sSOW FOR WELDED ALUMINUM OXIDE EXTRUDED LAMINATED FLOOR IN BLDG. 308C INSTALLATION.doc

UNITED STATES DEPARTMENT OF AGRICULTURE

BELTSVILLE AGRICULTURAL RESEARCH CENTER

FACILITIES SERVICE

ENGINEERING AND CONSTRUCTION BRANCH

BUILDING 426A, BARC-EAST

10300 BALTIMORE AVENUE

BELTSVILLE, MARYLAND 20705-2350

STATEMENT OF WORK AND SPECIFICATION

TO

SUPPLY MATEERIAL AND REPAIR/REPLACE THE WELDED ALUMINUM OXIDE EXTRUDED LAMINATED FLOORING SYSTEM AT BLDG. #308C

BELTSVILLE AGRICULTURAL RESEARCH CENTER

BELTSVILLE, MARYLAND

March 2021

STATEMENT OF WORK

PROJECT NUMBER:

PROJECT LOCATION: Beltsville Agricultural Research Center (BARC), Bldg. #308C, Beltsville, Maryland DESCRIPTION OF WORK: To repair/replace the existing Welded Aluminum Oxide Extruded Vinyl Laminated Floor in Bldg. 308C.

In accordance with this contract, the contractor shall provide all labor, material, equipment, and transportation to include all accessories and incidentals necessary to complete this job to Government requirements. Should the contractor encounter any material that in his judgment may contain asbestos, he must stop work immediately and notify the Contracting Officer within 24 hours.

Prior to commencing work, the contractor is required to obtain Construction Authorization, vehicle permits, and identification badges. These can be obtained from the Engineering and Construction Office, Building 426A, BARC-East, Beltsville, Maryland. Vehicle permits and identification badges shall be returned to the Government prior to the final payment being issued.

NOTE: THE CONTRACTOR SHALL NOTIFY THE GOVERNMENT TECHNICAL REPRESENTATIVE ON 301-504-8434 at least 24 HOURS BEFORE ANY WORK IS SCHEDULED TO START. All contractor's work shall be monitored and inspected by BARC personnel and done in accordance with the Statement Of Work and attached drawings, specifications, graphics, BARC Special Conditions, and performed in accordance with all applicable local building codes, Construction Standards and Codes, Americans with Disabilities Act, local and State traffic codes, Maryland Department of Environment, the Maryland Highway Specifications, and the Maryland Department of the Environment Regulations concerning Clean Water Act.

Scope of Work:

The contractor shall provide all labor, materials, supplies, specialized equipment/tools, transportation and supervision to repair/replace the existing Welded Aluminum Oxide Extruded Laminated Floor in Bldg. 308C

A construction work schedule shall be provided by the contractor prior to work start up.

The contractor shall perform the following work, but not limited to:

A. To repair the existing Welded Aluminum Oxide Extruded Laminated Floor in Bldg. 308C.

1. Mobilization:

Mobilize all necessary personnel, specialized tools and equipment, approved materials, Dumpsters, safety items and all other necessities to initiate a work start up after receiving the notice to proceed.

Contractor shall stage ladders and scaffolding as to allow free access to main front entrance to building at all times. All necessary precautions shall be taken to provide safe passage at the point of entrance/exit (contractor may be required to construct temporary safety passage to catch debris that could fall on individuals entering and exiting the building).

The contractor shall have delivered, handling and storage of all materials by the manufacture’s specifications.

Pre-Installation conference shall be required with Prime Contractor, Owners Representative, Flooring Contractor and/or Manufacturer's Representative to review the following: Evaluate slab conditions and extent of repairs necessary for Contractor to begin normal preparation and installation of seamless flooring.

Evaluate detail conditions at all penetrations, terminations, perimeter and drain locations. Detail problems shall be documented and resolved prior to floor installation.

Test concrete sub-floors using the Calcium Chloride test method to verify that slab moisture vapor transmission rate does not exceed manufacturer’s recommendations.

