Install Access Road to Rwy 10 GS... Specifcation.doc

DEPARTMENT OF TRANSPORTATION

FEDERAL AVIATION ADMINISTRATION

GREAT LAKES REGION

DES PLAINES, ILLINOIS

SPECIFICATION NO. 808316

DATED: April 8, 2015

SPECIFICATION TO INSTALL AN

ACCESS ROAD FROM TAXIWAY A

TO THE RUNWAY 10 GLIDE SLOPE SITE

AT WAUKESHA COUNTY AIRPORT,

IN WAUKESHA,WISCONSIN

Division

Title

GENERAL REQUIREMENTS

Section 1A - Summary of The Work

Section 1B - Work Schedule

Section 1C – Submittals

2 SITEWORK

Section 2A – Earthwork and Site

Improvements Section 2B – Aluminized Steel Type 2 Corrugated Steel Pipe

Section 2C – Crushed Aggregate Road and Site Surfacing Section 2D – Asphalt Concrete

Pavement Section 2E - Demolition 3 thru 16

NOT USED

808316

April 8, 2015

DIVISION 1 GENERAL REQUIREMENTS

SECTION 1A

SUMMARY OF THE WORK

1A.1 GENERAL: The work described hereunder consists of furnishing all necessary materials, labor, equipment, tools, and supervision to install an access road from Taxiway A to the Runway 10 Glide Slope site at

Waukesha County Airport, in Waukesha, Wisconsin.

1A.2 SCOPE OF WORK: The work consists of but is not limited to the following:

A. Remove topsoil and provide an excavated surfaced for the installation of a culvert.

B. Furnish and install a culvert underneath and across the new access road from Taxiway A to the Runway 10 Glide Slope site.

C. Furnish and install an asphalt access road from Taxiway A to the Runway 10 Glide Slope site.

D.

Demolish a portion of the existing access road connected to Runway 10 and restore with grass.

E. Refurbish construction damaged grass areas to their pre-construction condition.

1A.3 COORDINATION: All coordination between the Contractor and the FAA shall be through the project Contracting Officer’s Representative (COR).

1A.4 TEMPORARY FACILITIES: The Contractor shall furnish all temporary facilities as required such as electricity, water, and air.

1A.5 SANITARY FACILITIES: Sanitary facilities are not available at the site. The Contractor shall provide temporary toilet facilities as required for his workmen. Temporary toilet facilities shall be of the type approved by the local governing body. The location shall be as directed by the COR.

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1A.6 MATERIALS: The Contractor shall furnish all materials, equipment, and labor to complete the job, unless otherwise specified.

1A.7 MATERIAL STORAGE: The Contractor shall store all materials in a manner to protect them from all elements of the weather and other incidental damage.

Materials shall be stored as directed by the COR.

1A.8 INGRESS AND EGRESS TO WORK AREAS: Ingress and egress to the work areas shall be as directed by the COR.

Security passes will be required of all workmen.

Information on how to obtain these passes will be available at the pre-construction conference.

The Contractor shall keep all vehicles, working equipment and materials where directed by the COR.

1A.9 CLEANING:

A.

Working Area: The Contractor shall keep the working area in a clean and proper condition.

All rubbish and waste resulting from the execution of the work shall be removed at the end of each day or stored as directed by the

COR.

B.

Waste Packing Material: Immediately after unpacking, all packing material, case lumber, excelsior, or other rubbish, flammable or otherwise, shall be removed from the premises.

C.

Final Clean-Up: Upon completion of work, and before final inspection, the Contractor shall remove his working tools, equipment, debris, rubbish, and unused materials from the site.

D. Disposal: Disposal of rubbish, and debris will be off the site at Contractor's expense or as directed by the COR.

808316 1A.10 SUBMISSION OF WASTE MANAGEMENT PLAN: The Contractor shall submit a waste management plan in accordance with the FAA’s Construction Waste Management Contract Clause.

1A.11 CONTRACTOR’S LIABILITY: Damage to existing facilities and equipment caused by the Contractor shall be reported to the COR without delay. The

Contractor will be responsible for repairing, or having repaired, all damaged areas or equipment at the Contractor’s expense. All repairs shall be accomplished to the satisfaction of the COR. The Contractor shall keep all his working personnel within the work area or in approved access routes.

