SECTION METAL ROOF PANEL, STANDING SEAM - SRS3

Transcription

1 SECTION METAL ROOF PANEL, STANDING SEAM - SRS3 PART 1 GENERAL 1.1 REFERENCES The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only. ALUMINUM ASSOCIATION (AA) AA ADM1 (2010) Aluminum Design Manual AMERICAN ARCHITECTURAL MANUFACTURERS ASSOCIATION (AAMA) AAMA 620 AAMA 621 Voluntary Specifications for High Performance Organic Coatings on Coil Coated Architectural Aluminum Substrates Voluntary Specifications for High Performance Organic Coatings on Coil Coated Architectural Hot Dipped Galvanized (HDG) & Zinc-Aluminum Coated Steel Substrates AMERICAN SOCIETY OF CIVIL ENGINEERS (ASCE) ASCE 7-05 (2006; Errata 2007) Minimum Design Loads for Buildings and Other Structures ASTM INTERNATIONAL (ASTM) ASTM A 653/A 653M ASTM A 666 ASTM A 755/A 755M ASTM A 792/A 792M ASTM B 209 (2009a) Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process (2003) Standard Specification for Annealed or Cold-Worked Austenitic Stainless Steel Sheet, Strip, Plate and Flat Bar (2003; R 2008) Standard Specification for Steel Sheet, Metallic Coated by the Hot-Dip Process and Prepainted by the Coil-Coating Process for Exterior Exposed Building Products (2009a) Standard Specification for Steel Sheet, 55% Aluminum-Zinc Alloy-Coated by the Hot-Dip Process (2007) Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate Page 1

2 ASTM C 920 ASTM D 2244 ASTM D 4214 ASTM E 84 ASTM E 1514 ASTM E 1592 ASTM E 1637 ASTM E 1646 ASTM E 1680 ASTM E 1980 (2008) Standard Specification for Elastomeric Joint Sealants (2009a) Calculation of Color Tolerances and Color Differences from Instrumentally Measured Color Coordinates (2007) Standard Test Method for Evaluating the Degree of Chalking of Exterior Paint Films (2009c) Standard Test Method for Surface Burning Characteristics of Building Materials Standard Specification for Structural Standing Seam Steel Roof Panel Systems (2005) Structural Performance of Sheet Metal Roof and Siding Systems by Uniform Static Air Pressure Difference Standard Specification for Structural Standing Seam Aluminum Roof Panel Systems (1995; R 2003) Standard Test Method for Water Penetration of Exterior Metal Roof Panel Systems by Uniform Air Pressure Difference Standard Test Method for Rate of Air Leakage Through Exterior Metal Roof Panel Systems Standard Practice for Calculating Solar Reflectance Index of Horizontal and Low- Sloped Opaque Surfaces FM APPROVALS (FM) FM 4471 Class 1 Panel Roofs SHEET METAL AND AIR CONDITIONING CONTRACTORS NATIONAL ASSOCIATION, INC. (SMACNA) SMACNA 1793 Architectural Sheet Metal Manual UNDERWRITERS LABORATORIES (UL) UL 580 UL Fire Resistance (2006; Rev thru Jul 2009) Tests for Uplift Resistance of Roof Assemblies (2009) Fire Resistance Directory 1.2 DESCRIPTION Standing seam metal roof panel Page 2

3 Metal roof panels with concealed attachment, [and supplemental framing members required for complete metal framing attachment system], and accessories necessary for a complete watertight installation. 1.3 DEFINITIONS Cradle to Cradle Certification The Cradle to Cradle Certification process, administered by McDonough Braungart Design Chemistry (MBDC), that evaluates materials and product ingredients and the complete formulation for human and environmental health impacts throughout its lifecycle as well as its potential for being truly recycled or safely composted. 1.4 PERFORMANCE REQUIREMENTS General Provide metal roof panel system meeting performance requirements as determined by application of specified tests by a qualified testing agency on manufacturer's standard assemblies Air Infiltration Maximum 0.03 cfm/sq. ft. (0.3 L/s per sq. m) per ASTM E 1680 at a staticair-pressure difference of 4 lbf/sq. ft. (191.5 Pa) Water Penetration No uncontrolled water penetration at a static pressure of 6.4 lbf/sq. ft(306.4 Pa) when tested per ASTM E Wind Uplift Resistance UL 580 wind uplift rating of UL Seismic Performance Comply with ASCE 7-05 Sections 9, "Earthquake Loads" Structural Performance Provide metal roof panel system capable of withstanding the effects of indicated loads and stresses within limits and under conditions indicated, per ASTM based on testing according to ASTM E 1592: FM APPROVALS Comply with FM Provide metal roof panel assembly listed in FM Approvals RoofNav. Fire and Windstorm Classification: Class 1A-90. Hail Resistance: SH Wind Loads Page 3

