Specification FAA-GL-2139.doc

Repave Parking Lot & Entrance Drive, QDB ARSR, Broadview Heights, Ohio Spec. No. FAA-GL-2139

Department of Transportation Federal Aviation Administration Great Lakes Regional Office 2300 East Devon Avenue Des Plaines, Illinois 60018

FAA-GL-2139

Specification For

“ELECTRICAL WORK and REPAVE PARKING LOT & ENTRANCE DRIVE”

QDB Air Route Surveillance Radar (ARSR)

Broadview Heights, Ohio

June 16, 2015 Submitted By:

Cleveland District Office Technical Support Center—AJW-C22B Project Engineer: Ralph J. Kronz

TABLE OF CONTENTS

4DIVISION 1 - GENERAL REQUIREMENTS

1-1 Scope of Work - Electrical 1-2 Scope of Work - Drainage and Pavement-----------------------------------------------------------------------7

1-3 Pre-Construction meeting 1-4 Coordination 1-5 Applicable Documents 1-6 Site Visit 1-7 Permits 1-8 Ingress and Egress to Work Areas 1-9 Parking 1-10 Sanitary Facilities 1-11 Working Hours 1-12 Traffic 1-13 Contractor Furnished Materials 1-14 Material Storage 1-15 Compliance with Codes 1-16 Temporary Electrical Power 1-17 Verification of Dimensions 1-18 Barricades and Obstruction Markers 1-19 Testing 1-20 Workmanship 1-21 Safety 1-22 Contractor's Liability 1-23 Restoration 1-24 Cleaning DIVISION 2 – site work 2-1 Description of the work 2-2 Site Clearing 2-3 Proof Rolling of Subgrade 2-4 Asphalt Concrete Pavement 2-4.1 Codes & Standards 2-4.2 Weather Limitations 2-4.3 Subbase 2-4.4 Prime Coat 2-4.5 Base Course 2-4.6 Tack Coat 2-4.7 Wearing (Surface) Course 2-4.8 Compaction 2-5 Seal Coat 2-6 Pavement Marking DIVISION 3 - concrete 3-1 General 3-2 Codes and Standards 3-3 Materials 3-3.1 Reinforcing 3-3.2 Concrete Table of Contenets, Cont'd.

3-4 Mix Requirements 3-5 Joints 3-5.1 General 3-5.2 Expansion Joints 3-5.3 Contraction (Control) Joints 3-5.4 Sealing 3-6 Finishing 3-6.1 Walkway 3-6-2 Curb 3-7 Curing and Protection 3-8 Delivery Tickets 3-9 Testing 3-10 wheel stops (Bumpers)

DIVISION 4 – SEGMENTAL RETAING WALL

4-1 General 4-2 Codes and Standards 4-2.1 Segmental Retaing Wall Units 4-2.2 Drainage Pipe 4-3 Materials 4-3.1 Segmental Retaining Wall Units 4-3.2 Concrete Segmental Retaining Wall Connection Pins 4-3.3 Leveling Pad 4-3.4 Drainage Aggregate 4-3.5 Drainage Pipe 4-4 Installation 4-4.1 SRW Unit Installation 4-4.2 SRW Cap Installation

DIVISION 1 - GENERAL REQUIREMENTS

1-1 Scope of Work – Electrical

This specification along with project drawings and applicable codes. The project will replacement the overhead power cable and telecommunications cable. The project will include the placement of the new: transformer foundation and underground conduit for power and communication cables for the Federal Aviation Administration (FAA).QDB ARSR (Air Route Surveillance Radar) site. . The ARSR facility is located at 9661 Broadview Road, Broadview Heights, Ohio. The project contains, but is not limited to, the following work items:

Transformer Foundation & Buried Conduit Work

1.

The Contractor shall contact First Energy prior to beginning with work to discuss the details of the transformer foundation position, orientation, working clearances, construction specifications, and inspection procedures.

2.

The Contractor shall provide and install a precast concrete transformer foundation as specified in this document and as noted and shown on the project drawings.

3.

The Contractor shall install four buried 4” conduits, and drain line as specified in this document and as noted and shown on the project drawings.

4.

The Contractor shall bring the four 4’ conduits up the existing power pole noted on the provided drawing.

5.

The Contractor shall coordinate with AT&T for the termination of AT&T Cables. The Contractor Shall route the existing AT&T cable in the 4” conduit mounted on the base of the power pole into the same duck bank as the power cables.

6.

The Contractor shall install two runs of 3/0 cable run from the transformer secondary to the buildings meter mounted on the building noted on the provided drawing.

7.

The Contractor shall dig a trench at a minimum of 36’ below the grade and incase the conduits in concreate once runs have been inspected by the COR and the First Energy’s representative.

8.

The Contractor shall install a ground wire on top of the concrete duck bank and ground it at both ends with a ground rod as indicated in FAA-STD-19e.

9.

