A.4 above.

3. Geotextile Fabric Width. Fabric Width shall be atleast 12 feet for the normal 12-foot-wide access road. Fabric in other vehicular areas shall be cut to fit, and overlapped per

Paragraph 2B.4(c)(2)(ii), below, to fully cover such areas.

b. Crushed Aggregate Surfacing.

1. Crushed rock or stone aggregate shall comply with State Specification quality requirements for crushed rock or crush stone used for road surface course, and shall be of the State gradation most closely conforming with the following gradation:

SIEVE SIZE TOTAL PASSING %

1-INCH 100

¾-INCH 80-100

3/8-INCH 30-60

No. 4 48-65

No. 8 35-50

No. 30 19-30

No. 50 13-23

No. 100 7-15

No. 200 0-8

2. A certified sieve analysis, referenced to State Specification gradation, shall be submitted to the RE for approval.

2B.4 CONSTRUCTION.

a. General Requirements. All earthwork requirements in section 2A for areas to receive surfacing are applicable, excepting as qualified herein. Where the additional work or more stringent requirements in this section conflict with Section 2A, requirements herein shall prevail.

b. Foundation Preparation.

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1. Foundation Material. All topsoil shall be removed from areas to receive paving and surfacing or fill under such surfaces. Only inorganic soil shall exist under surfaced or paved areas.

2. Compaction. Compact as required in Section 2A.

3. Grading. Shape with motor grader to achieve such surface trueness that when tested with a 10-foot straightedge, no deviation greater than ½-inch shall exist.

4. Corrective Work. Any ruts or soft-yielding spots that may appear in the subgrade, any areas having inadequate compaction, and deviations of the surface from the requirements specified shall be corrected by loosening, removing, and adding approved material and reshaping and re-compacting the affected areas to line and grade, and to the specified density.

c. Geotextile Fabric.

1. General. Geotextile fabric, if required on the drawings, shall be installed on prepared subgrade for all areas that will experience vehicular traffic or pedestrian traffic.

2. Construction Requirements.

i. Prepared subgrade and foundation shall be compacted smooth and level as specified elsewhere and as shown on the drawings.

ii. The fabric shall be rolled out directly upon the prepared surface, and shall not be dragged over any surface. Fabric in place shall have a smooth surface and shall be free of folds, wrinkles, cuts, or other imperfections. Individual panels of fabric shall be overlapped at least 24 inches, with the preceding layer overlapping the following layer in the direction that surfacing material will be spread. No vehicular traffic will be permitted directly upon the fabric.

d. Crushed Aggregate Surfaced Areas and Crushed Aggregate Base Course for Bituminous

Pavement.

1. Spreading. Crushed aggregate surfaced areas and base course shall be constructed in one or more layers of maximum 6-inch compacted thickness each. Crushed aggregate shall be deposited directly and uniformly on the prepared subgrade, if no geotextile fabric is used. If geotextile fabric is required, the aggregate shall be back-dumped on the fabric, and machine spread in the direction of overlap. Dumping in windrows, which requires excessive re-handling, will not be permitted. When deposited, the aggregate shall be free from segregation, and shall require minimum blading or manipulation.

2. Compaction and Grading.

i. Each layer of aggregate shall be compacted using equipment required in the

State Specifications. For compacting aggregate on a geotextile fabric, use a smooth-drum roller. Compaction shall closely follow the spreading operation to prevent loss of contained moisture or displacement of materials.

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ii. When surface stability of the crushed aggregate cannot be obtained due to lack of fines, additional fines shall be added to the upper portion of the course in an amount sufficient to secure stability, at no additional cost to the Government.

In no case, however, shall the quantity of fines added increase the percent passing the Number 200 sieve by more than 15 percent in the upper portion.

iii. Any irregularities or depressions that develop in the layers under rolling operations shall be corrected by loosening the material and removing or adding aggregate and re-rolling. The rolling shall be continued until the surface is shown to be smooth and uniform, and to such trueness that when tested with a

10-foot straightedge it shall not show any deviation in excess of ½-inch. At all places not accessible to the roller, the aggregate of each layer shall be tamped separately and compacted to grade and line with mechanical tampers.

iv. If any subgrade material is worked into the aggregate material during the compacting or finishing operations, all granular material within the affected areas shall be removed and replaced with new aggregate. The RE may restrict hauling or traffic over the completed or partially completed base after inclement weather or at any time when the subgrade is soft, and there is a tendency for the subgrade material to work into the base material.

v. If considered necessary by the RE, water shall be applied to each layer to aid in compaction and prevent segregation of the material. Disc or harrow surfacing material during moistening operations to secure uniform moisture distribution.

