VA 07 60 00-2010 FLASHING AND SHEET METAL.pdf

1、10-10 07 60 00 - 1 SECTION 07 60 00 FLASHING AND SHEET METAL SPEC WRITER NOTES: 1. Delete or edit text in if not applicable to project. Also delete any other paragraph not applicable in the section and renumber the paragraphs. 2. This section requires close coordination with roofing and masonry sect

2、ions for flashing installed by other trades and for flashings integral with manufactured metal roofing/wall systems where matching finish is required of the same material. 3. Coordinate with drawing terminology for correct and uniform nomenclature. 4. Follow the recommendations of the National Roofi

3、ng Contractors Association “Roofing and Waterproofing Manual“ for design criteria. 5. Modify this section to address reroofing of existing roofing system. Coordinate with Section 07 01 50.19 PREPARATION FOR REROOFING for reroofing of existing facilities. PART 1 - GENERAL 1.1 DESCRIPTION Formed sheet

4、 metal work for wall and roof flashing, copings, roof edge metal, fasciae, drainage specialties, and formed expansion joint covers are specified in this section. 1.2 RELATED WORK SPEC WRITER NOTE: Edit Related Work to reflect other sections relating directly to this section or referenced in this sec

5、tion. A. Manufactured flashing, copings, roof edge metal, and fasciae: Section 07 71 00 ROOF SPECIALTIES. B. Membrane base flashings and stripping: /Section 07 51 00, BUILT-UP BITUMINOUS ROOFING/ /Section 07 52 16 MODIFIED BITUMINOUS MEMBRANE ROOFING/. C. Flashing components of factory finished roof

6、ing and wall systems: Division 07 roofing and wall system sections. D. Joint Sealants: Section 07 92 00, JOINT SEALANTS. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-10-10 07 60 00 - 2 E. Color of factory coated exterior architectural metal and an

7、odized aluminum items: Section 09 06 00, SCHEDULE FOR FINISHES. F. Integral flashing components of manufactured roof specialties and accessories or equipment: /Section 07 71 00, ROOF SPECIALTIES/ /Section 07 72 00, ROOF ACCESSORIES/, Division 22, PLUMBING sections and Division 23 HVAC sections. G. P

8、aint materials and application: Section 09 91 00, PAINTING. H. Flashing and sheet metal in connection with prefabricated metal buildings: Section 13 34 19, METAL BUILDING SYSTEMS. I. Flashing of Roof Drains: Section 22 14 00, FACILITY STORM DRAINAGE . 1.3 APPLICABLE PUBLICATIONS SPEC WRITER NOTES: 1

9、. Update applicable publications to current issue at time of project specification preparation. 2. Update material requirements to agree with applicable requirements (types, grades, classes,) specified in the referenced Applicable Publications. A. Publications listed below form a part of this specif

10、ication to the extent referenced. Publications are referenced in the text by the basic designation only. Editions of applicable publications current on date of issue of bidding documents apply unless otherwise indicated. B. Aluminum Association (AA): AA-C22A41.Aluminum Chemically etched medium matte

11、, with clear anodic coating, Class I Architectural, 0.7-mil thick AA-C22A42.Chemically etched medium matte, with integrally colored anodic coating, Class I Architectural, 0.7 mils thick AA-C22A44.Chemically etched medium matte with electrolytically deposited metallic compound, integrally colored coa

12、ting Class I Architectural, 0.7-mil thick finish C. American National Standards Institute/Single-Ply Roofing Institute (ANSI/SPRI): ANSI/SPRI ES-1-03.Wind Design Standard for Edge Systems Used with Low Slope Roofing Systems D. American Architectural Manufacturers Association (AAMA): Provided by IHSN

13、ot for ResaleNo reproduction or networking permitted without license from IHS-,-,-10-10 07 60 00 - 3 AAMA 620Voluntary Specification for High Performance Organic Coatings on Coil Coated Architectural Aluminum AAMA 621Voluntary Specification for High Performance Organic Coatings on Coil Coated Archit