The Contractor shall install the new meter box on the side of the building. The meter box will be provided by First Energies.

10.

The Contractor shall bring the 4’ conduit 48’ above grade and secured to the side of the building.

11.

The Contactor shall hand trench a run of the AT&T cable from the duct bank around the side of the building to the demark location as noted on the drawings, The Contractor shall purchase and install a weather tight box to terminate the cable inside.

12.

The Contractor shall relocate the load bank control box and the remote maintenance monitoring cabinet as noted on the attached drawing. The Contractor shall make complete runs and no splices.

13.

The Contractor shall provide and install a new 400 amp fused service disconnect switch inside the engine generator room to correlate with the meter box on the outside wall.

14.

The Contractor shall install a Power Entrance Surge protective device.

15.

The Contractor shall route power cables from the service disconnect switch to the Automatic Transfer Switch on the opposite wall of the engine generator room and terminate the connection at that point..

16.

The Contractor shall remove both of the existing entrance switches fused and knife switch, conduit and cables.

17.

All work will be in compliance with National Electrical Code and FAA Standard FAA-STD-019e, and FAA-C-1217G.

18.

The contractor shall attend a pre-construction meeting. Security requirements, safety procedures, scheduling, etc. will be discussed at this meeting. The contractor shall come to this meeting prepared to discuss these items in detail including his proposed method for meeting these requirements. The contractor shall abide by all requirements placed on him at the meeting regarding safety practices, ingress and egress routes to the site, and maintenance of security (locking gates, etc.).

19.

All coordination between the Contractor and the FAA shall be through the FAA Contracting Officer’s Representative (COR). Coordination with the COR will be necessary throughout the work process.

20.

All bidders are encouraged to visit the site prior to bidding to familiarize themselves with existing site conditions. Failure to do so will be unacceptable justification for additional charges due to unknown site conditions. Contact Cleveland SSC at 216 265-1344 or the QDB ARSR facility at 440-526-3361 to arrange for an appointment to visit the work site.

21.

The contractor shall be responsible for obtaining all permits required to complete this project, at no additional cost to the FAA.

22.

Ingress and egress to the work areas shall be as directed by the COR. Security precautions against unauthorized site and building entrance shall be maintained. The contractor shall keep all vehicles, working equipment, and materials within the leased boundaries of the entrance drive and site plot.

23.

Contractor’s personnel shall park their vehicles where directed by the COR. All equipment not in use or at the close of each day shall be parked as directed by the COR.

24.

Sanitary facilities are not available at the site. The contractor shall provide temporary toilet facilities as needed for the work crew. Temporary toilet facilities shall be of the type approved by the local governing body. The location of the toilet facilities shall be as directed by the COR.

25.

Work shall be performed Mondays through Fridays between hours of 7:30 a.m. and 4:00 p.m. excluding government holidays.

26.

Conduct all operations to ensure minimum interference with roads, walks, and other adjacent facilities. Do not close or obstruct roads, walks or other facilities without coordination with the COR.

27.

The contractor shall furnish all materials, equipment, and labor to complete the project. The contractor shall make himself aware of all materials that he will be required to furnish under the contract. He shall identify items that have a long lead-time from a manufacturer or distributor, and shall order these items as early as possible after the contract award. The use of brand names products in this specification does not constitute a requirement that they are the only materials that meet the specifications in this contract. They are used as an illustration of known acceptable sources or products. The contractor can use products that are identical or equal to the brand name product or known acceptable source in meeting the salient characteristics. 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 the Contracting Officer's designee. To gain approval, the contractor must submit documents and/or samples that will demonstrate that that product clearly will meet the Government's minimum needs.

28.

The contractor shall store all materials in a manner to protect them from all elements of the weather. No contractor-furnished materials shall be stored inside the FAA equipment building or engine generator room.

29.

The Contractor shall furnish and install barricades obstruction markers, fencing, flagmen and signs as required to safely isolate the work area from vehicular and pedestrian traffic and to safely route such traffic around the work area. Remove fencing, barricades and markers at the completion of the project.

30.

The contractor shall be responsible for safety on the work site. It is responsibility of the contractor to eliminate hazards that may result in tripping, electrical shock, fire, falling objects, environmental hazards, vehicular accidents, etc. The contractor shall comply with all safety precautions required by OSHA. The contractor shall have two l5 lb. Class ABC fire extinguishers at the work area through the progress of welding, metal cutting, or any other process involving a spark or fire hazard. The contractor shall furnish and install barricades as required. The contractor shall provide Material Safety Data Sheet (MSDS) to the R.E. (COR) for approval prior to bring any chemicals on site.

31.

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 damage of the building or equipment at the contractor's expense. All repairs shall be accomplished to the satisfaction of the COR.

32.

Any damage to existing utilities, structures, fences, ground surfaces (tire ruts) etc., shall be repaired to the satisfaction of the COR at the contractor's expense.

33.

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 as directed by the COR.

34.

