SECTION 07421

COMPOSITE METAL BUILDING PANELS

PART 1 GENERAL

SECTION INCLUDES

Preformed metal panel siding system for walls [soffits] [and] [________], with [insulation,] [liners,] related flashings and accessory components.

PRODUCTS FURNISHED BUT NOT INSTALLED UNDER THIS SECTION

Section [_____-__________]: Placement of anchors in [concrete] [masonry] [________] work for attachment of panel components.

RELATED SECTIONS

Section [______-____________]:	Substrate surface.

Section 05120 - Structural Steel: Structural steel building frame.

Section 05400 - Cold Formed Metal Framing: Stud wall framing system.

[Section 07190 - Vapor and Air Barriers.]

Section [______-____________]: Waterproof membrane seal at [bottom] [________] of panels.

[Section 07212 - Board Insulation.]

[Section 07213 - Batt and Blanket Insulation.]

[Section 07270 - Firestopping.]

Section 07465 - Preformed Metal Siding.

Section 07620 - Sheet Metal Flashing and Trim.

Section 07900 - Joint Sealers.

[______-____________]: Metal [cap] [coping] [________] flashings over panels.

[Section [______-____________]: Soffits.]

[Section 08520 - Aluminum Windows.]

Section 13121 - Pre-Engineered Buildings: Building framing system.

REFERENCES

Aluminum Association (AA) - Aluminum Construction Manual: Aluminum Sheet Metal Work and Building Construction.

American Iron and Steel Institute (AISI) - Stainless Steel - Uses in Architecture.

ANSI/ASTM A153 - Zinc Coating (Hot-Dip) on Iron and Steel Hardware.

ANSI/ASTM A167 - Stainless and Heat-Resisting Chromium Nickel Steel Plate, Sheet, and Strip.

ANSI/ASTM A446 - Steel Sheet, Zinc-Coated (Galvanized) by the Hot-Dip Process, Structural (Physical) Quality.

ANSI/ASTM C177 - Steady-State Thermal Transmission Properties by Means of the Guarded Hot-Plate.

ANSI/ASTM D1621 - Compressive Properties of Rigid Cellular Plastics.

ANSI/ASTM D1622 - Apparent Density of Rigid Cellular Plastics.

ANSI/ASTM E330 - Structural Performance of Exterior Windows, Curtain Walls, and Doors by Uniform Static Air Pressure Difference.

ASTM A792 - Steel Sheet, Aluminum-Zinc Alloy Coated by the Hot-Dip Process, Structural (Physical) Quality.

ASTM B209 - Aluminum and Aluminum-Alloy Sheet and Plate.

ASTM C665 - Mineral Fiber Blanket Thermal Insulation for Light Frame Construction and Manufactured Housing.

ASTM D2482 - Wax Pick Test for Surface Strength of Paper.

ASTM E84 - Surface Burning Characteristics of Building Materials.

ASTM E96 - Water Vapor Transmission of Materials.

ASTM E413 - Classification for Determination of Sound Transmission Class.

SYSTEM DESCRIPTION

System: Preformed and pre-finished composite metal building panel system of [horizontal] [and] [vertical] [________] profile; [shop pre-assembled] [site assembled]; [with sub-girt framing assembly]; with integral [glass fiber batt] [rigid board] [foamed-in-place] insulation.

DESIGN AND PERFORMANCE REQUIREMENTS

Design and size components to withstand dead and live loads caused by positive and negative wind pressure acting normal to plane of wall [as calculated in accordance with [________] code] [to a design pressure of [____] lb/sq ft ([____] KPa)] [as measured in accordance with ANSI/ASTM E330].

Maximum Allowable Deflection of Panel: [1/90] [1/180] [____].

System to accommodate, without damage to system, components, or deterioration of seals, movement within system; movement between system and perimeter components, when subject to seasonal temperature cycling; dynamic loading and release of loads; deflection of structural support framing [, shortening of building concrete structural columns] [, creep of concrete structural members] [and a mid-span slab edge deflection of [____] inch ([____] mm)].

Accommodate positive drainage for moisture entering, or condensation occurring within panel system, to exterior.

