ATTACHMENT 3 Statement of Work Basewide Sidewalks.pdf

Statement of Work Project # HKRZ202015

Basewide Sidewalks

188th Civil Engineering Squadron, Arkansas Air National Guard Fort Smith Regional Airport

4850 Leigh Avenue Fort Smith, AR

GENERAL SCOPE

188th Wing Air National Guard Civil Engineering Squadron intends to install sidewalk with handicap ramps and footbridge. The site of work is at the 188th Wing, Arkansas ANG, Fort Smith, Arkansas.

Contractor will take necessary precautions to avoid damage to surrounding property and/or materials, private or government owned. Contractor will limit his personnel to those areas required to perform work as specified. Contractor will coordinate with the contracting officer and/or his designated representative regarding his proposed work schedule. Contractor will be considered liable for damage caused by negligence on his/her part. Contractor is responsible for employees and sub-contractors.

OVERVIEW

SIDEWALK:

Construct Sidewalk according to plan drawings and City of Fort Smith Details and Specifications. All sidewalk will be field marked prior to start of construction.

Demolish existing sidewalk and concrete display area by building 201 as marked on plans. Ensure proper dig permits are completed before Demo.

See City of Fort Smith Standard Specifications for Sidewalk, ramps, and steps including all excavation, fine grading, form work, concrete, finishing, backfilling and related and incidental work necessary for the completed work.

• MATERIALS. All materials used shall be in accordance with the following:

• CONCRETE. All concrete shall be Class “AA” (3500 psi) air entrained, fiber reinforced, as specified in Section 401 “Concrete.” The maximum size aggregate used shall be 1 inch with a gradation conforming to ASTM C33, Gradation No. 57 or No. 67. If thickness of concrete is greater than 5 inches, aggregate maybe maximum size of 1½ inches, ASTM C33, Gradation No. 457.

• EXPANSION JOINT MATERIAL. Expansion joint filler shall be Type 1 pre-formed expansion joint filler, as specified in Section 401 of the specifications.

• DRAIN PLATE AND FRAME. Steel for sidewalk drain plate and frame shall comply with ASTM A-48, Class 35B Gray Iron. Surfaces exposed to pedestrian use shall have non-slip finish.

• HANDICAP RAMP PANELS. The detectable warning device used in handicap ramps shall be cast-in-place tactile panels composed of a vitrified polymer composite material. The color of the tactile panels shall conform to Federal Color No. 33538, and shall be homogeneous throughout the product.

CONSTRUCTION REQUIREMENTS

• SUBGRADE. The subgrade shall be excavated to the required depth below the finished surface, according to the dimensions shown on the plans, and shall be compacted to density as determined and specified in Section 203 “Excavation and Embankment.” All soft and yielding areas shall be removed and replaced with suitable material and compacted with approved mechanical tampers. When the sidewalk is to be removed and replaced, acceptable material may be placed under the new sidewalk as shown on the plans, or as directed by the Engineer, to bring the new sidewalk to the correct elevation. The cost for providing and placing this acceptable material shall be considered incidental to the sidewalk.

• FORMS. Forms shall be as specified in section 401 of City of Fort Smith Standard specifications. All grades and form work will be checked by COR (LtCol Riley Donoho) prior to any concrete pours.

• MACHINE PLACEMENT. At the Contractor’s option an approved slipform/extrusion machine may be used to place applicable sections of the sidewalk. Slip form equipment shall have an automatic sensor for control of alignment and grade. The machine approved shall be so designed as to place, spread, consolidate, screed and finish the concrete in one complete pass in such a manner that a minimum of hand finishing will be necessary to provide a dense and homogeneous concrete section. The machine shall shape, vibrate and/or extrude the concrete for the full width and depth of the concrete section being placed. It shall be operated with as nearly a continuous forward movement as possible. All operations of mixing, delivery and spreading concrete shall be so coordinated as to provide uniform progress, with stopping and starting of the machine held to a minimum. The finish texture of the sidewalk and the joint locations shall be identical for either the machine placed or formed methods. If Contractor elects to use an approved slipform/extrusion machine, no additional compensation will be paid the Contractor due to changes in the alignment of the sidewalk, prior to placement, which requires the use of hand-forms for sections of the sidewalk.