Immediately after unpacking, all packing material, case lumber, excelsior, or other rubbish, flammable or otherwise, shall be removed from the building and the premises.

35.

Upon completion of work, and before final inspection, the contractor shall remove his working tools, equipment, debris, rubbish, and unused materials from the building site.

36.

Disposal of rubbish, debris, and all of the removed materials will be off the site at the contractor's expense.

1-2 Scope of Work – Drainage and Pavement This specification along with project drawings and applicable codes & standards cover the requirements of the Federal Aviation Administration (FAA) for the reconstruction of the existing parking lot and the entrance drive to the Federal Aviation Administration’s QDB ARSR (Air Route Surveillance Radar) site. The project also includes: replacing an existing retaining wall, the installation of buried drain pipe.. The ARSR facility is located at 9661 Broadview Road, Broadview Heights, Ohio. The project contains, but is not limited to, the following work items:

Drainage & Erosion Control Work

1. The Contractor shall provide and install a 6 inch thick layer of 2” diameter crushed rock as shown on the project drawings and as specified in this document. The contractor shall also fill the eroded areas, along the west side security fence line, just outside of the secured area, using the same 2” diameter crushed rock.

2. The Contractor shall provide and install a new drain line, extending from the existing northeast ASR building corner downspout, to approximately three (3) feet outside the security fence, as shown on the project drawings and as specified in this document. The drain line shall consist of 6 inch diameter schedule 80 PVC pipe with the invert at a minimum of 2’-0” below grade. Provide and install a precast concrete splash block at the discharge end of the drain line.

3. The Contractor shall provide and install a new drain pipe beneath the entrance drive, near the bike path, as shown on the project drawings and as specified in this document. The drain piper shall consist of 12 inch precast concrete pipe, as per ASTM C76 Class IV, with the invert at a minimum of 2’-0” below the top elevation of the new pavement.

4. The Contractor shall provide and install a new drain line, extending from the new transformer foundation, to approximately three (3) feet inside of the new 2 inch crushed rock area, as shown on the project drawings and as specified in this document. The drain line shall consist of 4 inch diameter schedule 40 PVC pipe with the invert at a minimum of 2’-0” below grade. Provide and install a precast concrete splash block at the discharge end of the drain line.

Retaining Wall Work

1. The Contractor shall remove, and dispose of offsite, the existing wood tie retaining wall as shown on the project drawings.

2. The Contractor shall install new segmental retaining wall, to replace the wood tie retaining wall, as shown on the project drawing and as specified in this document.

Pavement Work

1. The Contractor shall remove existing gravel, concrete patches/pads, asphalt paving, subbase and subgrade as required to install 6 inches of compacted crushed stone subbase and a 3 inch thick asphalt pavement as specified in this document. Existing asphalt paving (including base course) is approximately 6 inches thick. New pavement elevations and contours shall be, generally, same as existing. Provide for legal offsite disposal of removed materials.

2. The Contractor shall dispose of all removed materials off site at no additional cost to the FAA.

3. The Contractor shall proof roll the entire subgrade area to be paved. Repair any unstable areas detected by adding crushed stone aggregate.

4. The Contractor shall install a compacted 6 inches thick crushed stone aggregate Subbase.

5. The Contractor shall apply Prime Coat to the subbase.

6. The Contractor Install a Base Course composed of #404 hot mix asphalt compacted to a final thickness of 1 ½".

7. The Contractor shall Apply Tack Coat to the base course.

8. The Contractor shall Install a Wearing (Surface) Course composed of #404 hot mix asphalt compacted to a final thickness of 1 ½".

9. The Contractor shall Groove asphalt pavement in the area shown on the project drawing for additional traction in winter weather.

10. The Contractor shall, after allowing new asphalt surface to cure for a minimum of 30 days, apply one coat of Penetrating Primer and two coats of Sand-Slurry Sealer.

11. The Contractor shall, after allowing sand-slurry sealer to cure for a minimum of 24 hours, paint parking stall lines with Pavement Marking as shown on the project drawings.

12. The contractor shall install precast concrete Wheel Stops.

13. The Contractor shall install concrete Curb at the pavement edge near the fence and the gravel areas as shown on the project drawings.

14. The Contractor shall install concrete: Walkway, Step, and Pad at the West Side of the ARSR building as shown on the project drawings.

Pavement Construction 1-3 Pre-Construction meeting

The contractor shall attend a pre-construction meeting. Security requirements, safety procedures, scheduling, etc. will be discussed at this meeting. The contractor shall come to this meeting prepared to discuss these items in detail including his proposed method for meeting these requirements. The contractor shall abide by all requirements placed on him at the meeting regarding safety practices, ingress and egress routes to the site, and maintenance of security (locking gates, etc.).

1-4 Coordination

All coordination between the Contractor and the FAA shall be through the FAA Contracting Officer’s Representative (COR). Coordination with the COR will be necessary throughout the work process.