System to accommodate tolerances of building structural framing.

Thermal Resistance of System: R of [____] (RSI of [____]).

Products of this section shall provide continuity of thermal barrier at building enclosure elements [in conjunction with thermal insulating materials in Section [________]].

Products of this section shall provide continuity of vapor and air barrier at building enclosure elements [in conjunction with vapor and air barrier materials in Section [07190] [and] [________]].

Sound Attenuation Through Wall System (Exterior to Interior): STC [38] [____], measured in accordance with [ASTM E413.] [________.]

SUBMITTALS

Submit under provisions of Section [01300.] [________.]

Shop Drawings: Indicate dimensions, panel layout, spans, joints, construction details, methods of anchorage, method [and sequence] of installation, [and] [________________].

Product Data: Provide data on assembled panel structural capabilities.

Samples:	Submit [two] [_______] samples of [panel] [panel finish], [____x____] inch ([____x____] mm) in size illustrating finish color, sheen and texture.

[Design Data: Indicate panel profile characteristics and dimensions, structural properties, and [________].]

Manufacturer's Installation Instructions: Indicate special handling criteria, installation sequence, cleaning procedures and [________].

QUALITY ASSURANCE

Perform Work in accordance with [AA.] [AISI.] [________.]

Maintain [one copy] [[____] copies] of [each] document on site.

QUALIFICATIONS

Manufacturer: Company specializing in manufacturing the products specified in this section with minimum [three] [_______] years [documented] experience.

Installer: Company specializing in performing the Work of this section [with minimum [__________] years [documented] experience] [and] [approved by manufacturer].

MOCKUP

Provide mockup of wall [and soffit] panel system under provisions of Section [01400.] [________.]

Assembly to illustrate component assembly including panel [and glazing] materials, weep drainage system, attachments, anchors and perimeter sealant.

Mockup may [not] remain as part of the Work.

PRE-INSTALLATION CONFERENCE

Convene [one] [_____] week prior to commencing Work of this section, under provisions of Section [01039.] [________.]

DELIVERY, STORAGE, AND HANDLING

Deliver, store, protect and handle products under provisions of Section [01600.] [________.]

Protect panels from accelerated weathering by removing or venting sheet plastic shipping wrap.

Stack pre-finished material to prevent twisting, bending, or abrasion, and to provide ventilation. Slope metal sheets to ensure drainage.

Prevent contact with materials which may cause discoloration or staining.

FIELD MEASUREMENTS

Verify that field measurements are as indicated on [shop drawings] [Drawings].

****** [OR] ******

Verify that field measurements are as instructed by the manufacturer.

COORDINATION

Coordinate Work under provisions of Section [01039.] [________.]

Coordinate the Work with placement of anchors and [________].

Coordinate the Work of Section [07190] [________] for installation of vapor and air barrier seals.

Coordinate the Work with installation of [firestopping] [________], installing [windows] [louvers] [and] [________________] components or materials.

WARRANTY

Provide [ten] [____] year warranty under provisions of Section [01700.] [________.] Include coverage for degradation of panel finish including color fading caused by exposure to weather.

Provide [three] [____] year warranty under provisions of Section [01700.] [________.] Include coverage for [water tightness,] [integrity of seals,] [and] [________].

PART 2 PRODUCTS

MANUFACTURERS

[__________________________________] Product [_________].

[__________________________________] Product [_________].

[__________________________________] Product [_________].

Substitutions: Under provisions of Section [01600.] [________.]

EXTERIOR PANEL SHEET MATERIALS

Pre-Coated Galvanized Steel:	ANSI/ASTM A446, Grade [C] [D] [____], [G90] [____] zinc coating; shop pre-coated with [silicone polyester] [fluorocarbon] [polyvinyl fluoride (PVF)] [________] coating.

****** [OR] ******

Pre-Coated Aluminum-Zinc Alloy Coated Steel:	ASTM A792, [Commercial] [Structural] [________] Quality, [AZ150] [AZ180] [AZ210] aluminum-zinc alloy coating; shop pre-coated with [silicone polyester] [fluorocarbon] [polyvinyl fluoride (PVF)] [________] coating.