The Flooring Contractor shall provide an add option cost as part of the bid for the treatment of substrate moisture vapor transmission in the event the substrate exceeds manufacturers recommendations. Slab testing shall be performed immediately prior to floor installation so as to achieve the nearest real time conditions. Any slab developing readings of 3 pounds of water per 24 hours per 1000 square feet or greater by ASTM F-1869-98 shall receive Integral Concrete Waterproofing which shall be compatible with flooring and approved by the Flooring Manufacturer. Waterproofing shall be installed by a contractor that is certified by the manufacturer of the waterproofing material. The waterproofing system must have a materials and labor warranty of at least 5 years against the loss of bond due to substrate moisture vapor transmission if initial readings are above 3 pounds. The moisture proofing product shall be certified as compatible with the flooring material manufacturer.

Review job site conditions, including temperature, power, and lighting. Such problems shall be documented and resolved prior to floor installation.

Protect surrounding substrate and surfaces as well as in place equipment from damage during surface preparation and system installation.

All drains must be working and set at the proper elevation.

Job area shall be free of other trades during floor installation, and for a period of 48 hours upon completion.

The Prime Contractor shall provide adequate ventilation by use of fans or other devices.

The Prime Contractor shall maintain lighting at final end use levels during the installation.

The Prime Contractor shall ensure that leaks from pipes and other sources are corrected prior to floor installation.

The Prime Contractor shall provide minimum substrate and ambient temperature of 70(F and relative humidity below 80% during floor installation and until final acceptance.

2. Demolition/Surface Preparation:

The Prime Contractor shall for the existing floor: Prepare concrete to “open” surface pores by means of vacuum-blasting, removing contaminants and bond breaking substances, including but not limited to dust, latencies, curing compounds, coatings, sealers, oil and grease. In circumstances approved by the manufacturer, mechanical abrasion by means such as terrazzo grinding will be acceptable. Oil and grease not removed by vacuum-blasting shall be chemically removed. Mechanically remove delaminated or deteriorated concrete by scabbing or chipping hammers. Areas to be patched shall be saw cut to minimum 1/2” depth at perimeters and keyed to existing concrete. (For thorough instructions regarding preparation of concrete and non-concrete substrate, consult STI “Instruction for Surface Preparations”.)

The Prime Contractor for Renovation Projects Where an Original Resinous Floor Remains: Assure that the existing floor is bound tightly to the substrate by performing preliminary “pull tests”. Assure that the existing floor and substrate are dry and exhibit no signs of previous moisture problems. Remove loose and deteriorating flooring to expose sound substrate and patch back to original elevation prior to prep of the remaining surface. Thoroughly prepare the remaining floor using terrazzo grinding or another prep procedure approved by the manufacturer.

Safety flooring shall be installed over subfloors conforming to ASTM F710 for concrete and other monolithic floors or ASTM F1482 for wood subfloors.

B.

Always conduct moisture tests per ASTM F-2170 on all concrete slabs regardless of age or grade level. ASTM F-2170 Relative Humidity (RH) test results must not exceed 90%.

C.

Do not proceed with work until results of moisture condition tests are acceptable.

D. When patching, a moisture tolerant patching compound must always be used.

The contractor shall remove and dispose of Government property, all items indicated as TO BE REMOVED. Such items become the property of the contractor and shall be loaded, transported per applicable DOT regulations, and disposed of at approved landfills.

3. Quality Assurance:

Manufacturer: The Sub Contractor shall obtain all manufacturer’s flooring materials required for this Requirement from a single source.

The Sub Contractor: Shall have a minimum of 5 years’ experience in the installation of seamless flooring and be approved in writing by the specified manufacturer.

Floor Thickness Verification: At the EPM/COR direction and under his supervision the Prime Contractor shall take 3 random cores at Bldg. 308C, through system to substrate, prior to applying final seal coat, to verify proper floor thickness. Repair cored areas to match surrounding surface prior to applying final seal coat. Remove and replace areas with less than specified thickness, in a manner that does not affect aesthetics or integrity of overall floor.

A. ASTM D 2047, Standard Test Method for Static Coefficient of Friction of Polish-Coated Floor Surfaces as Measured by the James Machine.

B. ASTM E 648/NFPA 253, Standard Test Method for Critical Radiant Flux of Floor-Covering Systems Using a Radiant Heat Energy Source.