• PLACING AND FINISHING. Mixing, placement and finishing of concrete shall conform to Section 401 of the specifications. The concrete shall be deposited in one course for the entire sidewalk. The sidewalk surface shall be given a Class 6, Broomed Finish, perpendicular to the length of the sidewalk, unless otherwise noted on the plans. Contractor will ensure all grades meet ADA requirements. All field adjustment will be approved through COR unless there is a cost or time discrepancy. All utility valve boxes, handholes or other utility access will be brought to the surface of any new concrete finish grade. Do not cover up any utility access points with new pours.

• JOINTS. Joints shall be installed as specified in Section 401 of the specifications. Contraction joints shall be cut transversely at intervals matching the width of the sidewalk but never at intervals exceeding 6 feet. These joints shall be at right angles to the centerline of the sidewalk. The joints may be sawed at the Contractor’s option. Expansion joints shall be provided at the locations shown on the plans and shall be placed at maximum intervals of 100 feet unless otherwise noted on the plans. At locations where obstructions such as power poles, drainage inlets, and fire hydrants are encountered, excluding curbing, expansion joints shall be placed transversely in the sidewalk. The expansion material shall furthermore surround these obstructions. The transverse expansion joint shall be centered on the diameter of the obstruction.

• CURING. The concrete shall be cured with a liquid membrane curing compound as specified in Section 401. Pedestrian and vehicular traffic shall be excluded from the use of the concrete for at least 72 hours.

• HANDICAP ACCESS RAMP. Ramps shall be placed in sidewalk at the locations shown on the plans, or as designated by the Engineer, and constructed per the Standard Drawings. The concrete surface of the ramp shall be a broomed finish. The detectable warning device shall be located so that the nearest edge of the device is 6 to 8 inches from the face of the curb.

Detectable warning device shall be 24 inches in the direction of travel and extend the full width of the ramp.

• BACKFILL. After the concrete has set sufficiently, but no sooner than 24 hours after placement, the forms shall be removed. After forms, stakes and other debris has been removed, the area adjacent to the sidewalk shall be backfilled with suitable material approved by the Engineer, to the grade shown on the plans and to a depth allowing for the placement of sodding level with the top of the sidewalk. Backfill material, placement and compaction shall be as specified in Section 203 of the City of Fort Smith Standard Specifications.

• FOOTBRIDGE:

Install a 40’ long 5’ wide fiberglass reinforced polymer (FRP) pedestrian truss bridge.

Contractor shall provide all temporary support and rigging equipment if needed. Contractor is responsible for the engineering design and construction of the bridge abutments, piers and/or footing ensuring shear and tensile strength to support the bridge and live loads. If bridge is shipped in component parts or partially assembled Contractor will follow guidelines of assembly drawings and recommended assembly procedure from manufacturer based on PE stamped engineering drawings and bridge support reactions provided by manufacturer. The bridge will include the following: Fiberglass Support Trusses, 42” high hand-railings, Straight ends, Standard top cap with solid-color paint coating, Safety mid-rails (per ADA specifications, 3-3/4” maximum spacing), A307 hot-dipped galvanized steel hardware, standard dead load camber design, 3x12 P.T. Southern Yellow Pine Decking w/ deck screws.

• SOD:

Contractor will sod all disturbed areas and grade to match existing grades as required. Use manufacturing watering recommendations until proper germination has been established.

• Bids will be based on a Per LF Sidewalk, Per EA Handicap Ramp, Per EA Footbridge, and lump sum Demo of building 201 sidewalk. The Minimum and Maximum Range of Sidewalk that will be funded is 1,500 – 3,800 LF. The Minimum and Maximum Range of Handicap Ramps that will be funded is 5-16 Handicap Ramps.