1A.12 SITE VISIT: The Contractor shall visit the work site prior to bidding the job to verify all dimensions and quantities of materials as specified and to obtain first-hand knowledge of existing conditions. Contractors can contact the

System Service Center at 414-489-2201 to arrange for a site visit. No subsequent extras will be allowed due to any claim of lack of knowledge for conditions which can be determined by examining the site. Once the Contractor is chosen to do the job, additional claims for materials, equipment, and labor for represented scope of work areas will not be allowed, unless the FAA has a need for additional work to be accomplished.

1A.13 PRE-CONSTRUCTION CONFERENCE: The Contractor shall attend a pre-construction conference prior to starting work at a location agreed upon between the Contractor and the Contracting Officer.

1A.14 WORKMANSHIP: All work shall be accomplished by experienced workers in accordance with the highest standards of the various work trades involved.

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1A.15 RESTRICTED USE OF ASBESTOS CONTAINING MATERIAL (ACM):

A.

Requirements: Contractor shall not use any asbestos containing material (ACM) at any time during the construction process. Contractor shall verify that all material, including that from third party suppliers, are asbestos free materials. The Contractor shall provide a written letter of certification to the FAA, stating that the project is asbestos free.

The Contractor shall provide to the Contracting

Officer (CO) a signed statement stating that, to the best of his/her knowledge, no asbestos containing building materials were used during the construction, renovation, and/or modernization of this facility.

If the FAA suspects the presence of ACM’s, the FAA will sample the suspect material to verify that no

ACM’s were utilized. The testing shall be performed at the expense of the FAA. If ACM’s are subsequently found during the sampling of the building materials, the Contractor shall remove and replace the product or material at his/her expense. In addition, the Contractor shall incur the costs of the original testing and/or any re-testing that may be necessary.

The Contractor shall submit to the CO prior to construction, Safety Data Sheets (SDS), for all materials and/or products to be utilized on the project. During the course of the project, both the COR and the Contractor shall routinely check products utilized on-site to ensure only products which have a submitted SDS are used. Copies of all SDS shall be turned over to the FAA office for their records.

If the Contractor does not submit the required information described above, the FAA shall have a complete survey performed by a qualified testing firm prior to acceptance. The cost of the survey and any subsequent removal/replacement of any ACM’s shall be deducted from the Contractor’s payment.

808316

SECTION 1B

WORK SCHEDULE

1B.1 WORK SCHEDULE: Working hours will be eight-hour days, Monday through Friday, with a start time agreed upon at the pre-construction conference. The Contractor shall submit a work schedule for approval prior to beginning work. The Contractor shall keep the

COR advised daily of any change.

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SECTION 1C

SUBMITTALS

1C.1 SUBMITTALS AND BRAND NAME USAGE

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". The use of the term “known acceptable source” and “brand name or equal” in referencing a specific product or manufacturer is not intended to indicate a preference for the products mentioned, but indicates the quality and characteristics of products that will meet the Government requirements. Should the Contractor decide to use a product other than that identified as a “known acceptable source” or “brand name or equal”, the

Contractor shall provide a submittal for this product. This does not relieve the Contractor from providing submittals for products or materials required in other sections of this

Specification.

A brand name product or known acceptable source mentioned is not required for use unless the drawings and Specifications make it clear that the brand name product is required, and substitution is prohibited.

Requirements: Each product that a Contractor wishes to use that is not a known acceptable source, must be approved before use, by the

Contracting Officer or his/her designee. To gain approval, the Contractor must submit documents and/or samples that will demonstrate the product clearly will meet the Government's minimum needs, and demonstrates appropriate salient characteristics. All submittals must be in writing. 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.

808316 The Contractor shall submit for approval samples of each material to be used, including each component manufacturer’s literature and applicable MSDS. Deviations from contract drawings and specifications shall be submitted in writing to the Contracting Officer for approval by the Project Engineer. The Contractor, as part of the bid, shall submit to the Contracting Officer a company "Site Health and Safety Plan" for review and approval.

Submittal Review: Contractor shall send the submittal package(s) directly to the Contracting

Officer. The submittal will return directly from the Contracting Officer to the Contractor, with the Contracting Officer's approval, approval with comments, or disapproval.

D.

Submittal Approval Time Frame: To provide adequate time for document review, the FAA reserves the right to take the necessary time to complete a review. It should be anticipated that the review period may be one week, although every effort will be made to expedite this process.

