UFGS_08_91_00_Metal_Wall_Louvers_-_UFGS_08_91_00.pdf

SECTION 08 91 00 Page 1

SECTION 08 91 00

METAL WALL LOUVERS

05/ 11

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.

AIR MOVEMENT AND CONTROL ASSOCIATION INTERNATIONAL (AMCA)

AMCA 500-D (2012) Laboratory Methods of Testing

Dampers for Rating

AMCA 511 (2010) Certified Ratings Program for Air Control Devices

ALUMINUM ASSOCIATION (AA)

AA DAF45 (2003; Reaffirmed 2009) Designation System for Aluminum Finishes

AAMA

AMERICAN ARCHITECTURAL

MANUFACTURERS ASSOCIATION (AAMA)

(2015) Voluntary Specification, Performance Requirements and Test Procedures for Pigmented Organic Coatings on Aluminum Extrusions and Panels

AAMA 2604 (2013) Voluntary Specification, Performance Requirements and Test Procedures for High Performance Organic Coatings on Aluminum Extrusions and Panels

AAMA 2605 (2013) Voluntary Specification, Performance Requirements and Test Procedures for Superior Performing Organic

Coatings on Aluminum Extrusions and Panels

AAMA 611 (2014) Voluntary Specification for Anodized Architectural Aluminum

ASTM INTERNATIONAL (ASTM)

ASTM Al008/A1008M (2016) 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 Hardened

ASTM A653/A653M (2015; E 2016) Standard Specification for Steel Sheet, Zinc-Coated

SECTION 08 91 00 Page 2

(Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process

ASTM B209 (2014) Standard Specification for

Aluminum and Aluminum-Alloy Sheet and Plate

ASTM B209M (2014) Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate (Metric)

ASTM B221 (2014) Standard Specification for

Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes

ASTM B221M (2013) Standard Specification for

Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes (Metric)

1.2 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are 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 SUBM ITTAL PROCEDURES:

SD-02 Shop Drawings

Wall louvers

SD-03 Product Data

Metal Wall Louvers

SD-04 Samples

Wall louvers; G

1.3 DELIVERY, STORAGE, AND PROTECTION

Deliver materials to the site in an undamaged condition. Carefully store materials off the ground to provide proper ventilation, drainage, and protection against dampness. Louvers shall be free from nicks, scratches, and blemishes. Replace defective or damaged materials with new.

1.4 DETAIL DRAWINGS

Show all information necessary for fabrication and installation of wall louvers. Indicate materials, sizes, thicknesses, fastenings, and profiles.

1.5 COLOR SAMPLES

Colors of finishes for wall louvers and door louvers shall closely match the colors of the walls installed in.

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PART 2 PRODUCTS

2 .1 MATERIALS

2 .1.1 Galvanized Steel Sheet

ASTM A653/A653M , coating designation Z275 G90.

2 .1.2 Aluminum Sheet

ASTM B209M ASTM B209, alloy 3003 or 5005 with temper as required for forming.

2 .1.3 Omitted

2. 1.4 Stainless Steel

Type 302 or 304, with 2B finish.

2. 1.5 Cold Rolled Steel Sheet

ASTM A1008/A1008M, Class 1, with matte finish. Use for interior louvers only.

2 .2 METAL WALL LOUVERS

Weather resistant type, with bird screens and made to withstand a wind load of not less than 30 pounds per square foot. Wall louvers shall bear the AMCA certified ratings program seal for air performance and water penetration in accordance with AMCA 500-D and AMCA 511. The rating shall show a water penetration of 0.06 kilograms or less per square meter 0.20 or less ounce per square foot of free area at a free velocity of 244 meters 800 feet per minute.

2 .2.1 Omitted

2 .2.2 Formed Metal Louvers

Formed of zinc-coated cold rolled or stainless steel sheet not thinner than 16 U .S. gage.

2 .2.3 Mullions and Mullion Covers

Same material and finish as louvers. Provide mullions for all louvers more than 1500 mm 5 feet in width at not more than 1500 mm 5 feet on centers. Provide mullions covers on both faces of joints between louvers.

2 .2.4 Screens and Frames

For steel louvers, provide 1/2 inch square mesh, 2.5 or 1.5 mm 12 or 16 gage zinc-coated steel; 12.5 mm 1/2 inch square mesh, 1.5 mm 16 gage copper; or 6 mm 1/4 inch square mesh, 1.5 mm thick 16 gage zinc-coated steel or copper bird screening. Mount screens in removable, re-wirable frames of same material and finish as the louvers.

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2 .3 OMITTED

2 .4 FASTENERS AND ACCESSORIES

Provide stainless steel screws and fasteners for zinc-coated or stainless steel screws and fasteners for steel louvers.

Provide other accessories as required for complete and proper installation.

2 .5 FINISHES

2 .5.1 Omitted

2 .5.2 Steel

Provide factory-applied coating. Clean and phosphate treat exposed surfaces and apply rust-inhibitive primer and baked enamel finish coat,

0.025 mm one mil minimum total dry film thickness, color to match wall colors.

PART 3 EXECUTION

3.1 INSTALLATION

3.1.l Wall Louvers

Install using stops or moldings, flanges, strap anchors, or jamb fasteners as appropriate for the wall construction and in accordance with manufacturer's recommendations.

3 .l. 2 Omitted

3 .l. 3 Screens and Frames

Attach frames to louvers with screws or bolts.

3.2 PROTECTION FROM CONTACT OF DISSIM ILAR MATERIALS

3.2.l Copper or Copper-Bearing Alloys

Paint copper or copper-bearing alloys in contact with dissimilar metal with heavy-bodied bituminous paint or separate with inert membrane.

3.2.2 Omitted

3.2.3 Metal

Paint metal in contact with mortar, concrete, or other masonry materials with alkali-resistant coatings such as heavy-bodied bituminous paint.