USACE / NAVFAC / AFCESA / NASA UFGS-07 42 63 (January 2008)
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Preparing Activity: NAVFAC Superseding
UFGS-07 40 00.00 40 (July 2007)
UFGS-07 61 13.00 10 (July 2007)
UNIFIED FACILITIES GUIDE SPECIFICATIONS
References are in agreement with UMRL dated January 2009
SECTION 07 42 63
FABRICATED WALL PANEL ASSEMBLIES
01/08
NOTE: This guide specification covers the requirements for both factory color
and mill finish fabricated aluminum or steel structural metal wall panel assemblies.
Edit this guide specification for project specific requirements by adding, deleting,
or revising text. For bracketed items, choose applicable items(s) or insert
appropriate information.
Remove information and requirements not required in respective project, whether
or not brackets are present.
Comments and suggestions on this guide specification are welcome and should
be directed to the technical proponent of the specification. A listing of technical
proponents, including their organization designation and telephone number, is
on the Internet.
Recommended changes to a UFGS should be submitted as a Criteria Change Request
(CCR).
NOTE: Coordinate this section with other system components specifications such
as framing, insulation and sheet metal flashing. Also coordinate with applicable
Unified Facilities Criteria as it relates to the specific project.
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(2005; Errata 2005) Aluminum Design ManualAA ASD1(2006; Errata 2007) Aluminum Standards and Data][AMERICAN ARCHITECTURAL MANUFACTURERS ASSOCIATION (AAMA)AAMA 501.1(2005) Methods of Test for Exterior Walls][AMERICAN INSTITUTE OF STEEL CONSTRUCTION (AISC)AISC 341(2005; Supp 2005) Seismic Provisions for Structural Steel Buildings][AMERICAN IRON AND STEEL INSTITUTE (AISI)AISI SG03-3(2002) Cold-Formed Steel Design Manual SetAISI/COS/NASPEC(2001, Supplement 2004) North American Specification for the Design of Cold-Formed Steel Structural Members][AMERICAN SOCIETY OF CIVIL ENGINEERS (ASCE)ASCE/SEI 7-05(2006) Minimum Design Loads for Buildings and Other Structures, Including Supplement No. 1][AMERICAN WELDING SOCIETY (AWS)AWS A5.1/A5.1M(2004; Errata 2004) Carbon Steel Electrodes for Shielded Metal Arc WeldingAWS D1.1/D1.1M(2008) Structural Welding Code - SteelAWS D1.2/D1.2M(2008) Structural Welding Code - Aluminum][ASTM INTERNATIONAL (ASTM)ASTM A 1008/A 1008M(2008a) Standard Specification for Steel, Sheet, Cold-Rolled, Carbon, Structural, High-Strength Low-Alloy and High-Strength Low-Alloy with Improved Formability, Solution Hardened, and Bake HardenedASTM A 123/A 123M(2008) Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel ProductsASTM A 36/A 36M(2008) Standard Specification for Carbon Structural SteelASTM A 424(2006) Standard Specification for Steel Sheet for Porcelain EnamelingASTM A 463/A 463M(2006) Standard Specification for Steel Sheet, Aluminum-CoatedASTM A 606(2004) Standard Specification for Steel Sheet and Strip, High-Strength, Low-Alloy, Hot-Rolled and Cold-Rolled, with Improved Atmospheric Corrosion ResistanceASTM A 653/A 653M(2008) Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip ProcessASTM A 755/A 755M(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 ProductsASTM A 780(2001; R 2006) Standard Practice for Repair of Damaged and Uncoated Areas of Hot-Dip Galvanized CoatingsASTM A 792/A 792M(2008) Standard Specification for Steel Sheet, 55% Aluminum-Zinc Alloy-Coated by the Hot-Dip ProcessASTM A 924/A 924M(2008a) Standard Specification for General Requirements for Steel Sheet, Metallic-Coated by the Hot-Dip ProcessASTM B 117(2007a) Standing Practice for Operating Salt Spray (Fog) ApparatusASTM B 209(2007) Standard Specification for Aluminum and Aluminum-Alloy Sheet and PlateASTM B 209M(2007) Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate (Metric)ASTM C 273/C 273M(2007a) Shear Properties of Sandwich Core MaterialsASTM C 286(1999; 2004) Standard Terminology Relating to Porcelain Enamel and Ceramic-Metal SystemsASTM C 553(2008) Standard Specification for Mineral Fiber Blanket Thermal Insulation for Commercial and Industrial ApplicationsASTM C 612(2004e1) Mineral Fiber Block and Board Thermal InsulationASTM C 920(2008) Standard Specification for Elastomeric Joint SealantsASTM D 1056(2007) Standard Specification for Flexible Cellular Materials - Sponge or Expanded RubberASTM D 1308(2002; R 2007) Effect of Household Chemicals on Clear and Pigmented Organic FinishesASTM D 1621(2004a) Compressive Properties of Rigid Cellular PlasticsASTM D 1622(2008) Apparent Density of Rigid Cellular PlasticsASTM D 1667(2005) Flexible Cellular Materials - Poly (Vinyl Chloride) Foam (Closed-Cell)ASTM D 2244(2007) Calculation of Color Tolerances and Color Differences from Instrumentally Measured Color CoordinatesASTM D 2247(2002) Testing Water Resistance of Coatings in 100% Relative HumidityASTM D 2794(1993; R 2004) Resistance of Organic Coatings to the Effects of Rapid Deformation (Impact)ASTM D 2856(1994; R 1998) Open-Cell Content of Rigid Cellular Plastics by