E.

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 not be paid for the disapproved item(s). The

Contractor must transmit a new submittal package for the new items replacing the disapproved items, and must procure only approved items. The

Contractor shall take responsibility for any items purchased, fabricated, or delivered before submittal approval is granted.

DIVISION 2 - SITEWORK

SECTION 2A

GENERAL

2A.1 DESCRIPTION OF WORK. The extent of earthwork is indicated on the drawings and by the provisions of this section. Requirements for access road and site surfacing and paving are covered in Sections 2C and 2D.

2A.2

QUALITY ASSURANCE.

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

Testing and Inspection.

1.

Soil materials and degree of compaction shall conform to ASTM specifications referenced herein. Professional soil testing methods associated with this specification will generally not be required, but the FAA reserves the right to engage a state-licensed soil testing service to resolve disputes regarding adequacy of all earthwork performed.

2.

Visual inspection and qualitative testing shall be performed by the Contractor in the presence of, and wherever directed by, the COR.

2A.3

SAFETY REQUIREMENTS.

Refer to the Construction safety Plan for construction within classified and unclassified areas.

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

All trenches in classified areas, excavated in one day, shall be backfilled during the same day. An effort shall be made to backfill other excavations in classified areas, during the same day.

808316

2A.4

JOB CONDITIONS.

Existing Utilities.

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 Contractor's expense, to the complete satisfaction of the owner.

Project drawings generally indicate locations of cables maintained by the Federal Aviation Administration only. The FAA will field establish approximate locations of its own cables.

2A.5

SITE PREPARATION.

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 agriculture 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.

Topsoil Removal.

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

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 COR, at no additional cost to the FAA.

2A.6

COMPACTION.

General.

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.

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.

Cohesive Soil Compaction.

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.

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.

Non-Cohesive Soil Compaction.

Use pneumatic tire roller fully loaded and 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.

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

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

Moisture Control.

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.

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

808316

Percentage of Maximum Density Requirements.

General Requirements. The required densities for cohesive and non-cohesive soils are determined by quantitative testing procedures defined by ASTM Standards D 1557 and

D 4253/4254, respectively. To assure compliance, the Contractor may arrange for such professional soil testing services, at no additional cost to the Government. The FAA, at its expense, may also make such arrangements if qualitative testing procedures appear inadequate.

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.

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

F.

Qualitative Testing and Inspection Procedures.

General. The Contractor shall perform qualitative soil compaction testing and inspection procedures for each type of backfill or fill material used wherever directed by, and in the presence of, the COR. Special attention shall be given to the backfilling of structures and trenches.

Qualitative Testing.

a.

Qualitative soil testing will consist of comparing the resistance to penetration of undisturbed soil to that of compacted backfill of the same composition. For borrow material the penetration comparison shall be made between maximum test sample density and in-place fill density.

b.

A soil penetration device (penetrometer) indicating depth and force exerted shall be utilized. Compaction will be adequate if backfill or fill possesses at least 95% of the resistance to penetration of undisturbed soil or test sample, respectively.

c.

Borrow test sample shall be a four inch deep (compacted measurement) layer of soil, aerated or moistened as directed by the COR, and compacted by power equipment until no further consolidation occurs, as approved by the COR.

2A.7

BACKFILL AND FILL.

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

Placement and Compaction.

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

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.

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 six inches of topsoil and depths as detailed or specified for surfaced areas when establishing top surface of fill or backfill.

2A.8

GRADING.

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.

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.

Grading Surface of Fill Under Building Slabs. Grade smooth and level and to proper elevation to within a tolerance of 1/2 inch when tested with a 10-foot straightedge.

808316 2A.9

MAINTENANCE.

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

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.10 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 Contractor's expense.

DIVISION 2 - SITEWORK

SECTION 2B

ALUMINZED STEEL TYPE 2 CORRUGATED STEEL PIPE

2B.1 DESCRIPTION OF WORK. The extent of corrugated steel pipe is indicated on the drawings and by the provisions of this section. Requirements for access road and site surfacing and paving are covered in Sections 2B and 2C.

2B.2

MATERIALS.

A. The coils from which the pipe is fabricated shall be hot dip coated in a bath of commercially pure aluminum referred to as Type 2. Aluminum-coated sheet for this product is identified as CSP grade and is produced in coating weight, designated 1.00 oz./sqft.

