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- SECTION 07613
-
- SHEET STAINLESS STEEL ROOFING
- NOTE ** This section includes stainless steel sheet
- roofing. Styles include flat seam, standing seam,
- batten seam and horizontal seam (Bermuda style)
- systems. The section is intended to cover custom
- fabricated products, but may also be used for
- standard products.
-
- NOTE ** Information in this section is provided by the
- Specialty Steel Industry of the United States
- (SSIUS) which is a source of technical data on
- stainless steel. SSIUS has the capabilities for
- providing seminars, technical publications and can
- help facilitate design assistance on the use of
- stainless steel products for architectural and
- engineering applications. For additional
- information, contact SSIUS at:
- NOTE **
- NOTE ** Specialty Steel Industry of the United States
- NOTE ** 3050 K Street, NW
- NOTE ** Washington, DC 20007
- NOTE ** Tel: (202) 342-8630
- NOTE ** Fax: (202) 342-8451
- NOTE **
- NOTE ** SECTION 07613 - SHEET STAINLESS STEEL ROOFING,
- Copyright 1998, The Architect's Catalog, Inc.
-
- NOTE ** Disclaimer: The Specialty Steel Industry of the
- United States (SSIUS) and the individual companies
- it represents have made every effort to ensure that
- the information presented in this specification is
- technically correct. However, neither the SSIUS
- nor its member companies warrants the accuracy of
- the information contained in this specification or
- its suitability for any general and specific use,
- the SSIUS assumes no liability or responsibility of
- any kind in connection with the use of this
- information. The reader is advised that the
- material contained herein should not be used or
- relied on for any specific or general applications
- without first securing competent advice.
-
- PART 1 GENERAL
-
- 1.1 SECTION INCLUDES
- NOTE ** Delete items below not required for project.
-
- A. Flat-seam stainless steel roofing.
-
- B. Standing-seam stainless steel roofing.
-
- C. Batten-seam stainless steel roofing.
-
- D. Horizontal-seam (Bermuda type) stainless steel roofing.
-
- E. Preformed stainless steel roofing.
-
- F. Custom-designed stainless steel roofing.
-
- 1.2 RELATED SECTIONS
- NOTE ** Delete any sections below not relevant to this
- project; add others as required.
-
- A. Section 05120 - Structural Steel: Roof framing.
-
- B. Section 05310 - Steel Deck.
-
- C. Section 06100 - Rough Carpentry: Roof framing and
- sheathing.
-
- D. Section 06150 - Wood Decking.
-
- E. Section 07210 - Building Insulation.
-
- F. Section 07623 - Sheet Stainless Steel Flashing:
- Stainless steel flashing and other trim not part of
- roofing.
- NOTE ** Edit the following paragraph to identify relevant
- items that are not included in this section but are
- included in the roof specialties section instead,
- such as reglets, elastic expansion joints,
- ornamental items.
-
- G. Section 07713 - Manufactured Stainless Steel Roof
- Specialties: Accessories on roof other than mechanical
- and structural items.
-
- H. Section 07900 - Joint Sealers.
-
- I. Section 09900 - Paints and Coatings: Field painting.
-
- 1.3 REFERENCES
- NOTE ** Delete references from the list below that are not
- actually required by the text of the edited
- section.
-
- A. ASCE 7 - Minimum Design Loads for Buildings and Other
- Structures; American Society of Civil Engineers.
-
- B. ASTM A 240/A 240M - Standard Specification for Heat
- Resisting Chromium and Chromium-Nickel Steel Plate,
- Sheet, and Strip for Pressure Vessels.
-
- C. ASTM A 308 - Standard Specification for Sheet, Terne
- (Lead-Tin Alloy) Coated by the Hot-Dip Process.
-
- D. ASTM E 907 - Standard Test Method for Field Testing
- Uplift Resistance of Roofing Systems Employing Steel
- Deck, Rigid Insulation and Bituminous Built-Up Roofing.
-
- E. SSIUS - Designer Handbook Series; Specialty Steel
- Industry of the United States (SSIUS).
- 1. Stainless Steel for Roofing, Flashings, Copings.
- 2. Design Guidelines for the Selection and Use of
- Stainless Steel.
- 3. Specifications for Stainless Steel.
- 4. Stainless Steel Fabrication.
- 5. Stainless Steel FastenersCA Systematic Approach to
- Their Selection.
- 6. Finishes for Stainless Steel.
