Guide Specifications
2012 Master Format™ Section 07 42 13.19
Metl-Span® ThermalSafe®Fire Resistant Wall Panel
PART 1 – GENERAL
1.1 Work Included
A. Fire resistant metal panel cladding system with insulating structural mineral wool core for the exterior walls, partitions, ceilings and liners where indicated on the drawings. The unique LockGuard®interlocking side joint allows the panel to achieve one-, two- and three-hour fire resistant ratings for wall applications and 90 minutes for ceilings. The advanced mineral wool core also provides a good thermal performance and protection from the elements. Also included, are all necessary trims, fasteners and sealants as required for a weathertight installation.
1. Steel faced factory laminated profiled panels with compatible joinery. Panels shall be designed for installation in a vertical or horizontal orientation.
2. Silicone Sealant is required at the panel joints and perimeter conditions for moisture protection ofmineral fiber core.
1.2 Related Section
A. Section 07 62 00 – Sheet Metal Flashing and Trim
B. Section 07 92 00 – Joint Sealants
C. Section 01 81 13 – Sustainable Design Requirements – LEED®: The Leadership in Energy & Environmental Design green building rating systems developed and adopted by the U.S. Green Building Council (USGBC). The systems certify levels of environmental achievement based on a point and credit scoring system.
1.3 References
A. Fire Performance
1. FM Approval Standard 4880 – Class 1 Fire Rating of Insulated Interior Wall andCeiling Panels
2. ASTM E 84 – Standard Test Method for Surface Burning Characteristics of Building Materials
3. ASTM E 119 (UL 263) – Fire Tests of Building Construction Materials
4. ASTM E 814 (UL 1471) – Standard Test Method for Fire Tests of Through-Penetration Fire Stops
5. ASTM E 136 – Standard Test Method for Behavior of Materials in a Vertical Tube Furnace at 750° C
B. Structural Performance
1. ASTM E 72 – Standard Test Methods of Conduction Strength Tests of Panels for Building Construction
C. Vapor Barrier Performance
1. ASTM E 283 – Standard Method for Determining the Rate of Air Leakage Through Exterior Windows, Curtain Walls and Doors Under Specified Pressure Differences Across the Specimen
2. ASTM E 331 – Standard Test Method for Water Penetration of Exterior Windows, Skylights, Doors and Curtain Walls by Uniform Static Air Pressure Difference
D. Thermal Performance
1. ASTM C 518 – Standard Test Method for Steady-State Heat Flux Measurements and Thermal Transmission Properties by Means of the Heat Flow Meter Apparatus
E. Metal Coatings
1. ASTM A 653 – Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) by the Hot-Dip Process
2. ASTM A 792 – Standard Specification for Steel Sheet, Aluminum-Zinc Alloy Coated Steel by the Hot-Dip Process
3. ASTM A 924 – General Requirements for Steel Sheet, Metallic-Coated by the Hot-Dip Process
F. Canadian Certifications
1. CAN/ULC S102 – Standard Method of Test for Surface Burning Characteristics of Building Materials and Assemblies
2. CAN/ULC S101 – Fire Endurance Tests of Building Construction and Materials
3. CAN4 S114 – Test for Determination of Non-Combustibility in Building Materials
1.4 Performance Requirements
A. Structural Tests
1. The design load/deflection criteria shall be verified from tests per ASTM E 72 “Air BagMethod”.
B. Thermal Performance
1. Testing in accordance with ASTM C 518, “Measurement of Steady State Thermal Transmission”, the panels shall provide a K-factor of .275 btu/sf/hr/deg. F at 75° F. (24° C) mean temperature.
C. Vapor Barrier
1. Air Infiltration: Air infiltration shall not exceed .01 cfm at 6.24 psf and .04 cfm per square foot of wall area when tested per ASTM E 283 at a static pressure of 12.0 psf (.576 kPa).
2. Static Water Penetration: There shall be no uncontrolled water penetration through the panel joints at a static pressure of 20.0 psf (.96 kPa) when tested per ASTM E 331.
D. Fire
1. Surface Burning Characteristics: The insulated core shall have been tested in accordance with ASTM E 84 for surface burning characteristics. The core shall have a maximum flame spread of 0 and a maximum smoke developed rating of 0.
2. FM Approval Standard 4880, 50′ (15.24 m) High Corner Test for Unlimited Height Structures: The panel assembly shall not support a self-propagating fire which reaches any of the limits of the 50′ (15.24 m) high corner test structure as evidenced by flaming or material damage of the ceiling of the assembly. Product is approved as interior wall and ceiling panel.
Note to Specifier: Approval is applicable to structures of unlimited height.