4 Determine loads based on uniform pressure, importance factor, exposure category, and basic wind speed indicated on drawings Snow Loads As indicated on Drawings Deflection Limits Metal roof panel system shall withstand wind and snow loads with vertical deflections no greater than 1/180 of the span Concentrated Load Performance Provide metal roof panel system that withstand a concentrated load of 250 lbs (113 kg) applied to a 4 sq. in. (2580 sq. mm) at midspan and center of the panel halfway between supports without causing deformation, buckling or side lap separation Thermal Movement Allow for thermal movements from variations in both ambient and internal temperatures. Accommodate movement of support structure caused by thermal expansion and contraction. Thermal Cycle test: Provide metal roof panel system that show no wear when subject to 100,000 cycles of 1 inch movement in the plane of the panel face relative to the clip anchor Insulation Roof systems that incorporate foam plastic insulation must be tested by the foam plastic manufacturer in accordance with NFPA Energy Performance Solar Reflectance Index Minimum 78 for roof slopes of 2:12 or less and 29 for roof slopes greater than 2:12 per ASTM E Energy Star Qualified Listed on USDoE ENERGY STAR Roof Products Qualified Product List SUBMITTALS Government approval is required for submittals with a "G" designation; submittals not having a "G" designation are [for Contractor Quality Control approval.] [for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government.] Submit the following in accordance with Section SUBMITTAL PROCEDURES: SD-01 Preconstruction Submittals Page 4

5 Roof panels; coordination drawings Provide drawings of metal roof panel system coordinating the installation with structural framing secondary framing, roof deck, penetrations, openings, and mechanical attachments. Buy American Act Certification Submit documentation certifying that products comply with provisions of the Buy American Act 41 U.S.C 10a - 10d. SD-02 Shop Drawings Roof panels Show layouts of metal roof panels. Include details of each condition of installation, panel profiles, and attachment to building. Provide details at a minimum scale 1-1/2-inch per foot of edge conditions, joints, fastener and sealant placement, flashings, penetrations, and special details. Make distinctions between factory and field assembled work. Include data indicating compliance with performance requirements. Indicate points of supporting structure that must coordinate with standing seam metal roof system installation. Include structural data indicating compliance with performance requirements and requirements of local authorities having jurisdiction. SD-03 Product Data Roof panels Manufacturers' instructions Factory applied color finish Provide representative color charts of manufacturer's full range of colors. Accessories LEED Submittals Credit SS 7.2: Product data indicating compliance with solar reflectance index requirement. Credit MR 4: Percentages by weight of post-consumer and preconsumer recycled content. Total weight of products provided. Include statement indicating costs for each product having recycled content. Page 5

6 Cradle to Cradle Certification: Submit minimum of silver level Cradle to Cradle certification or a comparable independent sustainability audit acceptable to Owner that evaluates and validates materials, material reutilization/design for environment, energy use, water usage, and social responsibility of the product and manufacturing process. Protective Coating contains no Polyvinyl Chloride. Minimum Nutrient Utilization Score as defined by MBDC: 50. Minimum steel recycled content: 25 percent. Certified and Documented energy used to manufacture panels on a square foot basis. Water Stewardship Guidelines: Signed by company CEO. SD-04 Samples Sealant Factory applied color finish Roof panels Provide 12-inch long, full width section of metal wall or roof panel showing finishes, vertical joint return, injected core material, and anchoring details. Provide 12-inch long pieces of trim. SD-06 Test Reports Air infiltration Indicating compliance of products with requirements, from a qualified independent testing agency, when requested by architect. Water penetration Indicating compliance of products with requirements, from a qualified independent testing agency, when requested by architect. Structural performance Indicating compliance of products with requirements, from a qualified independent testing agency, when requested by architect. Wind loads Indicating compliance of products with requirements, from a qualified independent testing agency, when requested by architect. Fire performance characteristics Indicating compliance of products with requirements, from a qualified independent testing agency, when requested by architect. Page 6