- 7. Stainless Steel Architectural Facts.
-
- F. SMACNA - Architectural Sheet Metal Manual; Sheet Metal
- and Air Conditioning Contractors National Association,
- Inc.; fifth edition, 1993.
-
- 1.4 PERFORMANCE REQUIREMENTS
- NOTE ** Delete this entire article if the contractor or
- manufacturer is not required to design the roofing
- to particular performance criteria. An example is
- when the sheet metal roof is completely detailed
- without contractor options.
-
- A. Design roof assembly to conform to the requirements of
- ASCE 7, Minimum Design Loads for Buildings and Other
- Structures.
- NOTE ** Retain the paragraph below after consultation with
- roofing manufacturer. Delete if UL Class 90 roof
- is not required for the project, or modify if FM I-
- 90 or I-60 is required for the project.
-
- B. Wind Uplift: Provide roof assemblies meeting
- requirements of ASTM E 907 for UL Class 90 wind uplift
- resistance.
-
- 1.5 SUBMITTALS
-
- A. Submit in accordance with Section 01300.
-
- B. Product Data: Submit metal manufacturer's and
- fabricator's specifications, installation instructions,
- and general recommendations for roofing applications.
-
- C. Samples: 12 inch square specimens of specified stainless
- steel roofing material.
-
- D. Shop Drawings: Show manner of forming, joining, and
- securing stainless steel roofing, and pattern of seams.
- Show expansion joint details and waterproof connections
- to adjoining work and at obstructions and penetrations.
-
- 1.6 QUALITY ASSURANCE
-
- A. Installer Qualifications: A firm with 5 years of
- successful experience with installation of stainless
- steel roofing of type and scope equivalent to project
- requirements.
- NOTE ** Delete the following if not required. Custom work
- of special quality or complexity may justify the
- cost of an extensive mock-up.
-
- B. Mock-Up: Before proceeding with installation, prepare a
- mock-up incorporating materials and methods of
- fabrication and installation identical with project
- requirements.
- 1. Locate mock-up where indicated on drawings.
- 2. Retain accepted mock-up as quality standard for
- acceptance of completed roofing.
- 3. If accepted, mock-up may be incorporated as part of
- the work.
-
-
- PART 2 PRODUCTS
-
- 2.1 MANUFACTURERS
- NOTE ** Retain or insert manufacturers whose roofing
- systems comply with project requirements and whose
- availability for project have been verified.
-
- A. Provide products manufactured by one of the following:
- 1. Allegheny Ludlum Corporation.
- 2. Armco, Inc.
- 3. Avesta Sheffield, Inc.
- 4. Atlas Stainless Steels.
- 5. J & L Specialty Steel, Inc.
- 6. Lukens, Inc.
- 7. North American Stainless.
- NOTE ** Delete one of the two paragraphs below; coordinate
- with Division 1 requirements.
-
- B. Requests for substitutions will be considered in
- accordance with provisions of Section 01600.
-
- C. Substitutions: Not permitted.
-
- 2.2 SHEET METAL MATERIALS
- NOTE ** Select one of the following stainless steel types
- below: either uncoated stainless steel or terne-
- coated stainless steel.
-
- A. Stainless Steel Sheet for Roofing, Flashing, Accessories,
- and Batten Caps: ASTM A 240/A 240M, Type 304, fully
- annealed, dead soft temper.
- NOTE ** Delete all but one of the following thickness
- descriptions. Verify suitability and availability
- with roofing sheet manufacturer.
- 1. Thickness: 0.015 inch, 28 gauge, unless otherwise
- indicated.
- 2. Thickness: 0.018 inch, 26 gauge, unless otherwise
- indicated.
- 3. Thickness: 0.021 inch, 25 gauge, unless otherwise
- indicated.
- 4. Thickness: As indicated on drawings.
- NOTE ** Select finish below after consultation with
- material producer and roofing manufacturer; verify
- appropriate finish for project requirements. Other
- finishes are available.
- 5. Finish: No.2D (dull) mill rolled sheet finish.
- 6. Finish: ________.
- 7. Finish: As selected by Architect from roofing
- manufacturer's standards.
-
- B. Stainless Steel Sheet for Roofing, Flashing, Accessories,
- and Batten Caps: Terne-coated stainless steel sheet,
- complying with ASTM A 308, Type 304, fully annealed, dead
- soft temper.