the Air PycnometerASTM D 3363(2005) Film Hardness by Pencil TestASTM D 4214(2007) Standard Test Method for Evaluating the Degree of Chalking of Exterior Paint FilmsASTM D 522(1993a; R 2008) Mandrel Bend Test of Attached Organic CoatingsASTM D 523(2008) Standard Test Method for Specular GlossASTM D 714(2002e1) Evaluating Degree of Blistering of PaintsASTM D 822(2001; R 2006) Filtered Open-Flame Carbon-Arc Exposures of Paint and Related CoatingsASTM D 968(2005e1) Abrasion Resistance of Organic Coatings by Falling AbrasiveASTM E 119(2008a) Standard Test Methods for Fire Tests of Building Construction and MaterialsASTM E 136(2004) Behavior of Materials in a Vertical Tube Furnace at 750 Degrees CASTM E 1592(2005) Structural Performance of Sheet Metal Roof and Siding Systems by Uniform Static Air Pressure DifferenceASTM E 283(2004) Determining the Rate of Air Leakage Through Exterior Windows, Curtain Walls, and Doors Under Specified Pressure Differences Across the SpecimenASTM E 331(2000) Water Penetration of Exterior Windows, Skylights, Doors, and Curtain Walls by Uniform Static Air Pressure DifferenceASTM E 84(2008a) Standard Test Method for Surface Burning Characteristics of Building MaterialsASTM G 23(1996) Operating Light-Exposure Apparatus (Carbon-Arc Type) With and Without Water for Exposure of Nonmetallic Materials][METAL BUILDING MANUFACTURERS ASSOCIATION (MBMA)MBMA MBSM(2002) Metal Building Systems Manual][NATIONAL ASSOCIATION OF ARCHITECTURAL METAL MANUFACTURERS (NAAMM)NAAMM AMP 500(2006) Metal Finishes Manual][PORCELAIN ENAMEL INSTITUTE (PEI)PEI 1001(1996) Specification for Architectural Porcelain Enamel (ALS-100)PEI CG-3(2005) Color Guide for Architectural Porcelain Enamel][SHEET METAL AND AIR CONDITIONING CONTRACTORS' NATIONAL ASSOCIATION (SMACNA)SMACNA 1793(2006) Architectural Sheet Metal Manual, Sixth Edition, Second Printing][UNDERWRITERS LABORATORIES (UL)UL 580(2006) Tests for Uplift Resistance of Roof AssembliesUL Bld Mat Dir(2008) Building Materials Directory]1.2 DEFINITIONS
Fabricated Wall Panel Assembly: Metal wall and liner panels, attachment system components, miscellaneous metal
framing, thermal insulation, and accessories shop fabricated or field assembled for a complete weather-tight
wall system.
1.3 DESCRIPTION OF FABRICATED WALL PANEL ASSEMBLY SYSTEM
NOTE: Coordinate with Part 2 materials specification.
In the first sentence, select finish type, metal type, attachment type and delete
other options.
In the second sentence, select a combination of options as necessary to describe
the generic profile required. Include the last bracketed option of the second
sentence when generic profile is shown on drawings. Show panel profile, cross-section,
and dimensions on the drawings when a particular aesthetic appearance is desired.
[Factory color finished,][Mill finish][ galvanized][ galvalume][ aluminum] metal wall panel system with [concealed
fastening][exposed fastener] attachment. Panel profile must be [embossed][recessed seam lock][flush face][smooth
face][recessed bead][raised bead][striated][square ribbed][beaded rib][roll lock seam][snap lock seam][box rib][corrugated][standing
seam][batten seam][ and with stiffening ribs in the flat of the panel][as shown on drawings]. Interior finish
of panel assembly to be [_____].
1.3.1 Metal Wall Panel General Performance
Comply with performance requirements, conforming to AISI/COS/NASPEC, without failure due to defective manufacture,
fabrication, installation, or other defects in construction. Wall panels and accessory components must conform
to the following standards:
ASTM A 1008/A 1008M
ASTM A 123/A 123M
ASTM A 36/A 36M
[ASTM A 424, ASTM C 286, PEI 1001, PEI CG-3 for Porcelain and Ceramic Enameling
]ASTM A 653/A 653M
[ASTM A 463/A 463M for aluminum coated steel sheet
]ASTM A 606
[ASTM A 755/A 755M for metallic coated steel sheet for exterior coil pre-painted applications.
][ASTM A 780 for repair of damage or uncoated areas of hot-dipped galvanized coating.
][ASTM A 924/A 924M for metallic coated steel sheet
]ASTM C 273/C 273M
ASTM D 522 for applied coatings
UL Bld Mat Dir
1.3.2 Structural Performance
Maximum calculated fiber stress must not exceed the allowable value in the AISI or AA manuals; a one third
overstress for wind is allowed. Midspan deflection under maximum design loads is limited to L/180. Contract
drawings show the design wind loads and the extent and general assembly details of the metal siding. Contractor
must provide design for members and connections not shown on the drawings. Siding panels and accessories must
be the products of the same manufacturer.
Provide metal wall panel assemblies complying with the load and stress requirements in accordance with ASTM E 1592
. Wind Load force due to wind action governs the design for panels.
Wall systems and attachments are to resist the wind loads as determined by UL 580 and ASCE/SEI 7-05 in the geographic
area where the construction will take place, in pounds per square foot. Submit [five][_____] copies of wind
load tests and seismic tests to the Contracting Officer.
