B08_Attachment_2_SOW_WARC_Roof_Replacement.docx

PERFORMANCE-BASED WORK STATEMENT

WARC Main Building and Smith Annex Building Roof Replacement

I. GENERAL INFORMATION

A. Introduction Our mission statement at the USGS Wetland and Aquatic Research Center (WARC) is to provide USGS science to Florida, the Southeastern States, the U.S. Caribbean, and elsewhere in the world. We are also leaders in seeking new and innovative ways to meet the critical need for sound, objective scientific information that can be applied to issues of local to international concern.

B. Background

1. The Main Building was constructed in the early 1980s. This building is a two-story building and is approximately 21,000 sf and holds research laboratories and office space. The building was constructed using CMU block and has structural concrete decking as a roof base. The 2nd floor of the building still has the original built up roofing but in 2009 had a 2” polyurethane foam layer applied over existing roof.

2. The South Modular Building is approximately 15 years old. This building is a single story with a low-slope roof system. The building has an existing white, fully adhered, 40 mL thickness, Thermoplastic Polyolefin (TPO) Membrane Roof system.

C. Scope

The purpose of this requirement is to remove and replace the roof of the second story portion of the Main Research Building (approximately 8,841 sf) as well as to remove and replace roofing on the South Modular Building (approximately 3,920 sf).

II. WORK REQUIREMENTS

A. Technical Requirements for Main Building 2nd story roof work.

1. Remove and dispose foam roof system and original built-up roof (~8,841 sf) down to original 6” polyurethane lightweight insulation to include all flashings. Original roofing details are found in figure 1.

2. Remove and replace 4 JOSAM #21024 cast iron roof drains.

3. Fully adhere one (1) layer of 1.5”/R-8.6 ISO insulation directly to lightweight insulating concrete.

4. Fully adhere a ¼” thick DensDeck Prime cover board directly to the ISO insulation.

5. Fully adhere 60 ml white, Thermoplastic Polyolefin (TPO) Membrane Roof system to the Primed Cover Board.

6. Flash all roof penetrations.

7. TPO base flashing at all walls and curbs.

8. Install new drip edge flashings at outside edge of all parapet walls (24 gauge steel).

9. New roof should have the GAF Diamond Pledge 20-year warranty covering material, labor, and workmanship.

10. Special care should be taken in removal of existing material as this is an active research building surrounded by other research structures.

B. Technical Requirement for South Modular Building work.

1. Remove and dispose of all existing single-ply down to existing insulation.

2. Remove and replace decayed roof sheathing as needed, up to 1,000 SF maximum and resecure existing decking as needed.

3. Mechanically fasten 60-mil white TPO thru the existing insulation and into the plywood deck.

4. TPO flashing all roof penetrations, walls, and curbs.

5. Replace cap flashings at parapet walls. (24 Gauge Steel)

6. Remove and replace all existing roof drains.

7. New roof should have the GAF Diamond Pledge 20-year warranty covering material, labor, and workmanship.

D. Criteria for acceptance of Product or Service:

1. Job acceptance will be based on completion of technical requirements stated in this document.

E. CODES, STANDARDS, AND DEPARTMENTAL PUBLICATIONS. The following manuals, handbooks, industry standards and codes are incorporated by reference.

ASHRAE 110 – Fume Hood Standards OSHA 29 CFR 1910 – Laboratory Flooring Standards Facilities Standards for two public buildings service - GSA PBS-Q100.1 Uniform Federal Accessibility Standards National Electrical Code ICBO Uniform Building Code NFPA, National Fire Codes

Uniform Plumbing Code Uniform Mechanical Code Underwriters Laboratories Fire Resistance Directory Underwriters Laboratories Building Materials Directory

III. SUPPORTING INFORMATION

A. Place of Performance:

Wetland and Aquatic Research Center 7920 NW 71st Street Gainesville, Florida 32653

B. Period of Performance

Contractor will begin work within 15 days of Notice to Proceed and will complete project within 120 calendar days of project initiation.

C. Government Furnished Property (GFP): NONE

D. Special Considerations.

1. Key personnel qualifications:

A. All work under this contract must be performed by personnel who are experienced and qualified to provide professional services. Contractor will be certified to install TPO roofing systems.

2. Data Rights, Safety, and Environment:

A. Safety Requirements: Contractor must perform this contract in a safe manner, observing any necessary safety precautions. The contractor will promptly correct any condition, which in the opinion of the Contracting Officer, or his authorized representative, endangers the safety of personnel and/or property during the performance of this contract. Failure to observe this requirement will result in contract termination, with the Contractor liable for any such damages that may occur. The Contractor is obligated to perform a thorough inspection each working day of all areas to assure that all necessary safeguards relative to safety and fire hazards are being taken. Special instructions on biological hazardous areas must always be complied with.

3. Security/Privacy issues:

A. Facilities/Storage Space: Limited facilities and storage spaces will be made available to the contractor without cost to him for new equipment waiting to be installed. Facilities and spaces assigned to the Contractor will be maintained in a clean and sanitary manner. Light, heat, electricity, water, and telephone service as required for the performance of this contract will be made available to the Contractor. The Contracting Officer or his designated representative will have access to the facilities, spaces, and equipment at any time for inspection or for other purposes as required. The areas assigned will be returned at the completion of this contract in the same condition than existed at the beginning of this contract. These facilities will be available for the joint use of the Contractor and Center staff.

B. Damage Reporting: In all instances where Government property or equipment is damaged, a full report of the fact and extent of such damage will be submitted in writing to the Contracting Officer or his authorized representative within twenty-four (24) hours.

Figure 1. Main Building roof drain detail.

Figure 2. Site Overview

South Modular Main Building 2nd Story image1.jpeg image2.jpeg