- 1. Coating: Coat both sides of stainless steel sheet
- with terne alloy (80-20 lead/tin) in accordance with
- sheet metal manufacturer's standard nominal coating
- weight.
- NOTE ** Delete all but one of the following thickness
- descriptions. Verify suitability and availability
- with roofing sheet manufacturer.
- 2. Base Metal Thickness: 0.015 inch, 28 gauge, unless
- otherwise indicated.
- 3. Base Metal Thickness: 0.018 inch, 26 gauge, unless
- otherwise indicated.
- 4. Base Metal Thickness: 0.021 inch, 25 gauge, unless
- otherwise indicated.
- 5. Base Metal Thickness: As indicated on drawings.
- 6. Finish: Manufacturer's standard.
-
- C. Batten Bars and Strips: If size is not indicated,
- provide battens of nominal 2 inch by 2 inch size (1-1/2
- inch by 1-1/2 inch minimum).
- 1. Batten Bars: Stainless steel, thickness same as
- sheet roofing material.
- 2. Wood Batten Strips: Fabricated to size indicated
- from lumber complying with requirements of Section
- 06100 - Rough Carpentry and preservative treated by
- pressure process using a chemical solution that is
- non-hygroscopic and non-corrosive to type of
- stainless steel roofing.
-
- D. Nails: Stainless steel, AISI Type 300 series, 0.109 inch
- minimum not less than 7/8 inch long ring or annular type.
-
- E. Screws and Bolts: Stainless steel, AISI Type 300 series.
-
- F. Cleats: Stainless steel, ____ inch thick, type ____; 2
- inches wide x 3 inches long.
-
- G. Solder: Minimum 50-50 tin/lead solder for unexposed
- joints; minimum 80-20 tin/lead solder for color match at
- exposed joints. Use only phosphoric acid based flux for
- soldering stainless steel.
- NOTE ** Edit the following paragraph to delete items that
- are not relevant to project or which are specified
- in another section.
-
- H. Metal Accessories: Except as indicated as work of
- another specification section, provide all other
- components required for a complete roof system, including
- trim, copings, fascias, ridge closures, clips, seam
- covers, battens, flashings, gutters, louvers, and closure
- strips. Match materials and finishes of roof.
-
- I. Mastic Sealant: Polyisobutylene; non-hardening, non-
- migrating, heavy-bodied mastic sealant.
-
- J. Elastomeric Sealant: One-part elastomeric polyurethane,
- polysulfide, butyl, or silicone rubber sealant as
- recommended by the roofing manufacturer.
-
- K. Bituminous Coating: Cold-applied asphalt mastic, SSPC-
- Paint 12, compounded for 15 mil dry film thickness per
- coat, except as otherwise indicated; inert-type non-
- corrosive compound, nominally free of sulfur components
- and other deleterious impurities.
-
- 2.3 ACCESSORY MATERIALS
- NOTE ** Delete any of the accessory materials below that
- are not required for the project.
-
- A. Miscellaneous Materials: Provide protective coatings,
- separators, sealants and other accessory items as
- recommended by stainless steel sheet manufacturer and
- fabricator for stainless steel roofing work, except as
- otherwise indicated.
-
- B. Roofing Felt: Asphalt or coal tar saturated felt
- weighing not less than 30 lb per 100 square feet.
-
- C. Fabric Underlayment: Manufacturer's standard non-woven
- polyester fabric marketed for use in roofing systems
- weighing 6.0 oz per sq yd, white, non-swelling, rot and
- mildew resistant; type as recommended by roofing
- manufacturer.
-
- D. Slip Sheet: Minimum 4-lb rosin-sized building paper.
-
- E. Sealing Tape: Pressure-sensitive 100 percent solids
- polyisobutylene compound sealing tape with release paper
- backing. Provide permanently elastic, non-sag, non-
- toxic, non-staining tape.
-
- 2.4 METAL FABRICATION
-
- A. Shop-fabricate work to greatest extent possible.
-
- B. Conform to dimensions and profiles indicated. Comply
- with details shown and with applicable requirements of
- SMACNA Architectural Sheet Metal Manual and other
- recognized industry practices.
-
- C. Fabricate for waterproof and weather-resistant
- performance with expansion provisions for running work
- sufficient to permanently prevent leakage, damage, or
- deterioration of the work.