[Provide metal wall panel assembly for seismic conditions complying with the applicable requirements of AISC 341
.
]
1.3.3 Air Infiltration
Air leakage must conform to the limits through the wall assembly area when tested according to ASTM E 283.
1.3.4 Water Penetration Under Static Pressure
No water penetration when tested according to ASTM E 331.
1.3.5 Water Penetration Under Dynamic Pressure
No evidence of water leakage when tested according to AAMA 501.1.
1.4 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 01 33 00 SUBMITTAL PROCEDURES:
SD-01 Preconstruction Submittals
Qualification of Manufacturer
Qualification of Installer
Qualifications for Welding Work
SD-02 Shop Drawings
Fabrication and Installation drawings for the following items are to indicate completely dimensioned
structural frame and erection layouts, openings in the wall, special framing details, and construction
details at corners, building intersections and flashing, location and type of mastic and metal
filler strips.
Wall Panel Assemblies
Flashing and Accessories
Anchorage Systems
SD-03 Product Data
Submit Manufacturer's data indicating percentage of recycle material in wall panels to verify
sustainable acquisition compliance.
Submit Manufacturer's catalog data for the following items:
Factory Color Finish
Sub-girts and Formed Shapes
Closure Materials
Insulation
Pressure Sensitive Tape
Sealants and Caulking
Rated Wall Assembly
Galvanizing Repair Paint
Enamel Repair Paint
Aluminized Steel Repair Paint
Accessories
SD-04 Samples
Submit as required each of the following samples:
Wall Panel Assemblies, 12 inches long by actual panel width
Fasteners
Metal Closure Strips, 250 millimeter 10 inches long of each type
Insulation, approximately 200 by 280 millimeter 8 by 11 inches
Submit manufacturer's color charts and chips, approximately 4 by 4 inches, showing full range
of colors, textures and patterns available for wall panels with factory applied finishes.
SD-05 Design Data
wind design analysis
SD-06 Test Reports
Submit test reports for the following in accordance with the referenced articles in this section.
Leakage Tests
wind load tests
seismic tests
Coatings and base metals of metal wall type of test as specified in paragraphs entitled, "Steel
Sheet Materials," and in various referenced standards in this section.
Factory Color Finish Performance Requirements
SD-07 Certificates
Submit certificates for the following items showing conformance with referenced standards
contained in this section:
Fasteners
Galvanizing Repair Paint
Enamel Repair Paint
Provide evidence that products used within this specification are manufactured in the United
States.
Qualification of Manufacturer
Certify that the manufacturer of the metal wall panel system meets requirements specified
under paragraph entitled "Qualification of Manufacturer."
Qualification of Installer
Certify that the applicator meets requirements specified under paragraph entitled "Qualification
of Installation Contractor."
Submit the wall system assembly wind load and fire rating classification listings.
SD-08 Manufacturer's Instructions
Installation of Wall panels
Include detailed application instructions and standard manufacturer drawings altered as required
by these specifications. Explicitly identify in writing, differences between manufacturer's
instructions and the specified requirements.
SD-11 Closeout Submittals
Warranty
Instructions To:
Government and/or Contractor Personnel
Include copies of Material Safety Data Sheets for maintenance/repair materials.
Submit 20 year "No-Dollar-Limit" warranty for labor and materials.
1.5 QUALITY ASSURANCE
1.5.1 Pre-Installation Conference
After submittals are received and approved but before wall panel and insulation work, including associated
work, is performed, the Contracting Officer will hold a pre-siding conference to review the following:
a. The drawings, including Fabrication and Installation drawings,showing complete Wall Panel Assemblies
, and specifications.
Include details for the following for review:
flashing and accessories
anchorage systems
manufacturer's catalog data
Factory Color Finish
Submit manufacturer's color charts and chips, approximately 10 by 10 cm 4 by 4 inches, showing
full range of colors, textures and patterns available for wall panels with factory applied finishes.
Sub-girts and Formed Shapes
Closure Materials, including metal closure strips.
Insulation
Pressure Sensitive Tape
Rated Wall Assembly test data
Accessories
Fasteners
b. Finalize construction schedule and verify availability of materials, Installer's personnel, equipment,
and facilities needed to make progress and avoid delays.
c. Methods and procedures related to metal wall panel installation, including manufacturer's written
instructions for Installation of Wall panels, and veriication of wall system assembly wind load and fire
rating classification listings.
d. Support conditions for compliance with requirements, including alignment between and attachment to
structural members. Provide details of wind design analysis including wind speed, exposure category,
co-efficient, importance factor, designates type of facility, negative pressures for each zone, methods
and requirements of attachment. Wind design analysis to include wall plan delineating dimensions and
attachment patterns for each zone. Wind design analysis to be prepared and sealed by Licensed Project
Engineer in the geographic area where the construction will take place.
e. Flashing, special siding details, wall penetrations, openings, and condition of other construction
that will affect metal wall panels.
f. Governing regulations and requirements for insurance, certificates, tests and inspections if applicable.
Include certification for sustainable acquisition and wall system assembly wind load and fire rating
classification. Safety plan review must include applicable Material Safety Data Sheets.
g. Temporary protection requirements for metal wall panel assembly during and after installation.
h. Wall panel observation and repair procedures after metal wall panel installation. Include review
of sample [Galvanizing Repair Paint][Enamel Repair Paint][Aluminized Steel Repair Paint].
i. Sample [20 year "No-Dollar-Limit" warranty][Warranty].