7 Thermal movement Indicating compliance of products with requirements, from a qualified independent testing agency, when requested by architect. SD-07 Certificates Installer Qualifications For Installer firm and Installer's field supervisor SD-08 Manufacturer's Instructions Installation manual SD-09 Manufacturer's Field Reports Manufacturer's field inspection reports SD-11 Closeout Submittals Warranty 1.6 QUALITY ASSURANCE Manufacturer/Source Provide metal roof panel system from a single manufacturer. Provide products by same manufacturer as manufacturer of products specified in Division [00] Section "[Insert Division number and Section name]" Manufacturer Qualifications Approved manufacturer listed in this Section with minimum 5 years experience in manufacture of similar products in successful use in similar applications. Approval of Comparable Products: Submit the following in accordance with project substitution requirements, within time allowed for substitution review: Product data, including certified independent test data indicating compliance with requirements. Samples of each component. Sample submittal from similar project. Project references: Minimum of 5 installations not less than 5 years old, with Owner and Architect contact information. Sample warranty Installer Qualifications Page 7

8 Experienced Installer with minimum of 5 years experience with successfully completed projects of a similar nature and scope. Provide work installed by same Installer as Installer of products specified in Division [00] Section "[Insert Division number and Section name]." Fire Performance Characteristics Provide metal roof panel system with the following fire-test characteristics. Surface-Burning Characteristics: Provide metal roof panel system panels with the following characteristics when tested per ASTM E 84. Flame spread index: 25 or less Smoke developed index: 450 or less Fire Resistance Ratings Provide metal roof panel system tested as part of a roof assembly listed in UL Fire Resistance Directory Buy American Act Certification Provide metal roof panels complying with Buy American Act. 1.7 ADMINISTRATIVE REQUIREMENTS Preinstallation Meeting Prior to erection of metal roof panel system, conduct preinstallation meeting at site attended by Owner, Architect, manufacturer's technical representative, inspection agency and related trade contractors. Coordinate building framing in relation to metal roof panel system. Coordinate openings and penetrations of metal roof panel system. Coordinate work of Division 07 Sections "Roof Specialties" and "Roof Accessories" and roof openings and penetrations and manufacturer's accessories with installation of metal roof panels. 1.8 DELIVERY, STORAGE, AND HANDLING Protect products of metal roof panel system during shipping, handling, and storage to prevent staining, denting, deterioration of components or other damage. Protect panels and trim bundles during shipping with water resistant paper. Protect painted surfaces with a strippable protective covering before shipping. Deliver, unload, store, and erect metal roof panel system and accessory items without misshaping panels or exposing panels to surface damage from weather or construction operations. Store in accordance with Manufacturer's written instruction. Provide wood collars for stacking and handling in the field. Page 8

9 1.9 WARRANTY Special Manufacturer's Warranty On Manufacturer's standard form, in which Manufacturer agrees to repair or replace components of metal roof panel system that fail in materials and workmanship within [two] years from date of Substantial Completion Metal Panel Warranty On Manufacturer's standard form, in which Manufacturer agrees to repair or replace metal panels that rupture or perforate due to corrosion within [20] years from the date of Substantial Completion Special Weathertight Performance Warranty On Manufacturer's standard form, in which Manufacturer and Installer agree to pay the cost of repair or replacement of components of metal roof panel system that fail to remain weathertight for a period of [five] [10] [20] years from date of Substantial Completion, up to the cost of the initial material purchase order and initial installation labor cost Special Panel Finish Warranty On Manufacturer's standard form, in which Manufacturer agrees to repair or replace metal roof panels that evidence deterioration of factory-applied finish within [20] years from date of Substantial Completion, including: Color fading in excess of 5 Hunter units per ASTM D Chalking in excess of No. 8 rating per ASTM D Failure of adhesion, peeling, checking, or cracking. PART 2 PRODUCTS 2.1 ROOF PANELS Basis of Design Product and Manufacturer: SRS3 Structural Standing Seam Metal Roof Panel System; CENTRIA Architectural Systems; Moon Township, PA Tel: (800) Tel: (412) Fax: (412) info@centria.com. Web: MATERIALS Metallic-Coated Steel Face Sheet Coil-coated, ASTM A 755/A 755M. Recycled Content: Provide steel sheet with recycled content meeting Project LEED requirements. Zinc Metallic Coated (Galvanized) Steel Sheet: ASTM A 653/A 653M, SS Grade 37, G90 (Z275), structural quality. Page 9

