VA 07 71 00-2011 ROOF SPECIALTIES.pdf

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1、10-11 07 71 00 - 1 SECTION 07 71 00 ROOF SPECIALTIES SPEC WRITER NOTE: 1. Delete between /_/ if not applicable to project. Also delete any other item or paragraph not applicable in the section and renumber the paragraphs. 2. Include standard manufactured components installed on and in roofing other

2、than mechanical, electrical, and structural items. PART 1 - GENERAL 1.1 DESCRIPTION This section specifies roof hatches; equipment supports; gravity ventilators; and metal grating roof walkway system. 1.2 RELATED WORK A. Color and texture of finish: Section 09 06 00, SCHEDULE FOR FINISHES.Sealant ma

3、terial and installation: Section 07 92 00, JOINT SEALANTS. C. General insulation: Section 07 21 13, THERMAL INSULATION. Rigid insulations for roofing: Section 07 22 00, ROOF AND DECK INSULATION 1.3 QUALITY CONTROL A. All roof accessories shall be the products of manufacturers regularly engaged in pr

4、oducing the kinds of products specified. B. Each accessory type shall be the same and be made by the same manufacturer. C. Each accessory shall be completely assembled to the greatest extent possible before delivery to the site. 1.4 SUBMITTALS A. Submit in accordance with Section 01 33 23, SHOP DRAW

5、INGS, PRODUCT DATA, AND SAMPLES. B. Samples: Representative sample panel of color anodized aluminum not less than 100 mm X 100 mm (four by four inches), except extrusions shall be a width not less than section to be used. Sample shall show coating with integral color and texture and shall include ma

6、nufacturers identifying label. C. Shop Drawings: Each item specified showing design, details of construction, installation and fastenings. D. Manufacturers Literature and Data: Each item specified. E. Certificates: Stating that aluminum has been given specified thickness of anodizing. Provided by IH

7、SNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-10-11 07 71 00 - 2 1.5 APPLICABLE PUBLICATIONS A. The publications listed below form a part of this specification to the extend referenced. The publications are referenced in the text by the basic designation only. B

8、. Federal Specifications (Fed. Spec.): RR-G-1602D . Grating, Metal, Other Than Bar Type (Floor, Except for Naval Vessels) C. American Society for Testing and Material (ASTM): A653/A653M-10 Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) By the Hot-Dip Process B209/209M

9、-07 . Aluminum and Aluminum Alloy-Sheet and Plate B221/221M-08 . Aluminum-Alloy Extruded Bars, Rods, Wire, Shapes, and Tubes C612-10 Mineral Fiber Block and Board Thermal Insulation D1187-97(R2002) Asphalt-Base Emulsions for Use as Protective Coatings for Metal D. National Association of Architectur

10、al Metal Manufacturers (NAAMM): AMP 500 Series . Metal Finishes Manual E. American Architectural Manufacturers Association (AAMA): 2605-11 High Performance Organic Coatings on Architectural Extrusions and Panels. PART 2 - PRODUCTS SPEC WRITER NOTE: Update materials requirements to agree with applica

11、ble requirements (types, grades, classes) specified in the referenced Applicable Publications. 2.1 MATERIALS A. Aluminum, Extruded: ASTM B221/B221M. B. Aluminum Sheet: ASTM B209/B209M. C. Galvanized Sheet Steel: ASTM A526/A526M; G-90 coating. D. Metal Grating for Roof Walkway: Fed. Spec. RR-G-1602.

12、2.2 ROOF HATCH (SCUTTLE) A. Fabricate from aluminum with mill finish. B. Curb and Cover: 1. Exterior facing: Minimum 2.3 mm (0.09 inch) thick sheet aluminum. 2. Interior facing: Minimum 1 mm (0.04 inch) thick sheet aluminum. 3. Minimum of 25 mm (one inch) thick mineral fiber insulation between facin

13、gs of cover and over exterior face of curb. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-10-11 07 71 00 - 3 4. Form exterior curb facing with an integral three inch wide roof flange and cap flashing minimum 2.3 mm (0.09 inch) thick sheet aluminum.

14、 SPEC WRITER NOTE: Do not use less than 300 mm (12 inch high) curb above roof surface. Where access is to service roof equipment comply with OSHA for stair size, roof opening 750 mm X 2400 mm (2-6“ by 80“). Show opening size on the drawings. 5. Make curb / 300 mm (12 inches) / /_/. 6. Form cover to

15、lap curb and cap flashing. 7. Size opening as shown. C. Hardware: 1. Provide spring snap latch with inside and outside operating handles and padlock hasp on inside. Provide two snap latches when hinge side is over 2100 mm (7 feet) long. 2. Provide pintle hinges. 3. Provide automatic hold open and op

16、erating arm with enclosed torsion or compression spring lifting mechanism. 4. Covers shall automatically lock in the open position at not less than 70 degrees. 5. Provide weatherstripping at cover closure. 6. Galvanize all hardware items. D. Assembly: 1. Completely shop assemble roof scuttle. 2. Ful

17、ly weld all joints exposed to the weather and built into the roofing. 3. Finish weld smooth where exposed. 4. Operation with minimum force to open and close. SPEC WRITER NOTE: Use following article for roof mounted equipment items other than mechanical equipment items. Prefabricated roof curbs for f