1.5.2 Manufacturer's Technical Representative
The representative must have authorization from manufacturer to approve field changes and be thoroughly familiar
with the products and installations in the geographical area where construction will take place.
1.5.3 Qualification of Manufacturer
Metal wall panel system manufacturer must have:
a. A minimum of five (5) years experience in manufacturing metal wall system and accessory products.
b. Provide engineering services by an authorized engineer; currently licensed in the geographical area
where construction will take place, having a minimum of four (4) years experience as an engineer knowledgeable
in wind load design analysis, protocols and procedures for the MBMA MBSM; ASCE/SEI 7-05, and ASTM E 1592
.
Provide certified engineering calculations using the products submitted for:
Wind load requirements in accordance with FM Wind Design Guide and ASCE/SEI 7-05.
1.5.4 Qualification of Installer
The installation contractor must be approved and certified by the wall panel manufacturer prior to beginning
the installation of the metal wall system.
1.5.4.1 Qualifications for Welding Work
Welding procedures must conform to AWS A5.1/A5.1M, AWS D1.1/D1.1M for steel or AWS D1.2/D1.2M for aluminum.
1.5.5 Single Source
Obtain each type of metal wall and liner panels, clips, closures and other accessories from the standard products
of the single source from a single manufacturer to operate as a complete system for the intended use.
1.5.6 Surface-Burning Characteristics
Provide metal wall panels having insulation core material with the following surface-burning characteristics
as determined by testing identical products according to ASTM E 84 by a qualified testing agency. Identify products
with appropriate markings of applicable testing agency.
a. Flame-Spread Index: [25] [ ] or less.
b. Smoke-Developed Index: [450] [ ] or less.
1.5.7 Fire-Resistance Ratings
Where indicated, provide metal wall panels identical to those of assemblies tested for fire resistance per ASTM E 119
by a qualified testing agency. Identify products with appropriate markings of applicable testing agency.
Indicate design designations from UL's "Fire Resistance Directory" or from the listings of another qualified
testing agency.
Combustion Characteristics: ASTM E 136.
1.5.8 Fabrication
Fabricate and finish metal wall panels and accessories at the factory to greatest extent possible, by manufacturer's
standard procedures and processes and as necessary to fulfill indicated performance requirements. Comply with
indicated profiles and with dimensional and structural requirements.
Provide panel profile, including major ribs and intermediate stiffening ribs, if any, for full length of panel.
Fabricate metal wall panel side laps with factory-installed captive gaskets or separator strips that provide
a tight seal and prevent metal-to-metal contact, in a manner that will seal weather-tight and minimize noise
from movements within panel assembly.
1.5.8.1 Sheet Metal Accessories
Fabricate flashing and trim to comply with recommendations in SMACNA 1793 that apply to the design, dimensions,
metal, and other characteristics of item indicated:
a. Form exposed sheet metal accessories that are without excessive oil canning, buckling, and tool marks
and that are true to line and levels indicated, with exposed edges folded back to form hems.
b. End Seams: Fabricate nonmoving seams with flat-lock seams. Form seams and seal with epoxy seam
sealer. Rivet joints for additional strength.
c. Sealed Joints: Form non-expansion but movable joints in metal to accommodate elastomeric sealant
to comply with SMACNA standards.
d. Conceal fasteners and expansion provisions where possible. Exposed fasteners are not allowed on
faces of accessories exposed to view.
e. Fabricate cleats and attachment devices of size and metal thickness recommended by SMACNA or by metal
wall panel manufacturer for application, but not less than thickness of metal being secured.
1.5.9 Finishes
Comply with NAAMM AMP 500 for recommendations for applying and designating finishes.
Appearance of Finished Work: Noticeable variations in same piece are not acceptable. Variations in appearance
of adjoining components are acceptable if they are within the range of approved Samples and are assembled or
installed to minimize contrast.
1.6 DELIVERY, HANDLING, AND STORAGE
Deliver and package components, sheets, metal wall panels, and other manufactured items so as not to be damaged
or deformed and protected during transportation and handling.
Unload, store, and erect metal wall panels in a manner to prevent bending, warping, twisting, and surface damage.
Stack and store metal wall panels horizontally on platforms or pallets, covered with suitable weather-tight and
ventilated covering to ensure dryness, with positive slope for drainage of water. Do not store metal wall panels
in contact with other materials that might cause staining, denting, or other surface damage.
Retain strippable protective covering on metal wall panel for period of metal wall panel installation.
Protect foam-plastic insulation as follows:
a. Do not expose to sunlight, except to extent necessary for period of installation and concealment.
b. Protect against ignition at all times. Do not deliver foam-plastic insulation materials to Project
site before installation time.
Complete installation and concealment of plastic materials as rapidly as possible in each area of construction.
1.7 PROJECT CONDITIONS
Weather Limitations: Proceed with installation preparation only when existing and forecasted weather conditions
permit Work to proceed without water entering into existing walling system or building.
Field Measurements: Verify locations of wall framing and opening dimensions by field measurements before metal
wall panel fabrication and indicate measurements on Shop Drawings.
