Attachment_1_-_Revised_SOW.doc

FA4608-15-R-0003

Attachement 1

Pg. 2 of 5

STATEMENT OF WORK

Repair Airfield Pavement, South Apron

AWUB 13-0009

Barksdale AFB

STATEMENT OF WORK

REPAIR AIRFIELD PAVEMENT, SOUTH APRON

This project will consist of the contractor providing all materials, labor and equipment to repair two areas on the south apron, Area 1 being 20” of depth and Area 2 being 26” thick along the taxilane. The 20” thick pavement has an area of 600 square yards and the 26” is 1470 square yards. The contractor will be required to remove and replace these areas in a total time of 120 days.

This work will include but not be limited to the following work:

Area 1, This area is contained within the restricted area, see below:

1. Old pavement reports indicate this pavement is 20” thick.

2. Remove concrete and excavation of 12” of existing base material, it’s usually dirt.

3. Provide AMOCO 2000 woven geotextile fabric (or equal) under 12” of base course. Both sub base and base course should be compacted to 95% of modified proctor and test to verify compaction

4. Provide 10” dowel basket assemblies 15” OC where Construction Joints (CJ) are indicated. Provide sawcut joints at least 4” in depth over dowel baskets. Place 1” diameter x 24” long bars drilled and epoxied into adjacent pavement at 15” OC (epoxy according to LADOT spec. section 1017, type 1). Ensure to stay away from existing baskets where applicable by 6”

5. Replace 20” of concrete.

6. Saw cut and thoroughly clean ½”-5/8” W x 1”-1 5/8” deep reservoir in concrete for installation of backer material

7. Install 5/8” backer rod and seal with Dow Corning 888 Silicon Joint Sealant or an approved equal

8. All reflectorized paint markings removed in conjunction with concrete removal to be replaced in kind with reflectorized paint markings utilizing Type 1 beads Area 2

1. Old pavement reports indicate this pavement is 26” thick.

2. Remove concrete and excavation of 12” of existing base material, it’s usually dirt.

3.

Provide AMOCO 2000 woven geotextile fabric (or equal) under 12” of base course. Both sub base and base course should be compacted to 95% of modified proctor and test to verify compaction

4.

Provide 10” dowel basket assemblies 15” OC where Construction Joints (CJ) are indicated. Provide sawcut joints at least 6” in depth over dowel baskets. Place 1” diameter x 24” long bars drilled and epoxied into adjacent pavement at 15” OC (epoxy according to LADOT spec. section 1017, type 1). Ensure to stay away from existing baskets where applicable by 6”

5.

Replace 20” of concrete.

6.

Saw cut and thoroughly clean ½”-5/8” W x 1”-1 5/8” deep reservoir in concrete for installation of backer material

7.

Install 5/8” backer rod and seal with Dow Corning 888 Silicon Joint Sealant or an approved equal

8.

All reflectorized paint markings removed in conjunction with concrete removal to be replaced in kind with reflectorized paint markings utilizing Type 1 beads Concrete shall be procured from a LADOT certified plant and have a minimum flexural strength of 650 psi after 28 days. Polypropylene fibers shall be added to the concrete at 1.5 lbs per cubic yard of concrete.

All work will comply with United Facilities Criteria (UFC) 3-260-02 Pavement Design for Airfields.

The contractor will adhere to the planned outages and phasing coordinated by Base Ops and CE, as well as the security measures designated for this area.

Inspections will be conducted by the Contracting Officer and/or the Contracting Officer’s Representative and the Contractor’s Manager.

The project duration is estimated at 120 days.