10 Aluminum-Zinc Coated Steel Sheet: ASTM A 792/A 792M, Grade 50B, class AZ50 Galvalume coating designation, and structural quality. Aluminum-Zinc Coated Steel Sheet: ASTM A 792/A 792M, Grade 50B, class AZ55 Galvalume Plus coating designation, and structural quality. Face Sheet: Minimum [0.030 inch/22 gage (0.76 mm)] [0.036 inch/20 gage (0.91 mm)] nominal uncoated thickness. Surface: [Smooth] [Non-Directional Embossed] Aluminum Face Sheet Smooth surface coil-coated, ASTM B 209, 3003-H14 or 5052-H32 alloy. Recycled Content: Provide aluminum sheet with recycled content meeting Project LEED requirements. Face Sheet: inch (1.0 mm) nominal thickness. Surface: [Smooth] [Non-Directional Embossed] Stainless-Steel Face Sheet: ASTM A 666, Architectural grade alloy type as indicated. Face Sheet: [0.030 inch/22 gage (0.76 mm)][0.036 inch/20 gage (0.91 mm)] nominal thickness. Finish: [Type 307, bright, non-directional polish, No. 2B] [Type 316, bright, non-directional polish, No. 2B] 2.3 ROOF PANELS Structural Standing Seam Metal Roof Panels Formed with 2 inch (51 mm) high vertical ribs at panel edges[ and evenly spaced raised longitudinal stiffening beads or planks], manufactured for sequential installation by attaching panels to supports using concealed clips and engaging edges of adjacent panels and mechanically seaming panel ribs together, sealed with factory-applied sealant. Basis of Design Product: CENTRIA, SRS3 Structural Standing Seam Metal Roof Panel. Panel Coverage: [12 inch (305 mm)][16 inch (406 mm)][18 inch (457 mm)]. Anchor Clips: Galvanized steel G90, 1-piece, 14 ga., movement allowance 2 inch (51 mm). Stainless steel, 2-piece, 16 ga., movement allowance 3 inch (76 mm). Page 10

11 2.4 FACTORY APPLIED COLOR FINISH Exposed Coil-Coated Finish System: Fluoropolymer Two-Coat System: 0.20 mil primer with 0.8-mil 70 percent PVDF fluoropolymer color coat, [AAMA 620][AAMA 621]. Basis of Design: CENTRIA Fluorofinish Fluoropolymer Two-Coat System: 0.80 mil primer with 0.8 mil 70 percent PVDF fluoropolymer color coat, [AAMA 620][AAMA 621]. Basis of Design: CENTRIA Duraguard Fluoropolymer Three-Coat System: 0.80 mil primer with 0.8 mil 70 percent PVDF fluoropolymer color coat, and a 0.8 mil 70 percent PVDF fluoropolymer clear coat, [AAMA 620][AAMA 621]. Basis of Design: CENTRIA Duraguard Plus Fluoropolymer Two-Coat Mica System: 0.20 mil primer with 0.8-mil 70 percent PVDF fluoropolymer color coat providing a pearlescent appearance, [AAMA 620][AAMA 621]. Basis of Design: CENTRIA Sundance Mica Fluoropolymer Three-Coat Metallic System: 0.20 mil primer with 0.8-mil 70 percent PVDF fluoropolymer color coat containing metal flakes, and a 0.5-mil 70 percent PVDF fluoropolymer clear coat, [AAMA 620][AAMA 621]. Basis of Design: CENTRIA Sundance AM Fluoropolymer Two-Coat Corrosion and Abrasion Resistant System: 3.0 mil primer with 0.8 mil 70 percent PVDF fluoropolymer color coat Basis of Design: CENTRIA Versacor Ultra PF Interior Finish: Manufacturer's standard Urethane Two-Coat Corrosion and Abrasion Resistant System: 3.0 mil barrier coat primer with 1.5 mil urethane color coat. Basis of Design: CENTRIA Versacor Ultra TF Interior Finish: Manufacturer's standard Urethane Two-Coat Plus Corrosion and Abrasion Resistant System: 3.0 mil primer with 3.0 mil urethane color coat. Basis of Design: CENTRIA Versacor Ultra HF Interior Finish: Manufacturer's standard Color Exterior Surface: [As indicated] [As selected by Architect from manufacturer's standard colors] [Match Architect's custom color]. Page 11