1.8 WARRANTY
Furnish manufacturer's no-dollar-limit warranty for the metal wall panel system. The warranty period is to be
no less than twenty (20) years from the date of Government acceptance of the work. The warranty is to be issued
directly to the Government. The warranty is to provide that if within the warranty period the metal wall panel
system shows evidence of corrosion, perforation, rupture or excess weathering due to deterioration of the wall
panel system resulting from defective materials and correction of the defective workmanship is to be the responsibility
of the metal wall panel system manufacturer. Repairs that become necessary because of defective materials and
workmanship while metal wall panel system is under warranty are to be performed within 24 hours after notification,
unless additional time is approved by the Contracting Officer. Failure to perform repairs within 24 hours of
notification will constitute grounds for having emergency repairs performed by others and not void the warranty.
PART 2 PRODUCTS
2.1 PANEL MATERIALS
[2.1.1 Aluminum Sheet
Roll-form aluminum wall and liner panels to the specified profile, with fy = [30] [40] [50] [80] ksi, [.032 ]
[.040 ] [.050 ] thickness and depth as indicated. Material must be plumb and true, and within the tolerances
listed:
a. Aluminum Sheet conforming to ASTM B 209MASTM B 209, AA ASD1 and AA ADM1.
b. Individual panels to have continuous length to cover the entire length of any wall area with no joints
or seams and formed without warping, waviness, or ripples that are not part of the panel profile and
free of damage to the finish coating system.
c. Provide panels with thermal expansion and contraction consistent with the type of system specified.
[1. Profile and coverage to be a minimum height and width from manufacturer s standard for the
indicated wall area.]
[2. Profile to be a 3.8 cm 1-1/2 inch high rib at30.5 cm 12 inches o.c. with small stiffening
ribs,96.5 cm 38 inch overall width with 91.5 cm36 inch coverage and exposed fasteners.]
[3. Profile to be a 1-1/2 inch high rib at 7.2 inches o.c., 38-7/8 inch overall width with 36
inch coverage and exposed fasteners.]
[4. Profile to be a 1 inch high rib at 4 inches o.c., 49-5/8 inch overall width with [48] [44]
inch coverage and exposed fasteners.]
[5. Profile to be a 1 inch high rib at 8 inches o.c., 41-5/8 inch overall width with 40 inch
coverage and exposed fasteners.]
[6. Profile to be a 1-3/4 inch high V-beam rib at 5 inches o.c., 44-7/8 inch overall width with
42 inch coverage and exposed fasteners.]
[7. Profile to be a 7/8 inch high corrugated rib at 2 inches o.c., 38-7/8 inch overall width
with 36 inch coverage and exposed fasteners.]
[8. Profile to be a 3 inch high standing seam, 24 inch coverage, factory-caulked and mechanical
crimping or snap-together seams with concealed clips and fasteners.]
[9. Profile to be a [1] [1-3/4] [2] [2-1/2] inch high standing seam, [12] [16] [18] inch coverage,
with mechanical crimping or snap-together seams with concealed clips and fasteners.]
10. [Smooth, flat ][Embossed ] surface texture.
][2.1.2 Steel Sheet
Roll-form steel wall and liner panels to the specified profile, with fy = [30] [40] [50] [80] ksi, [26] [24]
[22] [20] [18] gauge and depth as indicated. Material must be plumb and true, and within the tolerances listed:
[1. Galvanized Steel Sheet conforming to ASTM A 653/A 653M and AISI SG03-3.]
[2. Aluminum-Zinc Alloy-coated Steel Sheet conforming to ASTM A 792/A 792M and AISI SG03-3.]
3. Individual panels to have continuous length to cover the entire length of any unbroken wall area
with no joints or seams and formed without warping, waviness, or ripples that are not part of the panel
profile and free of damage to the finish coating system.
4. Provide panels with thermal expansion and contraction consistent with the type of system specified.
[a. Profile and coverage to be a minimum height and width from manufacturer's standard for the
indicated wall area.]
[b. Profile to be a 1-1/2 inch high rib at 12 inches o.c. with small stiffening ribs, 38 inch
overall width with 36 inch coverage and exposed fasteners.]
[c. Profile to be a 1-1/2 inch high rib at 7.2 inches o.c., 38-7/8 inch overall width with 36
inch coverage and exposed fasteners.]
[d. Profile to be a 1 inch high rib at 4 inches o.c., 49-5/8 inch overall width with [48] [44]
inch coverage and exposed fasteners.]
[e. Profile to be a 1 inch high rib at 8 inches o.c., 41-5/8 inch overall width with 40 inch
coverage and exposed fasteners.]
[f. Profile to be a 7/8 inch high corrugated rib at 2 inches o.c., 38-7/8 inch overall width
with 36 inch coverage and exposed fasteners.]
[g. Profile to be a 3 inch high standing seam, 24 inch coverage, factory-caulked and mechanical
crimping or snap-together seams with concealed clips and fasteners.]
[h. Profile to be a [1] [1-3/4] [2] [2-1/2] inch high standing seam, [12] [16] [18] inch coverage,
with mechanical crimping or snap-together seams with concealed clips and fasteners.]
i. [Smooth, flat ][Embossed ]surface texture.
][2.1.3 Foam-Insulation Core Wall Panel
Provide factory-formed[ aluminum][ steel] wall panel assembly fabricated from two sheets of metal with modified
polyisocyanurate or polyurethane foam insulation core[ foamed-in-place][ board] during fabrication with joints
between panels designed to form weather-tight seals. Include accessories required for weather-tight installation.
a. Closed-Cell Content: 90 percent when tested according to ASTM D 2856.
b. Density: 2.0 to 2.6 lb/cu. ft. (32 to 42 kg/cu. m) when tested according to ASTM D 1622.
c. Compressive Strength: Minimum 20 psi (140 kPa) when tested according to ASTM D 1621.
d. Shear Strength: 26 psi (179 kPa) when tested according to ASTM C 273/C 273M.