1-5 Applicable Documents

The following drawings of the issue specified form a part to this specification and are applicable to the extent specified herein. If any conflict exists between drawings and the specifications, the specifications shall govern.

Drawing

Rev

Date

Title

Repave Parking Lot & Entrance Drive

QDB ARSR

Broadview Heights, Ohio

Repave Parking Lot & Entrance Drive

150 kVA & Below, 22.86Y / 13.2kVA &

Below Transformer Vault

(Page 1 of 2)

150 kVA & Below, 22.86Y / 13.2kVA &

Below Transformer Pad (Page 2 of 2)

Repave Parking Lot & Entrance Drive

Repave Parking Lot & Entrance Drive

Repave Parking Lot & Entrance Drive

Repave Parking Lot & Entrance Drive

Repave Parking Lot & Entrance Drive

1-6 Site Visit

All bidders are encouraged to visit the site prior to bidding to familiarize themselves with existing site conditions. Failure to do so will be unacceptable justification for additional charges due to unknown site conditions. Contact Cleveland SSC at 216 265-1344 or the QDB ARSR facility at 440-526-3361 to arrange for an appointment to visit the work site.

1-7 Permits

The contractor shall be responsible for obtaining all permits required to complete this project, at no additional cost to the FAA.

1-8 Ingress and Egress to Work Areas

Ingress and egress to the work areas shall be as directed by the COR. Security precautions against unauthorized site and building entrance shall be maintained. The contractor shall keep all vehicles, working equipment, and materials within the leased boundaries of the entrance drive and site plot.

1-9 Parking

Contractor’s personnel shall park their vehicles where directed by the COR. All equipment not in use or at the close of each day shall be parked as directed by the COR.

1-10 Sanitary Facilities

Sanitary facilities are not available at the site. The contractor shall provide temporary toilet facilities as needed for the work crew. Temporary toilet facilities shall be of the type approved by the local governing body. The location of the toilet facilities shall be as directed by the COR.

1-11 Working Hours

Work shall be performed Mondays through Fridays between hours of 7:30 a.m. and 4:00 p.m. excluding government holidays.

1-12 Traffic

Conduct all operations to ensure minimum interference with roads, walks, and other adjacent facilities. Do not close or obstruct roads, walks or other facilities without coordination with the COR.

1-13 Contractor Furnished Materials

The contractor shall furnish all materials, equipment, and labor to complete the project. The contractor shall make himself aware of all materials that he will be required to furnish under the contract. He shall identify items that have a long lead-time from a manufacturer or distributor, and shall order these items as early as possible after the contract award. The use of brand names products in this specification does not constitute a requirement that they are the only materials that meet the specifications in this contract. They are used as an illustration of known acceptable sources or products. The contractor can use products that are identical or equal to the brand name product or known acceptable source in meeting the salient characteristics. 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 the Contracting Officer's designee. To gain approval, the contractor must submit documents and/or samples that will demonstrate that that product clearly will meet the Government's minimum needs.

1-14 Material Storage

The contractor shall store all materials in a manner to protect them from all elements of the weather. No contractor-furnished materials shall be stored inside the FAA equipment building or engine generator room.

1-15 Compliance with Codes

The contractor shall comply with the latest edition of State of Ohio Department of Transportation Construction and Material Specifications, local codes and other codes and standards adopted by the contract documents. Where the requirements of the specifications and drawings exceed those of local and adopted codes, the contractor shall comply with the requirements of the specifications and drawings.

1-16 Temporary Electrical Power

Unless otherwise specified, the contractor shall make all arrangements and pay all costs for temporary electrical power needed for the construction.

1-17 Verification of Dimensions

The contractor is responsible to field verify all dimension used in the construction process.

1-18 Barricades and Obstruction Markers

The Contractor shall furnish and install barricades obstruction markers, fencing, flagmen and signs as required to safely isolate the work area from vehicular and pedestrian traffic and to safely route such traffic around the work area. Remove fencing, barricades and markers at the completion of the project.

1-19 Testing

The Contractor shall employ an independent testing laboratory to perform the tests specified in this document for the subgrade and pavement. All test results shall be provided to the FAA COR.

1-20 Workmanship

All work shall be accomplished by experienced workers in accordance with the highest standards of the various work trades involved.

1-21 Safety

The contractor shall be responsible for safety on the work site. It is responsibility of the contractor to eliminate hazards that may result in tripping, electrical shock, fire, falling objects, environmental hazards, vehicular accidents, etc. The contractor shall comply with all safety precautions required by OSHA. The contractor shall have two l5 lb. Class ABC fire extinguishers at the work area through the progress of welding, metal cutting, or any other process involving a spark or fire hazard. The contractor shall furnish and install barricades as required. The contractor shall provide Material Safety Data Sheet (MSDS) to the R.E. for approval prior to bring any chemicals on site.

1-22 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 damage of the building or equipment at the contractor's expense. All repairs shall be accomplished to the satisfaction of the COR.