****** [OR] ******

Pre-coated Aluminum:	ASTM B209, [3105] [____] alloy, [H174] [____] temper; [mill] [plain] [stucco embossed]; [[shop pre-coated with [modified silicone] [________] coating] [anodized to [0.0008] [________] inch ([0.02] [____] mm) thick].

****** [OR] ******

Stainless Steel:	ANSI/ASTM A167 Type [304] [316] [____] stainless steel, with [stucco embossed] [________] surface finish.

OTHER SHEET MATERIALS

Galvanized Steel: ASTM A446, Grade [C] [D] [____], [G90] [____] zinc coating.

****** [OR] ******

Aluminum-Zinc Alloy Coated Steel: ASTM A792, [Commercial] [Structural] [________] Quality, [AZ150] [AZ180] [AZ210] aluminum-zinc alloy coating.

****** [OR] ******

Aluminum: ASTM B209, [3105] [____] alloy, [H174] [____] temper; [mill] [plain] [________].

****** [OR] ******

Stainless Steel:	ANSI/ASTM A167 type [316] [____] stainless steel, with [stucco embossed] [________] surface finish.

ACCESSORIES

Insulation: [Glass fiber type specified in Section 07213;] [[Polyurethane] [Polystyrene] type specified in Section 07212;] [Foamed-in-place [urethane] [polyisocyanurate] type specified in Section 07214] [[____] inch ([____] mm) thick] [thermal resistance R of [____] (RSI of [____])].

****** [OR] ******

Insulation: [ASTM C665 Type [I] [II] [III] Class [A] [B] [C],] glass fiber blanket; [[____] inch ([____] mm) thick] [thermal resistance R of [____] (RSI of [____])].

****** [OR] ******

Insulation: [Polyurethane] [Polystyrene] [________]; [flame/smoke classification of [____/____] in accordance with ASTM E84;] [____] inch ([____] mm) thick.

****** [OR] ******

Insulation: Foamed-in-place [urethane] [polyisocyanurate] [________] type; [____] inch ([____] mm) thick:

Thermal Conductivity: ANSI/ASTM C177:

[____] K value at 32 degrees F ([____] ksi value at 0 degrees C).

[____] K value at 75 degrees F ([____] ksi value at 24 degrees C).

Water Vapor Transmission: ASTM E96; [____] perms ([____] perms).

Water Vapor Absorption: ASTM D2482; [____] percent by volume at 24 hours/25 degrees C/100 percent RH.

Compressive Strength: ANSI/ASTM D1621; [____] psi ([____] KPa).

Density:	ANSI/ASTM D1622; [____] lb/cu ft ([____] kg/cu m).

Surface Burning Characteristics:	[____/____]; in accordance with ASTM E84.

Gaskets:	Manufacturer's standard type suitable for use with panel system, permanently resilient; [ultraviolet and ozone resistant;] [________] color [as selected].

Sealants: [Specified in Section 07900] [Manufacturer's standard type suitable for use with installation of panel system; [non-staining,] [[skinning] [non-skinning],] [non-shrinking] [and] [non-sagging]; [ultra-violet and ozone resistant];] [________] color [as selected].

Fasteners: Manufacturer's standard type to suit application; [with soft neoprene washers,] [steel, hot dip galvanized in accordance with ANSI/ASTM A153] [stainless steel]; fastener cap same color as exterior panel.

Power Actuated Fasteners: Steel, galvanized [in accordance with ANSI/ASTM A153]; [with soft neoprene washers,] fastener cap same color as exterior panel.

Field Touch-up Paint: As recommended by panel manufacturer.

Bituminous Paint: [Asphalt base] [________________].

COMPONENTS

Exterior Sheet: Minimum [[22] [20] [18] [____] gage ([0.8] [0.9] [1.2] [____] mm) thick pre-coated steel stock] [[0.032] [0.040] [0.050] [____] inch ([0.8] [1] [1.27] [____] mm) thick pre-coated aluminum stock]; [________] profile [as indicated]; [____] inches ([____] mm) wide panel; [interlocking] [lapped] [________] edges, [fitted with continuous gaskets.] [filled with sealant.]