-
- D. Form work to fit substrate. Comply with material
- manufacturer's instructions and recommendations for
- forming material. Form exposed stainless steel work
- without excessive oil-canning, buckling, and avoidable
- tool marks, true to line and levels indicated, with
- exposed edges folded back to form hems.
-
- E. Form and fabricate sheets, seams, strips, cleats,
- valleys, ridges, edge treatments, integral flashings and
- other components of stainless steel roofing to profiles,
- patterns and drainage arrangements shown and as required
- for permanently leakproof construction. Provide for
- thermal expansion and contraction of the work, as
- indicated.
-
- F. Seams: Fabricate non-moving joints in stainless steel
- sheet with flat-lock seams. Tin edges to be seamed, form
- seams, and solder. Rivet joints for additional strength
- where indicated.
-
- G. Hooked-Type Joints: Where lapped or bayonet-type
- expansion provisions in work cannot be used, or would not
- be sufficiently water- or weatherproof, form expansion
- joints of intermeshing hooked flanges, not less than 1
- inch deep, filled with mastic sealant concealed within
- joint.
-
- H. Sealant Joints: Where movable, non-expansion-type joints
- are indicated or required for proper performance of work,
- form stainless steel to provide for proper installation
- of elastomeric sealant, in compliance with SMACNA
- standard details.
-
- I. Separations: Provide for separation of stainless steel
- from different metal types and corrosive substrates by
- coating concealed surfaces at locations of contact with
- bituminous coating or other permanent separation as
- recommended by manufacturer or fabricator.
-
-
- PART 3 EXECUTION
-
- 3.1 PREPARATION
-
- A. Coordinate stainless steel roofing with rain drainage
- work, flashing, trim and construction of decks, parapets,
- walls, and other adjoining work to provide a permanently
- leakproof, secure, and non-corrosive installation.
-
- B. Clean surfaces to receive stainless steel roofing.
- Substrate to be smooth and free of defects. Drive
- projecting nails or other fasteners flush with substrate.
-
- 3.2 INSTALLATION
- NOTE ** Delete all installation instructions below that are
- not applicable to the project or the materials
- being installed.
-
- A. Except as otherwise shown or specified, comply with
- recommendations and instructions of manufacturer of
- stainless steel roofing being fabricated and installed
- and with SMACNA Architectural Sheet Metal Manual.
-
- B. Galvanic Action Protection: Isolate different metal
- types from each other to prevent galvanic action.
- NOTE ** Retain underlayment provisions below unless roofing
- manufacturer agrees that it is unnecessary.
-
- C. Install underlayment of slip sheet over a course of
- roofing felt under stainless steel roofing unless
- otherwise recommended by manufacturer of sheet metal.
- Use adhesive for temporary anchorage, where possible, to
- minimize use of mechanical fasteners under stainless
- steel roofing. Lap joints 2 inches minimum.
-
- D. Seal joints as shown and as required for leakproof
- construction.
-
- E. Hooked-Type Joints:
- 1. When ambient temperature is moderate at time of
- installation, 40 degrees to 70 degrees F (4 degrees
- to 21 degrees C), set joint members for 50 percent
- movement either way.
- 2. Adjust setting proportionately for installation at
- higher ambient temperatures.
- 3. Do not install at temperatures below 40 degrees F (4
- degrees C).
- 4. Comply with requirements of Section 07900 for
- handling and installing sealants.
-
- F. Provide uniform, neat seams with minimum exposure of
- solder, welds, and sealant.
-
- G. In exposed work, conceal fasteners and expansion
- provisions where possible and locate so as to minimize
- possibility of leakage. Cover and seal fasteners and
- anchors as required for a tight installation.
-
- H. Soldering: Tin uncoated stainless steel surfaces for a
- width of 1-1/2 inches at edges, using solder recommended
- for stainless steel work. Exception: Where surfaces are
- terne-coated stainless steel, do not tin edges, but wire
- brush terne coating before soldering.
-
- 3.3 CLEANING
-
- A. Remove protective film (if any) from exposed surfaces of
- stainless steel roofing promptly upon installation.
- Strip with care to avoid damage to finishes.
-
- B. Clean exposed metal surfaces of substances that might
- cause staining, corrosion, or deterioration of finish or
- that would interfere with uniform oxidation and
- weathering.
-
- 3.4 PROTECTION
-
- A. Protect stainless steel roofing in a manner that ensures
- that the work is without damage or deterioration other
- than natural weathering at time of Substantial
- Completion.
-
- END OF SECTION
-