1-23 Restoration

Any damage to existing utilities, structures, fences, ground surfaces (tire ruts) etc., shall be repaired to the satisfaction of the COR at the contractor's expense.

1-24 Cleaning

1) 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 as directed by the COR.

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

3) 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 building site.

4) Disposal: Disposal of rubbish, debris, and all of the removed materials will be off the site at the contractor's expense.

-----End of Division 1-----

DIVISION 2 – site work

2-1 Description of the work

The work primarily consists of repaving a parking lot and entrance drive maintaining – generally -same existing contours and elevations. The project also includes: replacing an existing retaining wall, the installation of buried drain pipe. The scope of work is as defined in Section 1-1 of this document. The extent of the work is as shown on the project drawings.

2-2 Site Clearing

Remove existing gravel, concrete patches/pads, asphalt paving, subbase and subgrade as required to install 6 inches of compacted crushed stone subbase and a 3 inch thick asphalt pavement as specified in this document. Provide protections necessary to prevent damage to existing improvements that are to remain in place. Provide for legal off site disposal of removed materials.

2-3 Proof Rolling of Subgrade

Prior to placing the crushed stone subbase, proof roll the entire exposed subgrade area. The minimum roller weight shall be 10 tons. Maximum operating speed shall not exceed 4 mph. The entire area shall receive a minimum of 10 roller passes. Repair any unstable areas detected by adding crushed stone aggregate. The contractor shall employ an independent testing laboratory to determine the maximum density of the subgrade soil in conformance with ASTM D 1557. The independent testing laboratory shall also determine the in-place density of the subgrade in conformance with ASTM D 1556. Two (2) tests shall be performed in the parking lot area and two (2) tests in the entrance drive to determine the in-place density. The location for each test sample must be approved by the FAA COR. The minimal acceptable degree of compaction (Relative Density) is 98% of the maximum density. If the results of any of the tests performed does not meet this specified minimum, the subgrade of the entire parking lot or drive area from which the sample was taken shall be sub-cut 12" and the bottom of this sub-cut scarified 6". Then the materials shall be reinstalled and re-compacted and two additional tests made. This procedure shall be followed until the specified density is achieved for both tests performed in any of the above-described areas. Proper subgrade elevations and slopes shall be attained.

2-4 Asphalt Concrete Pavement

The extent of the asphalt concrete paving work is shown on the project drawings. The finish pavement surface elevations and drainage contours shall be consistent with the drawings and have a tolerance of (+/-) 3/16". The surface shall be smooth, uniform, and true to the plan grade and drainage slope. Any high or low areas along the slopes shall be corrected to minimize ponding of water and restrictions to water draining off the pavement. Pavement surfaces shall be free from irregularities exceeding 3/16" as measured with a 10-foot straight edge along the design slope and perpendicular to the design contour lines.

2-4.1 Codes & Standards

A. The latest issue of “State of Ohio, Department of Transportation, Construction and Material Specifications.”

B. American Association of State Highway and Transportation Officials (AASHTO)

2-4.2 Weather Limitations

A. Place crushed stone aggregate Subbase when air temperature is above 30 degree F and rising.

B. Construct asphalt concrete Base and Wearing (Surface) courses when atmospheric temperature is above 40 degree F and when supporting surface is dry.

C. Apply Prime and Tack coats when ambient temperature is above 50 degree F for 12 hours immediately prior to application. Do not apply when surface is wet or contains an excess of moisture.

2-4.3 Subbase

Install a 6-inch thick crushed stone aggregate subbase as per the latest issue of “State of Ohio Department of Transportation Construction and Material Specifications, Item 304 Aggregate Base”. The subbase shall be compacted by a minimum of 10 passes with a roller with a minimum weight of 10 tons. Areas too small or inaccessible to the roller shall be thoroughly compacted with the use of a hand operated vibratory plate compactor or vibratory roller. The final thickness of the compacted layer shall be 6 inches. The aggregate shall be crushed carbonate stone with the following gradation:

Sieve

Total Percent Passing

2 inch

1 inch

70-100

3/4 inch

50-90

No. 4

30-60

No. 30

9-33

No. 200

0-13

2-4.4 Prime Coat

Prime coat shall be cut-back asphalt type; AASHTO M 82 (ASTM D 2027) MC-30, MC-70, or MC-250. Application rate shall be between 0.3 and 0.5 gal./SY.