B. The material shall meet the requirements of AASHTO M-274.

2B.3

FABRICATION.

A.

Pipe shall be furnished circular in 14 gage material. Pipe fabricated under this specification shall conform to the dimensions and tolerances of the applicable sections of AASHTO M-36.

B.

The pipe shall be fabricated with helical corrugations and a continuous welded seam or lock seam extending from end to end of each length of pipe.

C. Pipe corrugations shall be 2 2/3” x 1/2" per

AASHTO M36 Type 1.

D. Each pipe end shall be fabricated with a minimum of two annular corrugations for purpose of joining pipe sections with coupling bands.

E. The pipe fittings shall be designed and supplied by the manufacturer in accordance with ASTM A 998 standards.

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2B.4

COUPLINGS BANDS.

A.

Pipe shall be joined together with coupling bands made from the same metal used for the pipe. Pipe coupling bands shall conform to the applicable sections of AASHTO M-36.

B. The bands shall be no thinner than 0.052 inch nominal sheet thickness.

C.

Coupling bands shall not be less than 12” wide.

Coupling bands shall be drawn together by two 1/2” diameter galvanized bolts through the use of a bar and strap connector suitably attached to the band.

E.

All joints shall include a neoprene gasket, minimum of 7” wide.

SECTION 2C

CRUSHED AGGREGATE ROAD AND SITE SURFACING

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

2C.2 STATE SPECIFICATIONS. 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 a part of the lump-sum contract.

2C.3

MATERIALS.

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.

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

Tensile Strength

ASTM

D-4595 2460 lbs/ft

Tensile Strength

ASTM

480 lbs/ft

(at 2% strain)

Tensile Strength (5%)ASTM

1212 lbs/ft

Tensile Strength (10%)ASTMD-4595 2340 lbs/ft

Factory Seam Strength ASTMD-4632 1250 lbs/ft

Flow Rate

ASTMD-4491 50 gpm/ ft2

Permeability

ASTMD-4491 .04 cm/sec Permittivity

ASTMD-4491 .70 sec-1

Apparent Opening Size ASTMD-4751 U.S. Sieve #30, max

UV Resistance

ASTMD-4355 80% str.

retained

Mirafi HP270 manufactured by Royal Ten Cate Corporation is one of the products which meets these Specifications. 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 1C.1 above.

Geotextile Fabric Width. Fabric width shall be at least 15 feet for the normal 13-foot-wide access road. Fabric in other vehicular areas shall be cut to fit, and overlapped per Paragraph 2C.4C.2.b, below, to fully cover such areas.

808316

Crushed Aggregate Surfacing.

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

Sieve Size

Total Passing, Percent

1-inch

3/4-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

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

2C.4

CONSTRUCTION.

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.

Foundation Preparation.

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.

Compaction. Compact as required in Section 2A.

Grading. Shape with motor grader to achieve such surface trueness that when tested with a 10-foot straightedge, no deviation greater than 1/2-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 recompacting the affected areas to line and grade, and to the specified density.

Geotextile Fabric.

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

Construction Requirements.

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

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.

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

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 or landscape 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 rehandling, will not be permitted. When deposited, the aggregate shall be free from segregation, and shall require minimum blading or manipulation.

Compaction and Grading.

a. Each layer of aggregate shall be compacted using equipment required in the State Specifications. For compacting aggregate on a geotextile or landscape fabric, use a smooth-drum roller. Compaction shall closely follow the spreading operation to prevent loss of contained moisture or displacement of materials.

c.

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 rerolling. 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 1/4-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.

d.

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 COR 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.

e.

If considered necessary by the COR, 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.

808316 f.

The aggregate shall be compacted to 95 percent maximum density as determined by AASHTO-T99. Compaction shall continue until no further discernible compaction is evidenced under action of the compaction equipment. If in the opinion of the COR, the required degree of compaction has not been achieved, testing in accordance with the standard will be conducted and paid for by the Government. If testing confirms unacceptable compaction, reconstruction or other remedial work may be required by the Contractor at no additional cost to the Government

SECTION 2D

ASPHALT CONCRETE PAVEMENT

2D.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 and surface courses on prepared subgrade and aggregate base course.

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

2D.3

APPLICABLE SPECIFICATIONS.

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

State Highway Construction Specifications.