]2.1.4 Insulated Panel Construction
Shop fabricate or field assemble insulated panel construction with specified exterior and interior[ aluminum][
steel] sheet in accordance with manufacturer's printed instructions.
Insulation to be[ glass-fiber][ slag-wool-fiber][ rock-wool-fiber] conforming to ASTM C 553 and ASTM C 612 of
thickness and density as required for the geographical area where construction will take place. Glass-Fiber and
Mineral-Wool-Fiber are materials listed in the EPA's Comprehensive Procurement Guidelines (CPG) (http://www.epa.gov/cpg/
).
Insulation fasteners to be adhesively attached, plate welded to projecting spindle anchors; capable of holding
insulation of thickness indicated, secured in position with self-locking washer and complying with the following
requirements:
a. Plate: Perforated galvanized carbon-steel sheet, 0.030 inch (0.762 mm) thick by 2 inches (50 mm)
square.
b. Spindle: Copper-coated, low carbon steel; fully annealed; 0.105 inch (2.67 mm) in diameter; length
to suit depth of insulation indicated.
c. Insulation-Retaining Washers: Self-locking washers formed from 0.016-inch- (0.41-mm-) thick galvanized
steel sheet, with beveled edge for increased stiffness, sized as required to hold insulation securely
in place, but not less than 1-1/2 inches (38 mm) square or in diameter.
d. Anchor adhesive to be a product with demonstrated capability to bond insulation anchors securely
to substrates indicated without damaging insulation, fasteners, and substrates.
2.1.5 Finish
All panels are to receive a factory-applied[ polyvinylidene fluoride][ Kynar 500/Hylar 5000] [_____] finish consisting
of a baked-on top-coat with a manufacturer's recommended prime coat conforming to the following:
a. Metal Preparation: All metal is to have the surfaces carefully prepared for painting on a continuous
process coil coating line by alkali cleaning, hot water rinsing, application of chemical conversion coating,
cold water rinsing, sealing with acid rinse, and thorough drying.
b. Prime Coating: A base coat of epoxy paint, specifically formulated to interact with the top-coat,
is to be applied to the prepared surfaces by roll coating to a dry film thickness of 0.20 + 0.05 mils.
This prime coat must be oven cured prior to application of finish coat.
c. Exterior Finish Coating: Apply the finish coating over the primer by roll coating to dry film thickness
of 0.80 + 5 mils (3.80 + 0.50 mils for Vinyl Plastisol) for a total dry film thickness of 1.00 + 0.10
mils (4.00 + 0.10 mils for Vinyl Plastisol). This finish coat must be oven-cured.
d. Interior Finish Coating: Apply a wash-coat on the reverse side over the primer by roll coating to
a dry film thickness of 0.30 + 0.05 mils for a total dry film thickness of 0.50 + 0.10 mils. The wash-coat
must be oven-cured.
e. Color: The exterior finish chosen from the manufacturer's standard color chart.
f. Physical Properties: Coating must conform to the industry and manufacturer's standard performance
criteria as listed by the following certified test reports:
Chalking: ASTM D 4214
Color Change and Conformity: ASTM D 2244
Weatherometer: ASTM G 23 and ASTM D 822
Humidity: ASTM D 2247 and ASTM D 714
Salt Spray: ASTM B 117
Chemical Pollution: ASTM D 1308
Gloss at 60: ASTM D 523
Pencil Hardness: ASTM D 3363
Reverse Impact: ASTM D 2794
Flexibility: ASTM D 522
Abrasion: ASTM D 968
Flame Spread: ASTM E 84
2.2 MISCELLANEOUS METAL FRAMING
2.2.1 General
Cold-formed metallic-coated steel sheet conforming to ASTM A 653/A 653M and specified in Division 05 Section
05 40 00 "Cold-Formed Metal Framing" unless other wise indicated.
2.2.2 Fasteners for Miscellaneous Metal Framing
Type, material, corrosion resistance, size and sufficient length to penetrate the supporting member a minimum
of 2.54 cm 1 inch with other properties required to fasten miscellaneous metal framing members to substrates
in accordance with the wall panel manufacturer's and ASCE/SEI 7-05 requirements.
2.3 FASTENERS
2.3.1 General
Type, material, corrosion resistance, size and sufficient length to penetrate the supporting member a minimum
of 1 inch with other properties required to fasten miscellaneous metal framing members to substrates in accordance
with the wall panel manufacturer's and ASCE/SEI 7-05 requirements.
2.3.2 Exposed Fasteners
Fasteners for wall panels to be corrosion resistant coated steel, aluminum, stainless steel, or nylon capped
steel compatible with the sheet panel or flashing and of a type and size recommended by the manufacturer to meet
the performance requirements and design loads. Fasteners for accessories to be the manufacturer's standard.
Provide an integral metal washer matching the color of attached material with compressible sealing EPDM gasket
approximately 3/32 in. thick.
2.3.3 Screws
Screws to be corrosion resistant coated steel, aluminum and/or stainless steel being the type and size recommended
by the manufacturer to meet the performance requirements.
2.3.4 Rivets
Rivets to be closed-end type, corrosion resistant coated steel, aluminum or stainless steel where watertight
connections are required.