Add water in a manner that will not soften the subgrade. All work associated with the additional water shall be accomplished at no additional cost to the

Government.

vi. The aggregate shall be compacted to 95% maximum density as determined by

AASHTO-T99. If testing confirms unacceptable compaction, reconstruction or other remedial work may be required by the Contractor at no additional cost to the Government.

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SECTION 2C

ASPHALT CONCRETE PAVEMENT

2C.1 DESCRIPTION OF WORK. The extent of asphalt concrete pavement construction is indicated on the drawings and by the provisions of this section. Pavement construction will include placing prime and tack coats and asphalt concrete base surface courses on prepared subgrade and aggregate base course.

2C.2 CERTIFICATION. Provide certification signed by material producer and Contractor that all materials and mix composition comply with the specified requirements.

2C.3 APPLICABLE SPECIFICATIONS.

a. American Association of State Highway and Transportation Officials (AASHTO) material referenced herein

b. State Highway Construction Specifications.

1. State Highway construction specification, latest edition, form a part of this specification and are applicable for all work, unless otherwise specified. This referenced specification will hereinafter be referred to as “State Specifications.”

2. Disregard all references in the State Specifications to layout of work by others, and to measurements and payments. All layout work will be accomplished by the contractor, and payment for all work under this section will be a part of the lump-sum contract.

3. Prime and tack coats, as specified herein, are a requirement under this contract even if such coats are not required under the State Specifications

2C.4 WEATHER LIMITATIONS.

a. Surface Conditions. Apply all coats and asphalt layer to dry surfaces only. Do not commence work when wet weather threatens.

b. Temperatures.

1. Apply prime and tack coats when air temperature is above 50°F and when temperature has not been below 35°F for 12 hours immediately prior to application.

2. Construct asphalt concrete base and surface course when air temperatures are above

30°F and rising, and above 40°F, respectively.

2C.5 MATERIALS.

a. General Requirements. Provide locally available materials that comply with the State

Specifications for asphalt concrete pavements and all requirements herein.

b. Base (Binder) and Surface Course Aggregates. Provide sound angular crushed rock or crushed stone, sand, and stone screenings.

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c. Asphalt Cement. AASHTO M 226 (ASTM D 3381) for viscosity-graded material and AASHTO M 20

(ASTM D 946) for penetration-graded material.

d. Prime Coat. Cut-back asphalt type; AASHTO M 82 (ASTM D 2027) MC-30, MC-70, or MC-250.

e. Tack Coat. Emulsified asphalt; AASHTO M 140 (ASTM D 977) or MC-208 (D 2397); SS-1, SS-1h, CSS-1 or CSS-1h, diluted with one part water to one part emulsified asphalt.

2C.6 ASPHALT-AGGREGATE MIXTURE. Provide plant-mixed, hot-laid asphalt-aggregate mixture complying with ASTM D 3515 and the State Specifications.

2C.7 CONSTRUCTION.

a. Surface Preparation.

1. Prepare subgrade and provide road stabilization/ reinforcement fabric and aggregate base course as required in Sections 2A and 2B herein.

2. Inspect aggregate base for unstable areas and areas requiring additional compaction before proceeding with pavement work and correct all unsatisfactory conditions.

b. Prime Coat. Apply at a rate of 0.20 to 0.50 gallons per square yard, over compacted aggregate base course. Apply material to penetrate and seal, but not flood, surface. Cure and dry as long as necessary to attain penetration and evaporation of volatile.

c. Tack Coat. Apply to surface of asphalt concrete base (binder) course and abutting surfaces of existing pavement, at the rate of 0.05 to 0.15 gallons per square yard of surface. Allow to dry before placing surface coat.

d. Placement of Mix.

1. General. Place asphalt concrete mixture on prepared surface, spread, and strike off.

Spread mixture at a minimum temperature of 225oF (107oC). Place inaccessible and small areas by hand. Place each course to required grade, cross-section, and compacted thickness.

2. Course Thickness. Unless indicated otherwise on the drawings, asphalt concrete base and surface courses shall be 3 inches and 1 1/2 inches thick, respectively.

3. Paver Placing. Place in strips not less than 10 feet wide, unless otherwise acceptable to the RE. After the first strip has been placed and rolled, place succeeding strips, and extend rolling to overlap previous strips. Complete base course for a section before placing surface course.

4. Joints. Make joints between old and new pavements, or between successive days'…