3. According to the fiber material specification (MSB 85 dated February 26, 2009), the flame spread index is 0 and smoke developed index is 0. The core material should be listed as non-combustible per ASTM E 136 and CAN4 S114, which are the more critical criteria for IBC code acceptance for non-combustible construction.
E. Fire Resistant Data
1. The finished panel in a four (4) inch thickness shall meet the requirements of a one (1) hour fire resistant rating for non-bearing wall, listed by UL per design number U050 for US and design number W021 for Canada. Listed by Intertek for US and Canada per design number MSN/IMWP 60-01.
2. The finished panel in a six (6) inch thickness shall meet the requirements of a two (2) hour fire resistant rating for non-bearing wall, listed by Intertek for US and Canada per design number MSN/IMWP 120-01.
3. The finished panel in a seven (7) inch thickness shall meet the requirements of a two (2) hour fireresistant rating for non-bearing wall, listed by UL per design number U050 for US and design number W021 for Canada.
4. The finished panel in an eight (8) inch thickness shall meet the requirements of a three (3) hour fire resistant rating for non-bearing wall listed at UL per design number U050 for US and design number W021 for Canada. Listed by Intertek for US and Canada per design number MSN/IMWP 180-01.
5. The one (1) and two (2) hour fire rated wall panel shall meet the requirements ofpenetration fire stop conditions listed by ULin accordance with ASTM E 814 (per UL designs W-N-1001 thru W-N-7001, for US and Canada). Opening can be located on or off panel unit joints.
6. The finished panel in a six (6) inch thickness shall meet the requirements of a one and a half (1-½) hourresistant rating for a ceiling, listed by Intertek for US and Canada per design number MSN/CP 90-01.
7. Testing for items 1, 2, 3, 4 and 6 were conducted in accordance with ASTM E119, CAN/ULC S101 and UL 263.
1.5 Quality Assurance
A. Installer Qualifications: Installed by a contractor with a minimum of five (5) years’ experience with this type of construction, and documentation indicating successful completion of contracts for projects of similar size, scope and materials.
B. Manufacturer’s Qualifications: The manufacturer shall have a minimum of ten (10) years’ experience in production of factory foamed-in-place insulated metal panels.
1.6Submittals
A. Submit under provisions of Section 01 33 00.
B. Manufacturer’s data sheets on each product to be used, including:
1. Preparation instructions and recommendations.
2. Storage and handling requirements and recommendations.
3. Material type, metal thickness and finish.
4. Installation methods.
C. Shop Drawings: Including elevations, fastening patterns, sections of each condition and details as required.
D. Selection Samples: For each finish product specified, two complete sets of color chips representing manufacturer’s full range of available colors and patterns.
E. Panel Sample: Submit 1’ (305 mm) high by full width sample panel for each profile specified indicating the metal, texture and finish.
F. Manufacturer’s Certificates: Certify products meet or exceed specified requirements.
G. LEED Submittals:
1. MR – Material and Resource
1. MR Credit 1.1 and 1.2: Building Reuse
1. Reuse panels for envelope/structure of a new project, demonstrating a reuse of at least 55% surface area of existing building structure and 50% (by area) of the completed building.
2. MR Credit 4.1 and 4.2: Recycled Content
1. Percentage weight of post-consumer and pre-consumer recycled content – use materials with recycled content.
2. Recycled content value of product assembly by weight.
2. IEQ – Indoor Environmental Quality
1. IEQ Credit 4.1: Low-Emitting Materials – Adhesives and Sealants
1. Product data on adhesives and sealants to comply with standards for South Coast Air Quality Management District Rule #1168.
3. ID – Innovation in Design
1. ID Credit 1.1 to 1.4: Innovation in Design
1. Teams must apply strategies or measures that demonstrate performance above the requirements in categories and/or innovative performance not specifically addressed by LEED in ID.
1.7Substitutions
A. Materials, accessories and testing specified shall establish the minimum level of quality, performance, dimension and appearance required of any substitution.
B. No substitution will be considered unless a written request to the specifying architect is received for approval at least ten (10) days prior to the established bid date. Evidence shall be submitted to demonstrate equivalency to the products and performance levels specified. A complete description of the substitution including details referenced to the wall panel shown on the contract drawings.
1. Independent test reports verifying compliance with specified performance requirements.
2. A detailed listing of each specification item with which the substitution does not fully comply.
C. The manufacturer or wall panel contractor proposing the substitution shall pay the costs of any other subcontractor affected by the proposed substitution.