12 a. Energy Performance: [Comply with Solar Reflectance Index Requirement] [Provide Energy Star qualified product] [Meet CRRC-1 requirement]. Interior Surface: Manufacturer's standard primer color 2.5 ACCESSORIES Provide complete metal roof panel assembly incorporating trim, copings, fasciae, soffits, downspouts, insulation spacers and miscellaneous flashings. Provide required fasteners, gaskets, closure strips, and sealants. Fabricate and install accessories in accordance with SMACNA 1793 Manual. Steel Roof Panel Systems: Comply with ASTM E 1514 Aluminum Roof Panels Systems: Comply with ASTM E 1637 and AA ADM1 "Specification for Aluminum Structures" Flashing and Trim: Match material, thickness, and finish of metal roof panels Panel Fasteners Self-tapping screws, bolts, nuts, and other acceptable fasteners recommended by metal roof panel system manufacturer. Where exposed fasteners cannot be avoided, supply corrosion-resistant fasteners with heads matching color of metal panels by means of factory-applied coating. Exposed Screws: Manufacturer's recommended stainless steel screws with bonded neoprene and stainless steel washers, coated to match panel color Concealed Screws: Manufacturer's recommended corrosion resistant carbon steel with corrosion resistant coating Panel Sealants: Side Lap Sealant: One part, non-skinning, non-drying, synthetic butyl elastomer sealant. Field Applied Unexposed Sealant: Side Laps, end laps, and flashing details: Gun grade, nonskinning, butyl elastomer or polymeric non-skinning butyl tape. Exposed Sealant: ASTM C 920; elastomeric polyurethane, polysulfide, or silicone sealant; of type, grade, class, and use classifications required to seal joints in metal roof panels and remain weathertight; as recommended by metal roof panel manufacturer colored to match panel color Thermal Spacers at Purlins Manufacturer's standard spacer Snow Guards Page 12

13 Surface-Mounted, Metal, Stop-Type Snow Guards: Stops designed for attachment using approved adhesive. 2.6 SECONDARY METAL FRAMING Miscellaneous Framing Components, General Cold-formed metallic-coated steel sheet, ASTM A 653/A 653M, G90 (Z180) Hat Channels: inch/16 ga. (1.34 mm) minimum PART 3 EXECUTION 3.1 EXAMINATION Examine metal roof panel system substrate with Installer present. Inspect for erection tolerances and other conditions that would adversely affect installation of metal roof panel system installation.. Do not install roof panels until panel substrate meets roof panel manufacturer's requirements. Inspect framing that will support metal roof panel system to determine if support components are installed as indicated on approved shop drawings. Confirm presence of acceptable framing members at recommended spacing to match installation requirements of metal roof panel system. Panel Support Tolerances: Install metal roof panels on substrate within tolerances acceptable to metal roof panel manufacturer: 1/4 inch (6 mm) in any 20 foot (6100 mm) in any direction 1/2 inch (13 mm) over any single roof plane 3.2 INSTALLATION General: Install metal roof panel system in accordance with approved shop drawings, installation manual, and manufacturer's instructions and recommendations. Install metal roof panels in orientation, sizes, and locations indicated. Install metal roof panels in one piece lengths from the ridge to eave unless otherwise indicated on approved shop drawings. Anchor panels and other components securely in place. Provide for thermal and structural movement. Attach panels to metal framing using recommended clips, screws, fasteners, sealants, and adhesives indicated on approved shop drawings. Fasten metal roof panels to supports with concealed clips at each joint at location, spacing, and with fasteners recommended by manufacturer. Install clips to supports with self-tapping fasteners approved by manufacturer. Provide weatherproof escutcheons for pipe and conduit penetrating roof. Dissimilar Materials: Where elements of metal wall panel system will come into contact with dissimilar materials, treat faces and edges in contact with dissimilar materials as recommended by manufacturer. Page 13

14 Joint Sealers: Install joint sealers where indicated and where required for weatherproof performance of metal roof panel assemblies. Prepare joints and apply sealants per requirements of Division 07 Section "Joint Sealants." 3.3 ACCESSORY INSTALLATION General: Install metal roof panel accessories with positive anchorage to building and weather tight mounting and provide for thermal expansion. Coordinate installation with flashings and other components. Install related flashings and sheet metal trim per requirements of Division 07 Section "Sheet Metal Flashing and Trim." Install components required for a complete metal roof panel assembly, including trim, copings, flashings, sealants, gaskets, fillers, closure strips, and similar items. Comply with performance requirements, requirements of authorities having jurisdiction, and manufacturer's written installation instructions. Provide concealed fasteners except where noted on approved shop drawings. Set units true to line and level as indicated. Install work with laps, joints, and seams that will be permanently watertight and weather resistant. 3.4 FIELD QUALITY CONTROL Manufacturer's Field Inspection Reports: Engage a service representative authorized by metal wall panel manufacturer to inspect completed installation. Submit written report. Correct deficiencies noted in report. 3.5 CLEANING AND PROTECTION Remove temporary protective films when directed by Architect. Clean finished surfaces as recommended by metal roof panel manufacturer. Replace damaged panels and accessories that cannot be repaired to the satisfaction of the Architect. -- End of Section -- Page 14