Statement_of_Work.pdf

U.S. Department of Homeland Security/ FEMA Region II

1 World Trade Center, 52nd Floor New York, New York 10007.

Statement of Work Concrete Repair Work at EARLE

1. Introduction

This requirement is to provide Concrete Repair Work at the FEMA Building C-54 located at the Naval

Weapons Station EARLE, in Colts Neck, NJ to accommodate and maintain a safe FEMA workspace environment for staff.

Instructions to bidders

A. Bidders are requested to submit an estimate for work as described in the “Statement of Work”

(SOW) below. The estimate shall include the cost of all labor, materials, equipment rentals, etc.

as required to complete all work as described in the "Statement of Work" or as reasonably inferred.

B. Bidders are to provide the Past Performance Questionnaire that is included to three (3) present or former clients. The client is to email the completed questionnaire to the Contracting Officer directly. Past Performance questionnaires will not be accepted if sent by the bidder.

C. A site visit will be conducted on Monday, August 06, 2018, 11am – 1pm EST. Contractors will need to provide a list of attendees by Wednesday, August 01, 2018, 4:00 PM, EST to Tiffany

Strickland at tiffany.strickland@fema.dhs.gov and Merlys Aviles at merlys.aviles@fema.dhs.gov

D. Before submitting a proposal, maximum of ten (10 pages), and drawings, the bidders shall carefully examine and visit the site at NWS Earle Colts Neck, NJ and check existing conditions.

The bidders will utilize the Earle Floor Plan (PDF document supplied by FEMA) as a tool in locating mechanical equipment. The Earle Floor Plan identifies the approximate location of all spaces. Should the bidders find discrepancies in or omissions from the scope of work listed below, bidder shall notify the contracting officer, who will send written instruction to all bidders regarding this discrepancy or omission via www.fedbid.com under Fedbid Buy #932086.

E. The contractor is to submit a schedule outlining all tasks and dates for project completion.

F. The contractor is to submit product data and finish samples for approval prior to application or purchase.

G. Location

The work is located at: Naval Weapons Station Earle

201 New Jersey Route 34, Bldg. C-54, Colts Neck, NJ 07722 mailto:tiffany.strickland@fema.dhs.gov http://www.fedbid.com/

Statement of Work – Concrete Repair

Please Note: Security Information for NWS Earle:

Naval Weapons Station Earle’s security performs a background check on all personnel entering the Naval Base. Driver’s must be U.S. citizens and are required to present a valid driver’s license, vehicle registration, and proof of insurance. All vehicles, exterior and interior, will be thoroughly inspected by base security.

H. Proposal shall be submitted electronically, referencing solicitation # 70FBR218Q00000028 to www.fedbid.com under Fedbid Buy # 932086.

Bidders shall prepare a breakdown of costs by trades following industry standard CSI format. This should be in a clear and concise form, permitting ease of discussion. THE CONTRACTOR SHALL PROVIDE

AN ALL INCLUSIVE (EQUIPMENT, SUPPLIES AND LABOR) FOR ADDITIONAL WORK AS

REQUIRED AND AT LOCATIONS REQUESTED BY FEMA.

I. All bidders shall use the Service Contract Act wage determination No.: 2005-2351 for

Monmouth County, NJ. The McNamara-O’Hara Service Contract Act requires contractors and subcontractors performing services on prime contracts in excess of

$2,500 to pay service employees in various classes no less than the wage rates and fringe benefits found prevailing in the locality, or the rates (including prospective increases) contained in a predecessor contractor's collective bargaining agreement. The Department of Labor issues wage determinations on a contract-by-contract basis in response to specific requests from contracting agencies. These determinations are incorporated into the contract.

3.1 SUBMITTALS

A. Submittal Procedures: Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND SAMPLES.

B. Submittal Drawings:

1. Large scale drawings of reinforcing steel if required.

C. Manufacturer's Literature and Data:

1. Concrete Mix Design.

2. Air entraining admixture, chemical admixtures, and curing compounds.

3. Indicate manufacturer's recommendation for each application.

D. Certificates: Certify products comply with specifications.

a. Each ready mix concrete batch delivered to site.