CONSTRUCTION PERFORMANCE PERIOD

The offeror shall identify the proposed construction performance period. The proposed performance period will not exceed 180 days.

SUBMITTALS

The contractor will provide minimum items for submission for acceptance of products for the project:

• Concrete Mix design

• Footbridge design

• Paint colors

STANDARDS

• ANG ETL 01-1, (TAB D), Air National Guard Design Policy

• ANG ETL 02-1, (TAB C), ANG Design Objectives & Procedures

• ANGI 32-1023, Criteria & Standards for ANG Construction

INVESTIGATION

The offeror shall accomplish the necessary field surveys and investigations by visual inspection of the construction site included in the scope of work as required considering the existing conditions. Inspection may be performed jointly with the BCE or his designated representative identifying and resolving any items requiring special attention.

CLEANUP

Residue, debris, other materials left over from removal and/or installation will be carried off base and disposed of by the contractor in compliance with federal, state, and local laws, ordinances, and codes.

Work area will be kept clean and neat, maintained in a hazard free and orderly condition.

ENVIRONMENTAL

CONTRACTOR shall be responsible for compliance with EPA/ADEQ requirements and is required to provide a list of proposed hazardous materials that will be used on the project to the Base HAZMART representative prior to commencing work (FAR 52.223-3), (DFARS 252.223-7001).

ASSUMPTIONS/EXCLUSIONS

Contractor’s proposal pricing shall be based on the following assumptions/exclusions:

• The 188th Wing’s mission requirements may, on occasions, limit the availability of the Contractor to access some or all of the project area. The BCE and/or his designated representative, will provide scheduling information to the Contractor as early as possible regarding days or times when the project area will be unavailable for the Contractor.

• The Government shall provide access to all work areas between 8:00 AM and 4:30 PM, central standard time, Monday through Friday, excluding holidays and as identified in (b) above. All work shall be performed during these designated times.

• Contractor shall utilize the 188the Civil Engineering Squadron and the Communications

Group to have the existing utilities located. The 188the CES and CG will locate private lines (water, sewer, sprinkler or irrigation lines, coax, telephone, etc.). A good “locate” is a mark within 18” horizontally from the actual underground facility (per American Public Works Association guidelines). The Contractor is not responsible for damages that occur as a result of a misloaded or “not located” facility. Gas and electric facilities must be located by AOG and OG & E respectfully. The marking of utilities must be scheduled and may take several days before completed.

CONTRACTOR MANPOWER REPORTING

The contractor shall report ALL contractor labor hours (including subcontractor labor hours) required for performance of services provided under this contract for the AIR NATIONAL GUARD via a secure data collection site. The contractor is required to completely fill in all required data fields using the following web address: http://www.ecmra.mil/

Reporting inputs will be for the labor executed during the period of performance during each Government fiscal year (FY), which runs October 1 through September 30. While inputs may be reported any time during the FY, all data shall be reported no later than October 31 of each calendar year. Contractors may direct questions to the help desk at help desk at: http://www.ecmra.mil/

• The Department of Defense Activity Address Code (DoDAAC) = W912JF

• The Unit Identification Code (UIC) for the requiring activity = F2HF0

OPERATIONS SECURITY

The Contractor shall identify an individual who will be responsible for Operations Security. That individual will be briefed on OPSEC Awareness and Critical Information during the first Pre-Work meeting.

Unless waved in writing by the Government OPSEC Officer, all draft deliverables under this PWS/SOW, and working papers associated with them, shall be shredded prior to recycling or disposal.

Drafts in electronic media will be deleted or erased prior to reusing the electronic medium or space on a computer hard drive or shared server space. Final versions of products under this PWS/SOW will be delivered to the Contracting Representative (COR).

Unless waved in writing by the Government OPSEC Officer, the Contractor shall apply "For Official Use Only" handling procedures (e.g., cover sheets, headers, digital encryption) to all draft and final deliverables under this PWS that contains information included on the installation's current Critical Information List."