2.3.5 Attachment Clips
Fabricate clips from steel hot-dipped galvanized in accordance with ASTM A 653/A 653M, or Series [300][305] stainless
steel. Size, shape, thickness and capacity as required meeting the insulation thickness and design load criteria
specified.
2.4 ACCESSORIES
2.4.1 General
All accessories to be compatible with the metal wall panels. Sheet metal flashing, trim, metal closure strips,
caps and similar metal accessories must not be less than the minimum thickness specified for the wall panels.
Exposed metal accessories/finishes to match the panels furnished, except as otherwise indicated. Molded foam
rib, ridge and other closure strips to be non-absorbent closed-cell or solid-cell synthetic rubber or pre-molded
neoprene to match configuration of the panels.
2.4.2 Rubber Closure Strips
Closed-cell, expanded cellular rubber conforming to ASTM D 1056 and ASTM D 1667; extruded or molded to the configuration
of the specified wall panel and in lengths supplied by the wall panel manufacturer.
2.4.3 Metal Closure Strips
Factory fabricated[ aluminum][ steel] closure strips to be the same[ gauge][ thickness], color, finish and profile
of the specified wall panel.
2.4.4 Joint Sealants
2.4.4.1 Sealants and Caulking
Sealants are to be an approved gun type for use in hand- or air-pressure calking guns at temperatures above 40
degrees F 4 degrees C (or frost-free application at temperatures above 10 degrees F minus 12 degrees C) with
minimum solid content of 85 percent of the total volume. Sealant is to dry with a tough, durable surface skin
which permits it to remain soft and pliable underneath, providing a weather-tight joint. No migratory staining
is permitted on painted or unpainted metal, stone, glass, vinyl, or wood.
Prime all joints to receive sealants with a compatible one-component or two-component primer as recommended by
the wall panel manufacturer.
2.4.4.2 Shop-Applied
Sealant for shop-applied caulking must be an approved gun grade, non-sag one component polysulfide or silicone
conforming to ASTM C 920, Type II, and with a curing time to ensure the sealant's plasticity at the time of field
erection.
2.4.4.3 Field-Applied
Sealant for field-applied caulking must be an approved gun grade, non-sag one component polysulfide or two-component
polyurethane with an initial maximum Shore A durometer hardness of 25, and conforming to ASTM C 920, Type II.
Color to match panel colors.
2.4.4.4 Tape Sealant
Pressure sensitive, 100% solid with a release paper backing; permanently elastic, non-sagging, non-toxic and
non-staining as approved by the wall panel manufacturer.
2.5 SHEET METAL FLASHING AND TRIM
2.5.1 Fabrication
Shop fabricate sheet metal flashing and trim where practicable to comply with recommendations in SMACNA 1793
that apply to design, dimensions, metal, and other characteristics of item indicated. Obtain field measurements
for accurate fit before shop fabrication.
Fabricate sheet metal flashing and trim without excessive oil canning, buckling, and tool marks and true to line
and levels indicated, with exposed edges folded back to form hems.
2.6 REPAIR OF FINISH PROTECTION
Repair paint for color finish enameled wall panel must be compatible paint of the same formula and color as the
specified finish furnished by the wall panel manufacturer.
PART 3 EXECUTION
3.1 EXAMATION
A. Examine substrates, areas, and conditions, with Installer present, for compliance with requirements for installation
tolerances, metal wall panel supports, and other conditions affecting performance of the Work.
B. Examine primary and secondary wall framing to verify that rafters, purlins, angles, channels, and other structural
panel support members and anchorages have been installed within alignment tolerances required by metal wall panel
manufacturer, UL, ASTM, ASCE/SEI 7-05 and as required for the geographical area where construction will take
place.
C. Examine solid wall sheathing to verify that sheathing joints are supported by framing or blocking and that
installation is within flatness tolerances required by metal wall panel manufacturer.
D. Examine roughing-in for components and systems penetrating metal wall panels to verify actual locations of
penetrations relative to seam locations of metal wall panels before metal wall panel installation.
E. Submit to the Contracting Officer a written report, endorsed by Installer, listing conditions detrimental
to performance of the Work.
F. Proceed with installation only after unsatisfactory conditions have been corrected.
3.2 PREPARATION
A. Clean substrates of substances harmful to insulation, including removing projections capable of interfering
with insulation attachment.
B. Miscellaneous Framing: Install sub-purlins, girts, angles, furring, and other miscellaneous wall panel support
members and anchorage according to metal wall panel manufacturer's written instructions.
3.3 WALL PANEL INSTALLATION
Provide metal wall panels of full length from sill to eave as indicated, unless otherwise indicated or restricted
by shipping limitations. Anchor metal wall panels and other components of the Work securely in place, with provisions
for thermal and structural movement in accordance with MBMA Metal Building Systems Manual.
[1. Steel Wall Panels: Use stainless-steel fasteners for exterior surfaces and galvanized steel fasteners
for interior surfaces.]
[2. Aluminum Wall Panels: Use aluminum or stainless-steel fasteners for exterior surfaces and aluminum
or galvanized steel fasteners for interior surfaces.]
[3. Anchor Clips: Anchor metal wall panels and other components of the Work securely in place, using
manufacturer's approved fasteners according to manufacturer's written instructions.]
4. Metal Protection: Where dissimilar metals will contact each other or corrosive substrates, protect
against galvanic action by painting contact surfaces with bituminous coating, by applying rubberized-asphalt
underlayment to each contact surface, or by other permanent separation as recommended by metal wall panel
manufacturer.