1.8Delivery, Storage and Handling
A. Store products in manufacturer’s unopened packaging until ready for installation.
B. Store products off the ground, with panels sloped for drainage and covered to protect factory finishes from damage.
1.9Warranty
A. Manufacturer’s Warranty: Manufacturer’s two (2) year limited warranty that panels are free from defects in materials and workmanship, beginning from the date of substantial completion of installation, but excluding coil coatings (paint finishes) covered under a separate warranty.
B. The installation contractor shall issue a separate one (1) year warranty against defects in installed materials and workmanship, beginning from the date of substantial completion of the installation.
C. Submit exterior paint manufacturer’sforty (40) year limited warranty on paint finish against cracking, peeling andblistering. Exterior paint manufacturer’s twenty (20) year limited warranty on paint finish against chalk and color change.
Note to Specifier: No finish warranty is offered for painted surfaces exposed to the interior side of the building.
PART 2 – PRODUCTS
2.1 Acceptable Manufacturer:
A. ThermalSafe® Fire Resistant Wall Panels as manufactured by Metl-Span of Lewisville, TX, 75057, USA, Phone: (972) 221-6656, Fax: (972) 420-9382, Email: Website: www.metlspan.com.
2.2 Panel Design
A. Panel: General Requirements – ThermalSafe®Fire Resistant Panel, roll-formed exterior and interior steel sheet faces laminated to a structural mineral wool core.
1. Module Width: 42″ (106.68 cm)
2. Light Mesa exterior and interior face, 1/32″ deep. Both faces embossed.
3. Thickness: nominal 4″ (10.16 cm), 5″ (12.7 cm), 6″ (15.24 cm), 7″ (17.78 cm), 8″ (20,32) cm
4. Exterior Face: G-90 galvanized stucco embossed painted steel, minimum Grade 33 and/or AZ-50 Aluminum-Zinc stucco embossed painted steel, minimum Grade 33 in 26 ga (0.0187”), 24 ga (0.0236”)
5. Interior Face: G-90 galvanized stucco embossed painted steel, minimum Grade 33 and/or AZ-50 Aluminum-Zinc stucco embossed painted steel, minimum Grade 33 in 26 ga (0.0187″), 24 ga (0.0236″)
Note to Specifier: 22 Ga is not available on ThermalSafe Panel.
6. Exterior Finish: One coat 70% polyvinylidene fluoride (PVDF) coil coating, nominal 0.7 mil (0.02 mm), over 0.2 mil (0.005 mm) primer; color as selected by Architect from manufacturer’s standard colors.
Note to Specifier: Thick mil coatings for aggressive environments are available at extra cost. Silicone polyester is also available. Consult the factory or website at metlspan.com for complete information.
7. Interior Finish: One coat factory applied Polyester coil coating nominal 0.7 mil (0.02 mm) in Igloo White, over 0.2 mil (0.005 mm) primer.
8. Mineral Core Properties: Nominal 8.5 lbs. Density, Mineral Wool Fiber made from Basalt Rock and Slag.
B. Side Joint Configuration:
1. The side joints of the ThermalSafe®Fire Resistant panel shall have flush double tongue and groove joinery of the metal faces combined with the LockGuard®integral spline for uninterrupted continuity of the mineral wool core.
2. Through-panel fasteners or exterior or interior applied fasteners that attach both faces of the panel at the connections of the panel ends to the support framing to conform to the requirements of the panel’s fire resistant ratings. At intermediate support locations, though fasteners or back fastened structural rivets specified by Metl-Span may be installed
C. Sealants: If required, Silicone Sealants shall be field applied to the panel joints and perimeter conditions.
Note to Specifier: Silicone sealant is always required for fire resistant rating and moisture protection of the mineral fiber core.
D. Flashing and trim shall be brake-formed sheet metal in the same thickness and finish to match the panels.
PART 3 – EXECUTION
3.1 Examination
A. Panel installer shall examine all structural steel before beginning installation to ensure that all supporting members are straight, level, plumb, properly braced and satisfactory for panel installation.
B. Do not begin installation until unsatisfactory conditions are corrected.
C. Start of installation shall signify structure and adjacent conditions as being proper and acceptable.
D. Wall framing alignment:
1. The proper alignment of wall framing members to the specified steel line is necessary to assure the proper fit up of the overall construction.
2. When the wall panels are installed over intermediate wall framing members, any misalignment between adjacent members will cause deflection (bending) of the panels as they are connected to the misaligned members. This will cause installation difficulty when attempting to join a straight panel to the deflected installed panel. The deflected panels are also subjected to bending stress which may cause panel face rippling or buckling when combined with conditions of thermal stress and wind stress.
3. Before starting the panel installation, the wall framing must be checked for straightness and alignment, and must be checked to verify that the wall panels can be installed without interference.