C. ASTM E662, Standard Test Method for Specific Optical Density of Smoke Generated by Solid Materials.

D. ASTM F710, Standard Practice for Preparing Concrete Floors to Receive Resilient Flooring.

E. ASTM F 970, Standard Test Method for Static Load Limit.

F. ASTM F1482, Standard Guide to Wood Underlayment Products Available for Use Under Resilient Flooring.

G. ASTM F1303, Standard Specification for Sheet Vinyl Floor Covering with Backing.

H. ASTM F2170, Standard Test Method for Determining Relative Humidity in Concrete Floor Slabs Using in situ Probes.

I. (RFCI) Resilient Floor Covering Institute

J. RFCI Standard Slab Moisture Test Method (Calcium Chloride Method)

K. Installer Qualifications: Installer experienced in performing work of this section who has specialized in installation of work similar to that required for this project.

1. Training: Installer who has attended an Altro flooring installation training clinic.

1. Regulatory Requirements: Provide slip resistant sheet vinyl safety flooring in compliance with the following:

1.

Americans with Disabilities Act Architectural Guidelines (ADAAG).

2.

Occupational Safety & Health Administration (OSHA).

L. Mock-ups: Install at project site a job mock-up using acceptable products and manufacturer approved installation methods, including concrete substrate testing.

1.

Maintenance: Maintain mock-up during construction for workmanship comparison; remove and legally dispose of mock-up when no longer required.

2.

Incorporation: Mock-up may be incorporated into final construction upon Owner’s approval.

M. Pre-installation Meeting: Conduct pre-installation meeting to verify project requirements, substrate conditions, manufacturer’s installation instructions, manufacturer’s warranty requirements, and installer qualifications.

4. Installation:

The contractor shall provide boom lifts, scaffolding, ladders, scaffolding systems, etc. that is required to facilitate a safe and productive working environment.

The Prime Contractor shall supply and have install by an experienced Altro Welded Aluminum Oxide Extruded Vinyl Laminated Floor installer or approved equal by the COR. System shall have a mild skid resistant texture. All epoxy resins shall be 100% solids for low odor and job-site safety during installation. Aggregate to be decorative ceramic coated quartz blends to be selected by the EPM/COR. System shall have the following properties:

A.

Marine 20 Installation: Install Altro safety flooring in accordance with the current posted Altro Installation Practices and Quick Facts Guide. All Seams shall be heat welded with Altro Weldrod™ only. Failure to install Altro safety flooring in accordance with recommended procedures will void the Altro Limited Product Warranty.

B.

Coved Installation: Where Altro safety flooring is coved up wall surfaces and other abutments, installation shall be in accordance with Altro safety flooring Installation Practices using the following accessories:

1. At standard wall finishes: Use Altro C7 vinyl cap strip to accommodate sheet vinyl to a height as indicated; adhere with contact tape.

1. At ceramic tile, Altro Whiterock semi-rigid wall cladding or FRP paneling: Use Altro C8 Vinyl Captile Strip or C4 cap, respectively.

1. At 0.75" (19.1 mm) radius coving at juncture of vertical and horizontal surfaces: Use Altro Vinyl Cove Former 20R: install with contact tape.

1. At 1.5" (38 mm) radius coving at juncture of vertical and horizontal surfaces: Use Altro Vinyl Cove Former 38R: install with contact tape.

1. Top set cove base: Install in accordance with manufacturer’s instructions.

The prime Contractor shall apply new flooring components required for the system in accordance with the statements in System Overview above and handle materials per manufacturer’s installation instructions, including mixing and application. Terminate at edge of expansion joints, or as designated by Design Professional. Install a 4” integral cove base on walls unless otherwise indicated on drawings.

The prime Contractor shall cure resinous materials in compliance with manufacturer’s directions.

The Prime Contractor shall cleanup work area, removing all equipment, materials and trash.

The Prime Contractor shall provide temporary protection from construction traffic and other trades prior to final acceptance by the owner.

The Prime Contractor shall make sure that the Integral Concrete Waterproofing (ICW) done as follows: In accordance with Job Site Conditions Section 1.08, A, 3) test all concrete slabs scheduled to receive seamless flooring using the Calcium Chloride test method (ASTM F 1869-98) to determine if moisture vapor transmission rates are within limits acceptable to the manufacturer.