14、ectural Hot Dipped Galvanized (HDG) and Zinc-Aluminum Coated Steel Substrates E. ASTM International (ASTM): A167-99(R2009)Stainless and Heat-Resisting Chromium-Nickel Steel Plate, Sheet, and Strip A653/A653M-09.Steel Sheet Zinc-Coated (Galvanized) or Zinc Alloy Coated (Galvanized) by the Hot- Dip Pr

15、ocess B32-08Solder Metal B209-07.Aluminum and Aluminum-Alloy Sheet and Plate B370-09.Copper Sheet and Strip for Building Construction D173-03.Bitumen-Saturated Cotton Fabrics Used in Roofing and Waterproofing D412-06.Vulcanized Rubber and Thermoplastic Elastomers-Tension D1187-97(R2002).Asphalt Base

16、 Emulsions for Use as Protective Coatings for Metal D1784-08Rigid Poly (Vinyl Chloride) (PVC) Compounds and Chlorinated Poly (Vinyl Chloride) (CPVC) Compounds D3656-07Insect Screening and Louver Cloth Woven from Vinyl-Coated Glass Yarns D4586-07Asphalt Roof Cement, Asbestos Free F. Sheet Metal and A

17、ir Conditioning Contractors National Association (SMACNA): Architectural Sheet Metal Manual. G. National Association of Architectural Metal Manufacturers (NAAMM): AMP 500-06Metal Finishes Manual H. Federal Specification (Fed. Spec): A-A-1925A.Shield, Expansion; (Nail Anchors) UU-B-790A.Building Pape

18、r, Vegetable Fiber Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-10-10 07 60 00 - 4 I. International Code Commission (ICC): International Building Code, Current Edition 1.4 PERFORMANCE REQUIREMENTS SPEC WRITER NOTE: Select applicable subparagraph b

19、elow based upon FM Approvals 1-28, Table 4. Coordinate with uplift requirements of Division 07 roofing section. A. Wind Uplift Forces: Resist the following forces per FM Approvals 1-49: 1. Wind Zone 1: 0.48 to 0.96 kPa (10 to 20 lbf/sq. ft.): 1.92-kPa (40-lbf/sq. ft.) perimeter uplift force, 2.87-kP

20、a (60-lbf/sq. ft.) corner uplift force, and 0.96-kPa (20-lbf/sq. ft.) outward force. 2. Wind Zone 1: 1.00 to 1.44 kPa (21 to 30 lbf/sq. ft.): 2.87-kPa (60-lbf/sq. ft.) perimeter uplift force, 4.31-kPa (90-lbf/sq. ft.) corner uplift force, and 1.44-kPa (30-lbf/sq. ft.) outward force. 3. Wind Zone 2:

21、1.48 to 2.15 kPa (31 to 45 lbf/sq. ft.): 4.31-kPa (90-lbf/sq. ft.) perimeter uplift force, 5.74-kPa (120-lbf/sq. ft.) corner uplift force, and 2.15-kPa (45-lbf/sq. ft.) outward force. 4. Wind Zone 3: 2.20 to 4.98 kPa (46 to 104 lbf/sq. ft.): 9.96-kPa (208-lbf/sq. ft.) perimeter uplift force, 14.94-k

22、Pa (312-lbf/sq. ft.) corner uplift force, and 4.98-kPa (104-lbf/sq. ft.) outward force. SPEC WRITER NOTE: Standard below applies to shop-fabricated sheet metal copings and roof edge metal items tested under cited standard; it is a requirement of the current International Building Code. NRCA member f

23、irms are able to meet below utilizing NRCA-approved and tested details. B. Wind Design Standard: Fabricate and install /copings/ /roof-edge flashings/ tested per ANSI/SPRI ES-1 to resist design pressure /insert design pressure/ /indicated on Drawings/. 1.5 SUBMITTALS A. Submit in accordance with Sec

