Building1016_Part3-Ch6-B30-Revised.pdf

Repair Building Envelope and Interior Finishes, Building 1016 WO # N40085-19-F-6948 Building 1016, Cherry Point, North Carolina

PART 3 - CHAPTER 6 - Page 499 6/12/2020

B30 ROOFING

B30 GENERAL SYSTEM DESCRIPTION

Provide watertight roof systems compatible with the facility function, construction, and service conditions. Provide complete roof system design and construction services for the entire new facility roof system, including all ancillary and incidental work necessary for a complete, new, watertight roof system installation.

Submittal Requirements: Components of a minimum roof submittal include the roof plan, method of drainage, standard details and details unique to the project, wind load calculations and requirements.

Provide a Pre-Design Roofing Conference (if required in RFP Part 4) and

Pre-Roofing Conference to assure roof design and construction is properly coordinated before construction begins.

Built-in gutter systems where drainage passes through an interior space or is concealed in the exterior cavity wall is prohibited.

Refer to Unified Facilities Criteria (UFC) 3-110-03, Roofing, and UFC 3-

101-01, Architecture, for additional roofing requirements.

B3010 ROOF COVERINGS

B301002 LOW SLOPE ROOFING SYSTEMS

Wind Uplift - Provide a complete roof covering assembly rated Class 1-

135 or appropriate in accordance with Factory Mutual (FM) P7825, capable of withstanding an uplift pressure of 135pounds per square foot (with a safety factor of 2), and FM I-49 for perimeter and flashing attachment.

Fire Safety - Provide a complete roof covering assembly:

1. Rated Class Ain accordance with ASTM E 108orFM 4470orUL 790 and

2. Listed as part of Fire-Classified roof deck construction in UL Roofing

Materials and Systems Directory (RMSD) or Class I roof deck construction in FM P7825c.

Low slope roofing systems that are acceptable include three-ply modified bitumen roofing.

Provide polyester reinforced cap sheet on Modified Bitumen roofs expected to experience high levels of traffic, on roofs with congested equipment, where equipment is expected to receive regular service or high maintenance, and where other service conditions warrant.

Cool Roof - Meet the American Society of Heating, Refrigerating, and Air-

Conditioning Engineers (ASHRAE) 90.1 Chapter 5 values for cool roofing. If a cool roof is not selected in zones 1-3, meet one of the exception requirements listed in ASHRAE 90.1 Chapter 5 or provide thermal insulation above the deck with an R value of 33 or greater.

Repair Building Envelope and Interior Finishes, Building 1016 WO # N40085-19-F-6948 Building 1016, Cherry Point, North Carolina

PART 3 - CHAPTER 6 - Page 500 6/12/2020

B301003 ROOF INSULATION AND FILL

Provide roof insulation values no less than in accordance with UFC 1-200-

02, High Performance and Sustainable Building Requirements and UFC 3-110-

03, Roofing.

For fastening roof insulation on low-slope membrane roofs, place fasteners to withstand and obtain an uplift pressure of 130 pounds per square foot

(with a safety factor of 2 in the field of the roof and FM Loss Prevention

Data Sheets (LPDS) 1-49 for perimeter component and flashing attachment.

B301004 FLASHINGS AND TRIM

Flashing and sheet metal work includes scuppers, splash pans, and sheet metal roofing. Flashings must be Pre-Finished material to match roof panels. Aluminum. Finish must be baked-on factory applied color coating of polyvinylidene fluoride (PVF2) or other equivalent fluorocarbon coating with a minimum thickness of 0.8 to 1.3 mils.

B301005 GUTTERS AND DOWNSPOUTS

Provide gutters and downspouts compatible with roofing material and finish.

Concealed (interior) gutters and downspouts are prohibited.

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