2-4.5 Base Course

Asphalt shall be #404 as specified by State of Ohio Department of Transportation Construction and Material Specifications manual. Asphalt shall be 50 blow Marshal design mix with a minimum of 6% liquid asphaltic cement. The delivery temperature shall be between 275 degree F to 300 degree F. All asphaltic concrete that is not installed and compacted in place before its temperature drops below 185 degree F shall be rejected. Over heated asphalt shall also be rejected. Placing shall not start until the prime coat is set. Rolling shall begin as soon as the material will bear the weight of the roller without undue displacement, hairline cracking or heat checking. The pavement shall be rolled with a self-propelled steel wheel tandem roller weighing not less than eight tons. Rolling shall continue until a smooth, thoroughly compacted surface of uniform texture has been obtained. All asphalt shall have been rolled completely before it gets below 185 degree F. Rolling shall be done until the asphalt reaches 95% compaction. Any irregularities or depressions that develop under rolling shall be corrected to the satisfaction of the COR. Areas too small or inaccessible to the roller shall be thoroughly compacted with the use of a hand operated vibratory plate compactor or vibratory roller. The final compacted thickness of the base course shall be 1 ½" inches (+/- 3/16").

2-4.6 Tack Coat

Use emulsified asphalt; AASHTO M 140 (ASTM D 977) or M 208 (D 2397); SS-1, SS-1h, CSS-1 or CSS-1h, diluted with one part water to one part emulsified asphalt. Distribute at rate of 0.05 to 0.15 gal per sq. yd. of surface.

2-4.7 Wearing (Surface) Course

Asphalt shall be #404 as specified by State of Ohio Department of Transportation Construction and Material Specifications manual. Asphalt shall be 50 blow Marshal design mix with a minimum of 6% liquid asphaltic cement. The delivery temperature shall be between 275 degree F to 300 degree F. All asphaltic concrete that is not installed and compacted in place before its temperature drops below 185 degree F shall be rejected. Over heated asphalt shall also be rejected. Placing shall not start until the tack coat is set. Rolling shall begin as soon as the material will bear the weight of the roller without undue displacement, hairline cracking, or heat checking. The pavement shall be rolled with a self-propelled steel wheel tandem roller weighing not less than eight tons. Rolling shall continue until a smooth, thoroughly compacted surface of uniform texture has been obtained. All asphalt shall have been rolled completely before it gets below 185 degree F. Rolling shall be done until the asphalt reaches 95% compaction. Any irregularities or depressions that develop under rolling shall be corrected to the satisfaction of the COR. Areas too small or inaccessible to the roller shall be thoroughly compacted with the use of a hand operated vibratory plate compactor or vibratory roller. The final compacted thickness of the base course shall be 1 ½" inches (+/- 3/16").

2-4.8 Compaction

The target density is 95% of the Theoretical Maximum Density as determined in accordance with ASTM D 2941 “Theoretical Maximum Specific Gravity and Density of Bituminous Paving Mixtures.” Determine the density of pavement by in-place testing using the Nuclear Method in Accordance with ASTM D 2950 “Density of Bituminous Concrete in Place by Nuclear Methods.” Two tests shall be made in parking lot area and two tests shall be made in the entrance drive area. The acceptable range of density is 95% to 100% of the Theoretical Maximum Density.

2-5 Seal Coat

Seal coat shall be “Jennite” as manufactured by “Neyra Industries,” or approved equal.

Neyra Industries, Inc.

10700 Evendale Drive

Cincinnati, Ohio 45241

Phone: 800-543-7077

Test data for approval of an “equal” must be submitted a minimum of 14 days prior to application. The new asphalt surface must be cured a minimum of 30 days prior to application. Prior to sealing the surface shall be thoroughly cleaned to remove all foreign debris (dirt, silt, gravel, leaves, etc.) using mechanically powered forced air sweeper and steel bristle hand brooms. Any mud-covered areas shall be scraped thoroughly, scrub-washed and pressured rinsed with clear fresh water. Oil spots shall be scraped, scrubbed, and lightly burned with a torch if necessary to remove visible excess oil. Oil spots after cleaning, shall be coated with a Neyra or approved equal oil spot primer to achieve adequate adhesion and prevent bleeding Apply one coat of Neyra Industries Polyprime Penetrating Primer followed by two coats of Jennite sand-slurry sealer. Sealer shall contain Grade 50 Silica Sand. (500 lbs sand per 100 gal of Jennite). Follow the manufacture’s application instructions. The sealer shall be applied uniformly over the entire repaved surface.

2-6 Pavement Marking

All pavement marking shall be made as shown on the project drawing. Paint shall meet the requirements of the latest issue of “State of Ohio Department of Transportation Construction and Material Specifications” for traffic zone paint. Rates of application, surface preparation, weather conditions, and installation procedures, must comply with the Ohio DOT standard mentioned above. A water-based 100% acrylic paint shall be used. Allow seal coat to cure a minimum of 24 hours before painting. Barricades shall be installed as required to protect the fresh paint until dry.

Conduct operations in such a manner that necessary traffic can move without hindrance. Protect the newly painted markings so that, insofar as possible, paint will not be picked up by the tires of passing vehicles. Place warning signs at the beginning of wet line, and at points well in advance of the marking equipment for alerting approaching traffic from both directions. Place small flags or other similarly effective small objects near freshly applied markings at frequent intervals to reduce crossing by traffic. Efface and replace damaged portions of markings at no additional cost to the Government.