24、tion 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND SAMPLES. SPEC WRITER NOTE: Add to shop drawing list special items not specified in this section that are added to this section. B. Shop Drawings: For all specified items, including: Provided by IHSNot for ResaleNo reproduction or networking permitted w

25、ithout license from IHS-,-,-10-10 07 60 00 - 5 1. Flashings 2. Copings 3. Gravel Stop-Fascia 4. Gutter and Conductors 5. Expansion joints 6. Fascia-cant C. Manufacturers Literature and Data: For all specified items, including: 1. Two-piece counterflashing 2. Thru wall flashing 3. Expansion joint cov

26、er, each type 4. Nonreinforced, elastomeric sheeting 5. Copper clad stainless steel 6. Polyethylene coated copper 7. Bituminous coated copper 8. Copper covered paper 9. Fascia-cant D. Certificates: Indicating compliance with specified finishing requirements, from applicator and contractor. PART 2 -

27、PRODUCTS 2.1 FLASHING AND SHEET METAL MATERIALS SPEC WRITER NOTE: Retain paragraphs below that correspond to project requirements. A. Stainless Steel: ASTM A167, Type 302B, dead soft temper. B. Copper ASTM B370, cold-rolled temper. C. Bituminous Coated Copper: Minimum copper ASTM B370, weight not le

28、ss than 1 kg/m (3 oz/sf). Bituminous coating shall weigh not less than 2 kg/m (6 oz/sf); or, copper sheets may be bonded between two layers of coarsely woven bitumen-saturated cotton fabric ASTM D173. Exposed fabric surface shall be crimped. D. Copper Covered Paper: Fabricated of electro-deposit pur

29、e copper sheets ASTM B 370, bonded with special asphalt compound to both sides of creped, reinforced building paper, UU-B-790, Type I, style 5, or to a three ply sheet of asphalt impregnated creped paper. Grooves running along the width of sheet. E. Polyethylene Coated Copper: Copper sheet ASTM B370

30、, weighing 1 Kg/m (3 oz/sf) bonded between two layers of (two mil) thick polyethylene sheet. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-10-10 07 60 00 - 6 F. Aluminum Sheet: ASTM B209, alloy 3003-H14 /except alloy used for color anodized aluminu

31、m shall be as required to produce specified color. Alloy required to produce specified color shall have the same structural properties as alloy 3003-H14/. G. Galvanized Sheet: ASTM, A653. H. Nonreinforced, Elastomeric Sheeting: Elastomeric substances reduced to thermoplastic state and extruded into

32、continuous homogenous sheet (0.056 inch) thick. Sheeting shall have not less than 7 MPa (1,000 psi) tensile strength and not more than seven percent tension-set at 50 percent elongation when tested in accordance with ASTM D412. Sheeting shall show no cracking or flaking when bent through 180 degrees

33、 over a 1 mm (1/32 inch) diameter mandrel and then bent at same point over same size mandrel in opposite direction through 360 degrees at temperature of -30C (-20 F). 2.2 FLASHING ACCESSORIES A. Solder: ASTM B32; flux type and alloy composition as required for use with metals to be soldered. B. Rosi

34、n Paper: Fed-Spec. UU-B-790, Type I, Grade D, Style 1b, Rosin-sized sheathing paper, weighing approximately 3 Kg/10 m( 6 lbs/100 sf). C. Bituminous Paint: ASTM D1187, Type I. D. Fasteners: 1. Use copper, copper alloy, bronze, brass, or stainless steel for copper and copper clad stainless steel, and

35、stainless steel for stainless steel and aluminum alloy. Use galvanized steel or stainless steel for galvanized steel. 2. Nails: a. Minimum diameter for copper nails: 3 mm (0.109 inch). b. Minimum diameter for aluminum nails 3 mm (0.105 inch). c. Minimum diameter for stainless steel nails: 2 mm (0.09

36、5 inch) and annular threaded. d. Length to provide not less than 22 mm (7/8 inch) penetration into anchorage. 3. Rivets: Not less than 3 mm (1/8 inch) diameter. 4. Expansion Shields: Fed Spec A-A-1925A. E. Sealant: As specified in Section 07 92 00, JOINT SEALANTS for exterior locations. F. Insect Sc