5. Joint Sealers: Install gaskets, joint fillers, and sealants where indicated and where required for
weatherproof performance of metal wall panel assemblies. Provide types of gaskets, fillers, and sealants
indicated or, if not indicated, types recommended by metal wall panel manufacturer.
Erect wall panel system in accordance with the approved erection drawings, the printed instructions and safety
precautions of the manufacturer.
Sheets are not to be subjected to overloading, abuse, or undue impact. Bent, chipped, or defective sheets shall
not be applied.
Sheets must be erected true and plumb and in exact alignment with the horizontal and vertical edges of the building,
securely anchored, and with the indicated eave, and sill.
Work is to allow for thermal movement of the wall panel, movement of the building structure, and to provide permanent
freedom from noise due to wind pressure.
Field cutting metal wall panels by torch is not permitted.
3.4 FASTENER INSTALLATION
Anchor metal wall panels and other components of the Work securely in place, using manufacturer's approved fasteners
according to manufacturer's written instructions.
3.5 FLASHING, TRIM AND CLOSURE INSTALLATION
3.5.1 General Requirements
Comply with performance requirements, manufacturer's written installation instructions, and SMACNA 1793. Provide
concealed fasteners where possible, and set units true to line and level as indicated. Install work with laps,
joints, and seams that will be permanently watertight and weather resistant.
Sheet metalwork is to be accomplished to form weather-tight construction without waves, warps, buckles, fastening
stresses or distortion, and allow for expansion and contraction. Cutting, fitting, drilling, and other operations
in connection with sheet metal required to accommodate the work of other trades is to be performed by sheet metal
mechanics.
3.5.2 Metal Flashing
Exposed metal flashing is to be installed at building corners, sills and eaves, junctions between metal siding
and walling.
Exposed metal flashing is to be the same material, color, and finish as the specified metal wall panel.
Flashing is to be fastened at not more than eight (8) inches on center, except where flashing are held in place
by the same screws that secure covering sheets.
Flashing is to be furnished in at least eight (8) foot lengths. Exposed flashing is to have 1 inch locked and
blind-soldered end joints, and expansion joints at intervals of not more than sixteen (16) feet.
Exposed flashing and flashing subject to rain penetration to be bedded in the specified joint sealant.
Flashing which is in contact with dissimilar metals to be isolated by means of the specified asphalt mastic material
to prevent electrolytic deterioration.
Drips to be formed to the profile indicated, with the edge folded back 1/2 inch to form a reinforced drip edge.
3.5.3 Closures
Install metal closure strips at open ends of corrugated or ribbed pattern walls, and at intersection of wall
and wall unless open ends are concealed with formed eave flashing; and in other required areas.
Install mastic closure strips at intersection of the wall with metal walling; top and bottom of metal siding;
heads of wall openings; and in other required locations.
3.6 WORKMANSHIP
Make lines, arises, and angles sharp and true. Free exposed surfaces from visible wave, warp, buckle, and tool
marks. Fold back exposed edges neatly to form a 1/2 inch hem on the concealed side. Make sheet metal exposed
to the weather watertight with provisions for expansion and contraction.
Make surfaces to receive sheet metal plumb and true, clean, even, smooth, dry, and free of defects and projections
which might affect the application. For installation of items not shown in detail or not covered by specifications
conform to the applicable requirements of SMACNA 1793. Provide sheet metal flashing in the angles formed where
roof decks abut walls, curbs, ventilators, pipes, or other vertical surfaces and wherever indicated and necessary
to make the work watertight.
3.7 ACCEPTANCE PROVISIONS
3.7.1 Erection Tolerances
Erect metal wall panels straight and true with plumb vertical lines correctly lapped and secured in accordance
with the manufacturer's written instructions. Horizontal lines must not vary more than3.175 mm in 12.2 m 1/8
inch in 40 feet.
3.7.2 Leakage Tests
Finished application of metal wall panels are to be subject to inspection and test for leakage by the Contracting
Officer, Architect/Engineer. Inspection and tests will be conducted without cost to the Government.
Inspection and testing is to be made promptly after erection to permit correction of defects and the removal
and replacement of defective materials.
3.7.3 Repairs to Finish
Scratches, abrasions, and minor surface defects of finish may be repaired with the specified repair materials.
Finished repaired surfaces must be uniform and free from variations of color and surface texture.
Repaired metal surfaces that are not acceptable to the project requirements are to be immediately removed and
replaced with new material.
3.7.4 Paint-Finish Metal Siding
Paint-finish metal siding will be tested for color stability by the Contracting Officer during the manufacturer's
specified guarantee period.
Panels that indicate color changes, fading, or surface degradation, determined by visual examination, must be
removed and replaced with new panels at no expense to the Government.
New panels will be subject to the specified tests for an additional year from the date of their installation.
3.8 CLEAN-UP AND DISPOSAL
Clean all exposed sheet metal work at completion of installation. Remove metal shavings, filings, nails, bolts,
and wires from work area. Remove grease and oil films, excess sealants, handling marks, contamination from steel
wool, fittings and drilling debris and scrub the work clean. Exposed metal surfaces to be free of dents, creases,
waves, scratch marks, solder or weld marks, and damage to the finish coating.
Collect and place scrap/waste materials in containers. Promptly dispose of demolished materials. Do not allow
demolished materials to accumulate on-site; transport demolished materials from government property and legally
dispose of them.