5. Delivery, Handling and Storage:

Deliver materials in manufacturer's undamaged containers, clearly marked with the following:

1. Product Name

2. Manufacturer's Name

3. Resin or Hardener Designation

4. Mix Ratio of Resin and Hardener

Handle materials in a safe and proper manner to avoid damage or spill.

Inspect direct jobsite deliveries to verify correct material and quantities are received in good condition.

Replace, at no cost to the owner, materials that are found to be defective in manufacturing or damaged in transit, handling or storage.

Store materials per manufacturer's instructions and as follows.

1. Seals and labels shall be intact and legible.

2. Temperature of storage area shall be maintained between 60(F and 80(F.

3. Do not use materials which have been stored for a longer period of time than the manufacturer's maximum recommended shelf life.

6. Performance Requirements and Warranty:

The Prime Contractor shall provide Manufacturer's standard single source warranty in accordance with the manufacturer's written warranty on seamless flooring for period of two years after installation, warranting against loss of bond and wear through to concrete substrate (through normal wear and use) exclusive of substrate moisture related problems. Warranty shall be single source from the manufacturer, including material and labor.

7. Submittals:

The Prime Contractor shall submit to the EPM/COR three 12" X 12" system samples with the bid for purposes of chemical resistance testing. The end user has the option to conduct on site chemical resistance testing “in their hands” to assure that the submitted system is acceptable for use in their environment. The end user reserves the right to refuse any bidder whose samples do not meet with their approvals as a result of these tests.

The Prime Contractor shall submit to the EPM/COR the Manufacturer's standard color charts for color selection for color selection by the EPM/COR.

The Prime Contractor shall submit to the EPM/COR a Site-Specific Safety Plan.

B. General:

1. Field Verification: It is the responsibility of the contractor to field verify all measurements, quantities and field conditions prior to bidding and commencing work.

2. SDS Data: Provide information on MSDA data on all chemicals and materials to be used.

3. Staging: All equipment, supplies and materials for this contract shall be stored in the work area at the contractor’s risk.

The buildings and grounds at BARC will be secured at the end of each day by BARC Security. The security at BARC is marginal, therefore, BARC is not responsible for any of the contractor's stored material, equipment, either inside or outside the building at any time.

4. Scheduling: The total contract period shall be 21 calendar days from receipt of Notice to Proceed. A period of 5 calendar days shall be allotted for the submittal, review, resubmittal process. The work on-site shall be limited to one sixteen (16) calendar day period. The final inspection shall be scheduled a maximum of 18 calendar days from receipt of Notice to Proceed, leaving 3 days for punchlist remedies. The contractor shall submit a copy of his proposed schedule to the COR for approval.

5. Submittals: The contractor shall submit the manufacturer’s technical data sheets, shop drawings and other Submittals listed above within 7 calendar days of receipt of Notice to Proceed. Each submittal shall be attached to a Submittal

Transmittal Form (enclosed), signed by the Contractor, and delivered to the Contracting Officer’s Technical Representative. A copy of just the transmittal form shall be emailed to the Contracting Officer. One copy shall be submitted to the Contracting Officer. Provide 6 copies of each material submittal.

6. Coordination: The contractor shall coordinate with the COR, with adequate advance notice, all work which will require an inconvenience or work stoppage to Government personnel due to noise, dust, extreme temperatures or interruption in utilities. The contractor shall provide dust protection as required to ensure the delicate scientific equipment housed in this building is not damaged.

7. Guaranty and Warranty: All contracted work shall be guaranteed by the contractor, as stated above under Performance Requirements and Warranty, from the date final acceptance against defective materials, design and workmanship. Upon receipt, of notice from the Government of failure of material of the guaranteed roofing and gutter system during the warranty period, the affected material or system shall be replaced within 48 hours with new materials and labor at the expense of the contractor the first year. ALL WARRANTIES SHALL BE TURNED OVER TO THE COTR AND

CONTRACTING OFFICER PRIOR TO FINAL INVOICING

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