3.2 DELIVERY

A. Deliver each ready mixed concrete batch with mix certification in duplicate according to ASTM C94/C94M.

3.3 WARRANTY

A. Construction Warranty: FAR clause 52.246 21, "Warranty of Construction."

PART 4 - PRODUCTS

4.1 MATERIALS

A. Portland Cement: ASTM C150/C150M, Type I or II.

B. Pozzolans:

http://www.fedbid.com/

1. Fly Ash: ASTM C618, Class C or F including supplementary optional physical requirements.

2. Slag: ASTM C989.

3. Silica Fume: ASTM C1240.

C. Coarse Aggregate: ASTM C33/C33M.

1. Size 7 for coarse aggregate for applied topping and metal pan stair fill.

2. Size 67 for other applications.

D. Fine Aggregate: ASTM C33/C33M.

E. Lightweight Aggregate for Structural Concrete: ASTM C330/C330M, Table 1.

F. Mixing Water: Fresh, clean, and potable.

G. Air Entraining Admixture: ASTM C260/C260M.

H. Chemical Admixtures: ASTM C494/C494M.

I. Vapor Barrier: ASTM E1745, Class A with a minimum puncture resistance of

2200 g (3000 lbs.); minimum 0.38 mm (15 mil) thick.

J. Reinforcing Steel: ASTM A615/A615M or ASTM A996/A996M, deformed. As required

K. Forms: Wood, plywood, metal, or other materials, approved by Contracting

Officer, of grade or type suitable to obtain type of finish specified.

1. Plywood: Exterior grade, free of defects and patches on contact surface.

2. Lumber: Sound, grade marked, S4S stress graded softwood.

3. Form coating: As recommended by Contractor.

L. Welded Wire Fabric: ASTM A1064 plain; Expansion Joint Filler: ASTM D1751.

M. Sheet Materials for Curing Concrete: ASTM C171.

N. Abrasive Aggregates: Aluminum oxide grains or emery grits.

O. Liquid Densifier/Sealer: 100 percent active colorless aqueous siliconate solution.

P. Grout, Non-Shrinking: Premixed ferrous or nonferrous. Grout to show no settlement or vertical drying shrinkage at 3 days. Compressive strength for grout, at least

18 MPa (2500 psi) at 3 days and 35 MPa (5000 psi) at 28 days.

4.2 ACCESSORIES

A. Bonding Agent: ASTM C 1059/C 1059M, Type II.

B. Structural Adhesive: ASTM C881, 2 component material suitable for use on dry or damp surfaces. Provide material Type, Grade, and Class to suit Project requirements.

C. Water Stops: Rubber base with self-healing properties. Expanding clay based products not acceptable.

D. Weeps: Geotextile type as recommended by Contractor and approved by

Contracting Officer.

4.3 CONCRETE MIXES

A. Design concrete mixes according to ASTM C94/C94M, Option C.

B. Compressive strength at 28 days: minimum 25 MPa (3,000 psi) .

C. Submit mix design and results of compression tests to the Contracting Officer for his evaluation. Identify all materials, including admixtures, making up the concrete.

D. Maximum Slump for Vibrated Concrete: 100 mm (4 inches) tested according to

ASTM C143.

PART 5 – EXECUTION

5.1 MATERIALS AND METHODS

A. Concrete shall not be placed when stormy or inclement weather prevents good workmanship. Adequate equipment shall be provided for heating concrete materials and protecting concrete during freezing or near-freezing weather. All concrete materials and all reinforcement, forms, fillers and ground with which concrete is to come in contact shall be free from frost. Frozen materials or materials containing ice shall not be used.

B. During hot weather, proper attention shall be given to ingredients, production methods, handling, placing protection and curing to prevent excessive concrete temperatures or water evaporation that may impair required strength or serviceability of the member or structure.

C. Curing and protection shall be accomplished by preventing loss of moisture, rapid temperature change, and mechanical injury or injury from rain or flowing water for a period of seven (7) days. Curing shall be started soon after placing and finishing, and when free water has disappeared from the surface of the concrete.

Expansion joints (e.j.) shall be placed at all locations where new paving abuts curbs or other structures, and in spans greater than 40 feet in length. All exterior concrete flat surfaces shall be cured within 12 hours with Kure & Seal or a written approved equal.

5.2 CONCRETE REINFORCEMENT

1. Reinforced concrete work shall comply with building code requirements for reinforced concrete (ACI-318) of American Concrete Institute. Reinforcing material shall be new material conforming to the following:

A. Deformed Steel Bars - ASTM A-305.

B. Billet Steel Bars - ASTM A-15.

5.6 REPAIR CONCRETE STEPS

1. Cut out or otherwise remove all deteriorated concrete.

2. Thoroughly clean area, removing all loose particles. Dampen surface and apply heavy brush or slush coat of Thorite as manufactured by Standard

Dry Wall Products, Inc., or equally prepared concrete patch mix, making certain all pores and voids are filled.