18、ans, ventilators and other roof mounted mechanical items are specified in Mechanical Specifications. 2.3 EQUIPMENT SUPPORTS A. Fabricate equipment supports from 1.3 mm (0.0516 inch) thick galvanized steel. B. Form exterior curb with integral base, / and deck closures for curbs installed on steel dec

19、king. / C. Use galvanized steel liners for curbs having inside dimension over 305 mm (12 inches). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-10-11 07 71 00 - 4 D. Fabricate curb with a minimum height of 200 mm (8 inches) above roof surface. E. A

20、ttach preservative treated wood nailers to top of curb. Use 50 mm (2 inch) by 50 mm (2 inch) minimum nominal size on curb with openings and 50 mm (2 inch) thick, width of curb up to 300 mm (12 inches) on equipment support curbs. F. Make size of supports suit size of equipment furnished, with height

21、as shown on drawings, but not less than 200 mm (8 inches) above roof surface. SPEC WRITER NOTE: Use following article for gravity type ventilators not connected to ducts. All ventilators, mechanical and gravity, that are connected to ducts are specified in Mechanical Specifications. 2.4 LOW SILHOUET

22、TE GRAVITY VENTILATORS A. Fabricate base of 1 mm (0.04 inch) thick aluminum, and vent of 0.8 mm (0.032 inch) thick aluminum. Height not to exceed 300 mm (12 inches) above top of roof curb. Design ventilators to withstand 137 Km (85 miles) per hour wind velocity. Provide ventilators with a removable

23、18 by 18 mesh aluminum wire cloth insect screen. B. Construct damper of the same material as the ventilator and design to completely close opening or remain wide open. Hold damper in closed position by a brass chain and catch. Extend chains 300 mm (12 inches) below and engage catch when damper is cl

24、osed. 2.5 METAL GRATING ROOF WALKWAY SYSTEM A. Provide metal grating roof walkway system consisting of prefabricated pans, of 14 gauge, galvanized (G-90 Coating) steel grating with slip resistant surface. B. Grating units shall be in 600 mm (two foot) widths and in 3000 to 3600 mm (10 to 12 foot lon

25、g) sections as required. C. Provide complete with support framing, brackets, connectors, nosings and other accessories as required for complete roof walkway system. Include support stands at minimum 1500 mm (five feet) on center to hold planks a minimum of nine inches above roof surface. D. Include

26、step units, nosings framing and connectors to provide changes in elevation as required. E. Provide neoprene rubber pads having a shore A hardness of 80 to 90-Durometer under each support, or bearing surface. . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from

27、IHS-,-,-10-11 07 71 00 - 5 2.6 FINISH A. In accordance with NAAMM Amp 500 Series. B. Aluminum, Mill Finish: AA-MIX, as fabricated. C. Aluminum, Clear Finish: AA-C22A41 medium matte, clear anodic coating, / Class 1, Architectural, 0.7 mils thick. / Class II, Architectural, 0.4 mils thick. / D. Alumin

28、um Colored Finish: AA-C22A42 (anodized or AA0C22A44 (electrolytically deposited metallic compound) medium matte, integrally colored coating, / Class 1, Architectural, 0.7 mils thick /. Class II, Architectural, 0.4 mils thick. Dyes will not be accepted. E. Fluorocarbon Finish: AAMA 2605.2 high perfor

29、mance organic coating. SPEC WRITER NOTE: Show anchorage location for items specified on drawings. PART 3 - EXECUTION 3.1 INSTALLATION A. Install roof specialties where shown. B. Secure with fasteners in accordance with manufactures printed installation instructions and approved shop drawings unless

30、shown otherwise. C. Coordinate to install insulation where shown; see Section 07 21 13, THERMAL INSULATION and Section 07 22 00, ROOF AND DECK INSULATION. D. Comply with section 07 92 00, JOINT SEALANTS to install sealants where manufactures installation instructions require sealant. E. Coordinate w

31、ith roofing work for installation of items in sequence to prevent water infiltration. b. After completion of base flashing bend down cap flashing flange and secure to blocking with screws. c. Install expansion joint cover with 6 mm (1/4 inch) wide space at end joints and tension bars at 600 mm (24 i

32、nches) on center. d. Install cover plates with formed aluminum flashing concealed and centered on joint. Flashing to lap cover not less than 100 mm (4 inches). J. Equipment Supports: Do not anchor to insulating concrete or metal deck. Anchor only to building structure as per manufacturers recommenda

33、tions. 3.2 PROTECTION OF ALUMINUM A. Provide protection for aluminum against galvanic action wherever dissimilar materials are in contact, by painting the contact surfaces of the dissimilar material with two coats of asphalt coating (complete coverage), or by separating the contact surfaces with a p

34、reformed neoprene tape having pressure sensitive adhesive coating on side. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-10-11 07 71 00 - 6 B. Paint aluminum in contact with wood, concrete and masonry, or other absorptive materials, that may become

35、 repeatedly wet, with two coats of asphalt coating. 3.3 ADJUSTING A. Adjust roof hatch hardware to operate freely and so that cover will operate without binding, close tightly at perimeter, and latch securely. 3.4 PROTECTION Protect roof accessories from damage during installation and after completion of the work from subsequent construction. - - - E N D - - - Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-