37、reening: ASTM D3656, 18 by 18 regular mesh. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-10-10 07 60 00 - 7 G. Roof Cement: ASTM D4586. 2.3 SHEET METAL THICKNESS A. Except as otherwise shown or specified use thickness or weight of sheet metal as f

38、ollows: B. Concealed Locations (Built into Construction): 1. Copper: 30g (10 oz) minimum 0.33 mm (0.013 inch thick). 2. Stainless steel: 0.25 mm (0.010 inch) thick. 3. Copper clad stainless steel: 0.25 mm (0.010 inch) thick. 4. Galvanized steel: 0.5 mm (0.021 inch) thick. C. Exposed Locations: 1. Co

39、pper: 0.4 Kg (16 oz). 2. Stainless steel: 0.4 mm (0.015 inch). 3. Copper clad stainless steel: 0.4 mm (0.015 inch). D. Thickness of aluminum or galvanized steel is specified with each item. 2.4 FABRICATION, GENERAL A. Jointing: 1. In general, copper, stainless steel and copper clad stainless steel j

40、oints, except expansion and contraction joints, shall be locked and soldered. 2. Jointing of copper over 0.5 Kg (20 oz) weight or stainless steel over 0.45 mm (0.018 inch) thick shall be done by lapping, riveting and soldering. 3. Joints shall conform to following requirements: a. Flat-lock joints s

41、hall finish not less than 19 mm (3/4 inch) wide. b. Lap joints subject to stress shall finish not less than 25 mm (one inch) wide and shall be soldered and riveted. c. Unsoldered lap joints shall finish not less than 100 mm (4 inches) wide. 4. Flat and lap joints shall be made in direction of flow.

42、5. Edges of bituminous coated copper, copper covered paper, nonreinforced elastomeric sheeting and polyethylene coated copper shall be jointed by lapping not less than 100 mm (4 inches) in the direction of flow and cementing with asphalt roof cement or sealant as required by the manufacturers printe

43、d instructions. 6. Soldering: Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-10-10 07 60 00 - 8 a. Pre tin both mating surfaces with solder for a width not less than 38 mm (1 1/2 inches) of uncoated copper, stainless steel, and copper clad stainless

44、 steel. b. Wire brush to produce a bright surface before soldering lead coated copper. c. Treat in accordance with metal producers recommendations other sheet metal required to be soldered. d. Completely remove acid and flux after soldering is completed. B. Expansion and Contraction Joints: 1. Fabri

45、cate in accordance with the Architectural Sheet Metal Manual recommendations for expansion and contraction of sheet metal work in continuous runs. 2. Space joints as shown or as specified. 3. Space expansion and contraction joints for copper, stainless steel, and copper clad stainless steel at inter

46、vals not exceeding 7200 mm (24 feet). 4. Space expansion and contraction joints for aluminum at intervals not exceeding 5400 mm (18 feet), except do not exceed 3000 mm (10 feet) for gravel stops and fascia-cant systems. 5. Fabricate slip-type or loose locked joints and fill with sealant unless other

47、wise specified. 6. Fabricate joint covers of same thickness material as sheet metal served. C. Cleats: 1. Fabricate cleats to secure flashings and sheet metal work over 300 mm (12 inches) wide and where specified. 2. Provide cleats for maximum spacing of 300 mm (12 inch) centers unless specified oth

48、erwise. 3. Form cleats of same metal and weights or thickness as the sheet metal being installed unless specified otherwise. 4. Fabricate cleats from 50 mm (2 inch) wide strip. Form end with not less than 19 mm (3/4 inch) wide loose lock to item for anchorage. Form other end of length to receive nai

49、ls free of item to be anchored and end edge to be folded over and cover nail heads. D. Edge Strips or Continuous Cleats: 1. Fabricate continuous edge strips where shown and specified to secure loose edges of the sheet metal work. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-10-10 07