3. Screen off and steel trowel patch so that it is level with surface.

5.7. PATCH CONCRETE INTERIOR AND EXTERIOR

1. Chip out all loose materials and disintegrated concrete on all deteriorated areas of drive. Clean off all oils, grease, dirt, salt deposits, etc.

2. Use prepared commercial cleaner, as set forth above.

3. Flush clean, then patch area with prepared concrete patch compound, following manufacturer’s printed instructions. Do not apply at temperatures below 40° Fahrenheit, or if temperatures are expected to fall below 40° Fahrenheit within 48 hours.

5.8 FORMWORK

A. Installation: Conform to ACI 347. Construct forms to obtain concrete of the shapes, dimensions and profiles indicated, with tight joints.

B. Design and construct forms to prevent bowing out of forms between supports and to be removable without prying against or otherwise damaging fresh concrete.

C. When patching formed concrete, seal form edges against existing surface to prevent leakage; set forms so that patch is flush with adjacent surfaces.

D. Treating and Wetting: Treat or wet concrete contact surfaces:

1. Coat plywood and lumber forms with non-staining form sealer.

2. Wet wood forms thoroughly when they are not treated with form release agent.

3. Prevent water from accumulating and remaining within forms.

4. Clean and coat removable metal forms with light form oil before reinforcement is placed.

5. In hot weather, cool metal forms by thoroughly wetting with water just before placing concrete.

6. Prevent water from accumulating and remaining within forms.

E. Inserts, Sleeves, and Similar Items: Install masonry ties, anchors, inserts, wires, hangers, sleeves, boxes for floor hinges, and other cast in items specified in other

Sections. Place where indicated, square, flush and secured to formwork.

F. Construction Tolerances - General: Install and maintain concrete formwork to assure completion of work within specified tolerances.

G. Adjust or replace completed work exceeding specified tolerances before placing concrete.

5.9 REINFORCEMENT

A. Install concrete reinforcement according to ACI 318 and ACI SP 66.

B. Support and securely tie reinforcing steel to prevent displacement during placing of concrete.

C. Drilling for Dowels in Existing Concrete: Use sharp bits, drill hole slightly oversize, fill with epoxy grout, inset the dowel, and remove excess epoxy.

5.10 VAPOR BARRIER

A. Except where membrane waterproofing is required, place interior concrete slabs on a continuous vapor barrier.

B. Lap joints 150 mm (6 inches) and seal with a compatible pressure sensitive tape.

C. Patch punctures and tears.

5.11 PLACING CONCRETE

A. Remove water from excavations before concrete is placed. Remove hardened concrete, debris and other foreign materials from interior of forms, and from inside of mixing and conveying equipment. Obtain approval from Contracting

Officer's Representative before placing concrete.

B. Install screeds at required elevations for concrete slabs.

C. Roughen and clean free from laitance, foreign matter, and loose particles before placing new concrete on existing concrete.

1. Blow out areas with compressed air and immediately coat contact areas with adhesive in compliance with manufacturer's instructions.

D. Place structural concrete according to ACI 301 and ACI 318.

E. Convey concrete from mixer to final place of deposit by method that will prevent segregation or loss of ingredients. Do not deposit, in Work, concrete that has attained its initial set or has contained its water or cement more than 1 1/2 hours.

Do not allow concrete to drop freely more than 1500 mm (5 feet) in unexposed work nor more than 900 mm (3 feet) in exposed work.

F. Place and consolidate concrete in horizontal layers not exceeding 300 mm (12 inches) in thickness. Consolidate concrete by spading, rodding, and mechanical vibrator. Do not secure vibrator to forms or reinforcement. Continuously vibrate during placement of concrete.

G. Concrete Fill in Stair Tread and Landing Pans: Coat steel with bonding agent and fill pans with concrete. Reinforce with 2 inch by 2 inch by 1.6 mm (0.06 inch) welded wire mesh at midpoint.

H. Hot Weather Concrete Placement: As recommended by ACI 305.1 to prevent adversely affecting properties and serviceability of hardened concrete.

I. Cold Weather Concrete Placement: As recommended by ACI 306.1, to prevent freezing of thin sections less than 300 mm (12 inches) and to permit concrete to gain strength properly.