----End of Division 2-----

DIVISION 3 - concrete

3-1 General

This section covers the concrete work for the walkway, pad, step, curbs, and wheel stops. The extent of the concrete work is as shown on the project drawings and described in this specification.

3-2 Codes and Standards

Comply with the provisions of the latest editions of the following codes, specifications and standards, except where more stringent requirements are shown or specified:

a) ACI 301 "Specifications for Structural Concrete for Buildings".

b) ACI 318 "Building Code Requirements for Reinforced Concrete".

c) Concrete Reinforcing Steel Institute, "Manual of Standard Practice".

d) "State of Ohio, Department of Transportation, Construction and Material Specifications"

3-3 Materials

3-3.1 Reinforcing

Reinforcing bars: ASTM A 615, Grade 60, deformed.

Welded wire fabric (W.W.F.): ASTM A 185, steel welded wire fabric.

Supports for reinforcement: Provide supports for reinforcement including bolsters, chairs, spacers and other devices for spacing, supporting and fastening reinforcing bars and welded wire fabric in place. Use bar type supports complying with CRSI specifications.

3-3.2 Concrete

Portland cement: ASTM C 150, Type I.

Aggregates: ASTM C 33.

Water: Water shall be potable.

Air-entraining admixture: ASTM C 260.

Water-reducing admixture: ASTM C 494 Type E.

3-4 Mix Requirements

Concrete mix shall be designed for a 28 day design strength of 4000 PSI. Use water reducing additives as required to meet the required slump without exceeding the specified water to cement ratio shown below:

a) 28 day strength: 4000 PSI Minimum

b) Maximum water to cement ratio: 0.4

c) Air entrainment: 6% (+/- 1%)

d) Slump: 1-3 inch Normal, 4 inch Maximum

The contractor shall give the COR a certificate from the concrete supplier, bearing the intended job mix and certifying that the concrete delivered will meet the above requirements. The contractor shall obtain approval of the job mix from the COR prior to placing concrete.

3-5 Joints

3-5.1 General

Provide expansion and contraction joints as required by “State of Ohio, Department of Transportation, Construction and Material Specifications”, Item 608 and 609.

3-5.2 Expansion Joints

Form expansion joints by a preformed filler material between existing structures (curb, walls, or pavement) and new concrete. Expansion joints shall be 1/2 inch in width.

3-5.3 Contraction (Control) Joints

Place contraction joints so that monolithic sections shall be in 10-foot maximum sections. Saw cut joints to a depth of 1/4 of the concrete thickness. The saw cut width shall be 1/4 inch (+/- 1/16 inch). Radius all edges to provide 1/2 inch radius.

3-5.4 Sealing

Fill all expansion and contraction joints with the proper sealing material as required. Make sure that the joints are cleaned, dried and applied as soon after the end of the curing period as weather conditions permit. Perform the work in a workmanlike manner and remove all excess material.

3-6 Finishing

3-6.1 Walkway

The concrete surface shall be struck off with a template and smoothed with a float to obtain a sandy texture. All outside edges and joints shall be edged with a ¼” radius edging tool. The surface of the walkway shall be divided into equally spaced blocks at approximately 5-foot intervals.

3-6-2 Curb

The top of the curb shall be floated in such a manner to thoroughly compact the concrete and produce a smooth and even surface. The edge of the curb shall be rounded by special tool.

Note: Precast Concrete Curb units may be used in lieu of cast in place curb.

3-7 Curing and Protection

Apply curing and sealing compound according to the manufacturers recommended rate of application to all exposed surfaces immediately after final finishing operations and to all formed surfaces immediately following the removal of forms. Forms shall remain in place a minimum of 36 hours after placement. Protect all concrete from freezing for a minimum of 48 hours following placement.

Any concrete showing injury, cracks, or damage due to inadequate curing shall be repaired or replaced by the Contractor at no additional cost.

3-8 Delivery Tickets

At the time of concrete delivery, the contractor shall give the COR a copy of the delivery ticket bearing the quantity, air content, and design strength delivered.

3-9 Testing

If the COR determines that concrete strength and air entrainment tests are needed, the FAA will make arrangements for and bear costs of such tests.

3-10 wheel stops (Bumpers)

Precast of 3,500 psi air-entrained concrete. Secure wheel stops to asphalt concrete surface with not less than two ¾” diameter galvanized steel dowels. Drill placement holes oversize and embed dowels in hot bituminous grout material.

-----End of Division 3-----

DIVISION 4 – SEGMENTAL RETAINING WALL

4-1 General

This section covers the work for to install a segmental retaining wall system (SRW) to replace an existing wood tie retaining wall where shown on the project drawings.