Liner: Minimum [[22] [20] [18] [____] gage ([0.8] [0.9] [1.2] [____] mm) thick steel stock] [[0.032] [0.040] [0.050] [____] inch ([0.8] [1] [1.27] [____] mm) thick aluminum stock]; [________] profile in [____] inch ([____] mm) wide panels; [interlocking] [lapped] [________] edges, [fitted with continuous gaskets.] [filled with sealant.]

Soffit Panels: [[____] gage ([____] mm) thick pre-coated steel,] [[____] inch ([____] mm) thick pre-coated aluminum alloy,] [________] profile in [____] inch ([____] mm) wide panels; lapped edges [fitted with continuous gaskets.] [filled with sealant.]

Sub Girts: [[____] gage ([____] mm) thick steel,] [[____] inch ([____] mm) thick aluminum alloy,] [________] profile [as indicated]; to attach panel system to [building] structural frame] [________].

Internal and External Corners: Same material, thickness and finish as exterior sheets; [________] profile to suit system; [shop cut and factory mitered] [brake formed] to required angles. [Mitered internal corners to be back braced with [[____] gage] [[____] inch] ([____] mm) thick pre-coated sheet stock, to maintain continuity of profile.]

Expansion Joints: Same material, thickness and finish as exterior sheets; [[____] gage] [[____] inch] ([____] mm) thick; [manufacturer's standard brake formed] [infill] [________] type, of profile [to suit system] [as detailed]. [Exposed fasteners same finish as panel system.]

Trim, Closure Pieces, Caps, Flashings, [Facias] [Infills], [and] [________]: Same material, thickness and finish as exterior sheets; brake formed to required profiles.

Anchors: [Galvanized steel] [Aluminum] [Stainless steel].

Operable Sash: [Specified in Section [08520] [________]] [________________].

Firestopping: [Specified in Section [07270] [________]] [________________].

Air and Vapor Barrier: [Specified in Section [07190] [________]] [________________].

FABRICATION

Fabrication of [primary] component profiles on site not permitted.

Form sections true to shape, accurate in size, square, and free from distortion or defects.

Form pieces in longest practical lengths.

Form panels for [standing] [batten] [________] seams.

****** [OR] ******

Panel Profile:	[________].

Fabricate corners in one continuous piece with minimum [18] [____] inch ([450] [____] mm) returns and seal.

FINISH

Exposed Exterior Surfaces: [________] color [as selected] [from manufacturer's standard range].

Exposed Interior Surfaces: [________] color [as selected] [from manufacturer's standard range].

PART 3 EXECUTION

EXAMINATION

Verify substrate framing under provisions of Section [01039.] [________.]

Verify that [building] framing members are ready to receive panel system.

INSTALLATION

Install composite metal building panel system on walls [and soffits] in accordance with manufacturer's instructions.

Protect panel surfaces in contact with [cementitious materials] [and] [dissimilar metals] with bituminous paint. Allow to dry prior to installation.

Permanently fasten panel system to structural supports; aligned, level, and plumb, within specified tolerances.

Locate panel joints over supports. [End lap panels minimum [2] [____] inches ([50] [____] mm).]

Provide [expansion] [control] joints where indicated.

Use concealed fasteners unless otherwise approved by Architect/Engineer.

Seal and place gaskets to prevent weather penetration. Maintain neat appearance.

TOLERANCES

Maximum Offset From True Alignment Between Adjacent Members Butting or In Line: [1/16] [____] inch ([1.6] [____] mm).

Maximum Variation from Plane or Location Indicated on

Drawings: [1/4] [1/8] [____] inch ([3] [6] [____] mm).

CLEANING

Clean work under provisions of [01700] [________].

Remove site cuttings from finish surfaces.

Clean and wash pre-finished surfaces with mild soap and water, rinse with clean water.

SCHEDULES

West (Main) Elevations: Fluted profile, Dark Brown color, 24 inch wide panels.

North, East and South Elevations: Flat "V" rib profile, Red color, 18 inch wide panels.

END OF SECTION