1. Do not use calcium chloride without written approval from Contracting

Officer's Representative.

5.12 TOLERANCES

A. Slab on Grade Finish Tolerance: Comply with ACI 117, FF number and FL number method.

1. Paragraph 4.8.3, Class A3 mm (1/8 inches) for offset in form work.

2. Table R4.8.4, "Flat" 6 mm (1/4 inch) in 3 m (10 feet) for slabs.

5.13 PROTECTION AND CURING

A. Protect exposed surfaces of concrete from premature drying, wash by rain or running water, wind, mechanical damage, and excessive hot or cold temperatures.

B. Curing Methods: Cure concrete with curing compound using wet method with sheets.

C. Formed Concrete Curing: Wet the tops and exposed portions of formed concrete and keep moist until forms are removed.

1. If forms are removed before 14 days after concrete is cast, install sheet curing materials as specified above.

D. Concrete Flatwork Curing:

1. Install sheet materials according to the manufacturer's instructions.

a. When manufacturer's instructions deviate from specifications, submit proposed resolution for Contracting Officer's

Representative consideration.

5.14 FORM REMOVAL

A. Maintain forms in place until concrete is self-supporting, with construction operation loads.

B. Remove fins, laitance and loose material from concrete surfaces when forms are removed. Repair honeycombs, rock pockets, sand runs, spalls, or otherwise damaged surfaces by patching with the same mix as concrete minus the coarse aggregates.

C. Finish to match adjacent surfaces.

5.15 FINISHES

A. Exterior Locations in Warm climates

1. Float Finish: exterior /ramps, stair treads, and platforms, both equipment pads, and slabs to receive non cementitious materials, except as specified.

a. Screen and float to smooth dense finish.

b. After first floating, while surface is still soft, check surfaces for alignment using straightedge or template. Correct high spots by cutting down with trowel or similar tool. Correct low spots by filling in with material same composition as floor finish. Remove any surface projections on floated finish by rubbing or dry grinding. Refloat slab to uniform sandy texture.

2. Steel Trowel Finish: Applied toppings, concrete surfaces to receive resilient floor covering or carpet, future floor roof and other monolithic concrete floor slabs exposed to view without other finish indicated or specified.

a. Delay final steel troweling to secure smooth, dense surface, usually when surface can no longer be dented by fingers. During final troweling, tilt steel trowel at slight angle and exert heavy pressure on trowel to compact cement paste and form dense, smooth surface.

b. Finished surface: Free from trowel marks. Uniform in texture and appearance.

Exterior locations in cold climates subject to icing.

3. Broom Finish: Finish exterior slabs, ramps, and stair treads with bristle brush moistened with clear water after surfaces have been floated.

4. Finished Slab Flatness (FF) and Levelness (FL):

a. Slab on Grade: Specified overall value FF 25/FL 20. Minimum local value FF 17/FL 15.

b. Test flatness and levelness according to ASTM E1155.

5.16 SURFACE TREATMENTS

A. Mix and apply the following surface treatments according to manufacturer's instructions.

1. When manufacturer's instructions deviate from specifications, submit proposed resolution for Contracting Officer's Representative consideration.

B. Liquid Densifier/Sealer: Use for exposed concrete floors and concrete floors to receive carpeting, except those specified to receive non slip finish.

C. Slip Resistant Finish:

1. Except where safety nosing and tread coverings are shown, apply abrasive aggregate to treads and platforms of concrete steps and stairs, and to surfaces of exterior concrete ramps and platforms.

a. Broadcast aggregate uniformly over concrete surface. Trowel concrete surface to smooth dense finish. After curing, rub treated surface with abrasive brick and water sufficiently to slightly expose abrasive aggregate.

Include the following when placing concrete over existing.

Typically 50 mm (2 inches) minimum.

5.17 APPLIED TOPPING

A. Install concrete topping with thickness and strength shown with only enough water to ensure stiff, workable, plastic mix.

B. Continuously place applied topping until entire area is complete, struck off with straightedge, compact by rolling or tamping, float and steel trowel to hard smooth finish.

5.18 RESURFACING FLOORS

A. Remove existing flooring by abrasive blasting or grinding, in areas to receive resurfacing, to expose existing structural slab. Achieve a surface profile of 2 to 4 according to ICRI 310.2R for the condition found at Site.

B. Prepare exposed structural slab surface by cleaning, wetting, and applying adhesive according to manufacturer's instructions as specified in the flooring section.