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 hereinafter be 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 a part of the lump-sum contract.

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

2D.4

WEATHER LIMITATIONS.

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

Temperatures.

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

Construct asphalt concrete base and surface courses when air temperatures are above 30oF and rising, and above 40oF, respectively.

2D.5

MATERIALS.

General Requirements. Provide locally available materials that comply with the State Specifications for asphalt concrete pavements and all requirements herein.

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

Asphalt Cement. AASHTO M 226 (ASTM D 3381) for viscosity-graded material and AASHTO M 20 (ASTM D 946) for penetration-graded material.

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

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.

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

2D.7

CONSTRUCTION.

Surface Preparation.

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

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

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.

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.

Placement of Mix.

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.

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.

Paver Placing. Place in strips not less than 10 feet wide, unless otherwise acceptable to the COR. 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.

Joints. Make joints between old and new pavements, or between successive days' work, to ensure continuous bond between adjoining work. Construct joints to have the same texture, density, and smoothness as other sections of asphalt concrete course. Clean contact surfaces and apply tack coat.

Rolling.

General.

Begin rolling when mixture will bear roller weight without excessive displacement.

Compact mixture with hot hand tampers or vibrating plate compactors in areas inaccessible to rollers.

Breakdown Rolling. Accomplish breakdown or initial rolling immediately following rolling of joints and outside edge. Check surface after breakdown rolling, and repair displaced areas by loosening and filling, if required, with hot material.

Second Rolling. Follow breakdown rolling as soon as possible, while mixture is hot. Continue second rolling until mixture has been thoroughly compacted.

Finish Rolling. Perform finish rolling while mixture is still warm enough for removal of roller marks. Continue rolling until roller marks are eliminated and course has attained maximum density.

F.

Patching. Remove and replace paving areas mixed with foreign materials, and defective areas. Cut out such areas, and fill with fresh, hot asphalt concrete. Compact by rolling to maximum surface density and smoothness.

G.

Protection. After final rolling, do not permit vehicular traffic on pavement until it has cooled and hardened.

2D.8

FIELD QUALITY CONTROL.

General. Test in-place asphalt concrete courses, at intervals as directed by the COR, for compliance with requirements for thickness and surface smoothness. Repair or remove and replace unacceptable paving as directed by the COR.

Thickness. In-place compacted thickness will not be acceptable if they exceed the following allowable variation from required thickness:

Base Course. 1/2-inch

Surface Course. 1/4-inch

Surface Smoothness. Test finished surface of each asphalt concrete course for smoothness, using 10-foot straightedge applied parallel with, and at right angles to, centerline of paved area. Surfaces will not be acceptable if they exceed the following tolerances for smoothness.

Base Course Surface. 1/4-inch

Wearing Course Surface. 3/16-inch

Crowned Surfaces. Test with crowned template centered and at right angle to crown. Maximum allowable variance from template: 1/4-inch.

808316

DIVISION 2 - SITEWORK

SECTION 2E

DEMOLITION

2E.1 SCOPE OF WORK: The extent of work is indicated on the drawings and by the requirements of this section.

2E.2 EXECUTION: By careful study of the contract documents, determine the location and extent of demolition to be performed. At the Contractor’s option, the existing glide slope shelter may be removed and disposed of without demolition, subject to local, state, and federal requirements regarding such disposal.

In company with the COR verify the extent and location of demolition required.

Carefully identify limits of demolition.

Mark interface surfaces as required to enable workmen also to identify items to be removed and items to be left in place intact.

Prepare and follow an organized plan for emolition and removal of items.

Protect existing utility lines in accordance with the utility having jurisdiction.

Completely remove items scheduled to be so demolished and removed, leaving surfaces clean, solid, and ready to receive new materials specified elsewhere.

C.

The COR shall be notified before any demolition is performed. The FAA will be allowed to salvage any items from the equipment that is to be removed. Materials and equipment to be removed and salvaged shall remain the property of the FAA. Materials and equipment not salvaged by the FAA are the Contractor's property and shall be removed from the site.

D.

Initiate, maintain, and supervise safety precautions and programs in connection with the work. Erect and maintain, as required by conditions and progress of the work, all necessary safeguards for safety and protection of personnel.

In the event of demolition of items not scheduled to be demolished, promptly replace such items to the approval of the COR at no cost to the Government.