4-2 Codes and Standards

Comply with the provisions of the latest editions of the following codes, specifications and standards, except where more stringent requirements are shown or specified:

4-2.1 Segmental Retaining Wall Units

a) ASTM D 4595 "Sampling and Testing Concrete Masonry Units".

b) ASTM C 1372 "Standard Specification for Dry-Cast Segmental Retaing Wall Units".

4-2.2 Drainage Pipe

a) ASTM F 758 “Standard Specification for Smooth-Wall Polyvinyl chloride (PVC) Plastic Underdrain Systems for Highway, airport of Similar Drainage”.

b) ASTM F 405 "Standard Specification Corrugated Polyethylene (PE) Pipe and Fittings".

4-3 Materials

4-3.1 Segmental Retaining Wall Units a) Segmental retaining wall (SRW) units shall be machine formed, Portland cement concrete blocks specifically designed for retaining wall applications. An example of an approved retaining wall unit is: VERSA-LOK Standard Retaining Wall Units. Use of other manufacturer’s retaining wall units must be approved by the FAA Project Engineer.

b) Color of the SRW units shall be natural.

c) Finish of the SRW units shall be split-face.

d) SRW units shall provide a minimum weight of 120 psf wall face area.

e) SRW units shall be solid through the full depth of the unit.

f) SRW units shall have a depth (front face to rear) to height ratio of 2:1 minimum.

g) SRW units shall be capable of being erected with the horizontal gap between adjacent units not exceeding 1/8 inch.

h) SRW units shall be interlocked with connecting pins that provide a ¾ inch setback from unit below (yielding a 7-degree cant from vertical).

i) SRW units shall be sound and free of cracks or other defects that would interfere with the proper placing of the unit or significantly impair the strength or permanence of the structure. Any cracks or chips observed during construction shall fall within the guidelines outlined in ASTM C 1372.

j) SRW units molded dimensions shall not differ more than +/- 1/8” from that specified, as measured in accordance with ASTM C 140. This tolerance does not apply to architectural surfaces, such as split faces.

k) SRW units shall conform to the requirements of ASTM 1372 and have a minimum net average 28 days compressive strength of 3000 psi. Compressive strength test specimens shall conform to the saw-cut coupon provisions of ASTM C140.

4-3.2 Concrete Segmental Retaining Wall Connection Pins Connection Pins: SRW units shall be interlocked with connection pins. The pins shall consist of glass-reinforced nylon made for the expressed use with the SRW units supplied.

4-3.3 Leveling Pad Leveling Pad: Material for the leveling pad shall consist of crushed stone or gravel and shall be a minimum of 6 inches in depth. Lean concrete with a strength of 200-300 psi and 3 inches thick, minimum, may also be used as a leveling pad material. The leveling pad should extend laterally at least a distance of 6 inches from the toe and heel of the lowermost SRW unit.

4-3.4 Drainage Aggregate

Drainage Aggregate: Material for the drainage aggregate shall be angular, clean stone or granular fill meeting the following gradation as determined in accordance with ASTM D422

Sieve

Total Percent Passing

1 inch

3/4 inch

75-100

No. 4

0-60

No. 40

0-50

No. 200

0-5 4-3.5 Drainage Pipe

a) The drainage connection pipe shall be perforated or slotted PVC, or corrugated HDPE pipe. The drainage pipe may be wrapped with a geotextile, to function as a filter.

b) Drainage pipe shall be manufactured in accordance with ASTM F 405 or ASTM F 758.

4-4

INSTALLATION

4-4.1 SRW Unit Installation

a) Install a leveling pad. The leveling pad should extend laterally at least a distance of 6 inches from the toe and heel of the lowermost SRW unit.

b) First course of SRW units shall be placed on the leveling pad. The units shall be leveled side-to –side, front-to- rear, and with adjacent units, and aligned to ensure intimate contact with the leveling pad. The first course is the most important to ensure accurate and acceptable results. Not gaps shall be left between the front of adjacent units. Alignment may be done by means of a string line or offset from base line to the back of the units.

c) All excess debris shall be cleaned from tip of units and the next course of units installed on top of the units below.

d) Two (2) connection pins shall be inserted through the pin holes of each upper-course unit into the receiving slots in the lower-course units. Pins shall be fully seated in the pin slot below. Units shall be pushed forward to remove any looseness in the unit-to-unit connection.

e) Provide a perpendicular return wall at each end of the main wall. The return walls shall run a minimum of 3 feet into the earth embankment. Install corners in general accordance with the SRW manufacturer’s installation guidelines. Walls meeting at corners shall be interlocked by overlapping successive courses.

4-4.2 SRW Cap Installation

a) Install SRW caps properly aligned and glued to underlying units with the flexible, high-strength concrete adhesive available from the SRW system manufacturer. Rigid adhesive or mortar are not acceptable.

b) Caps shall overhang the top course of units by ¾ inch to 1inch. Slight variation in the overhang is allowed to correct alignment at the top of the wall.

-----End of Division 4-----

-----End of Specification-----

Printing Date: 05/13/16 Page 2 of 23