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// CODE SNIPPET

[BS] 1404.12 Glass Veneer

Building Code 2018 of Illinois > 14 Exterior Walls > 1404 Installation of Wall Coverings > 1404.12 Glass Veneer
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The area of a single section of thin exterior structural glass veneer shall not exceed 10 square feet (0.93 m2) where that section is not more than 15 feet (4572 mm) above the level of the sidewalk or grade level directly below, and shall not exceed 6 square feet (0.56 m2) where it is more than 15 feet (4572 mm) above that level.

[BS] 1404.12.1 Length and Height

The length or height of any section of thin exterior structural glass veneer shall not exceed 48 inches (1219 mm).

[BS] 1404.12.2 Thickness

The thickness of thin exterior structural glass veneer shall be not less than 0.344 inch (8.7 mm).

[BS] 1404.12.3 Application

Thin exterior structural glass veneer shall be set only after backing is thoroughly dry and after application of an approved bond coat uniformly over the entire surface of the backing so as to effectively seal the surface. Glass shall be set in place with an approved mastic cement in sufficient quantity so that not less than 50 percent of the area of each glass unit is directly bonded to the backing by mastic not less than 1/4 inch (6.4 mm) thick and not more than 5/8 inch (15.9 mm) thick. The bond coat and mastic shall be evaluated for compatibility and shall bond firmly together.

[BS] 1404.12.4 Installation at Sidewalk Level

Where glass extends to a sidewalk surface, each section shall rest in an approved metal molding, and be set not less than 1/4 inch (6.4 mm) above the highest point of the sidewalk. The space between the molding and the sidewalk shall be thoroughly caulked and made water tight.

[BS] 1404.12.4.1 Installation Above Sidewalk Level

Where thin exterior structural glass veneer is installed above the level of the top of a bulkhead facing, or at a level more than 36 inches (914 mm) above the sidewalk level, the mastic cement binding shall be supplemented with approved nonferrous metal shelf angles located in the horizontal joints in every course. Such shelf angles shall be not less than 0.0478-inch (1.2 mm) thick and not less than 2 inches (51 mm) long and shall be spaced at approved intervals, with not less than two angles for each glass unit. Shelf angles shall be secured to the wall or backing with expansion bolts, toggle bolts or by other approved methods.

[BS] 1404.12.5 Joints

Unless otherwise specifically approved by the building official, abutting edges of thin exterior structural glass veneer shall be ground square. Mitered joints shall not be used except where specifically approved for wide angles. Joints shall be uniformly buttered with an approved jointing compound and horizontal joints shall be held to not less than 0.063 inch (1.6 mm) by an approved nonrigid substance or device. Where thin exterior structural glass veneer abuts nonresilient material at sides or top, expansion joints not less than 1/4 inch (6.4 mm) wide shall be provided.

[BS] 1404.12.6 Mechanical Fastenings

Thin exterior structural glass veneer installed above the level of the heads of show windows and veneer installed more than 12 feet (3658 mm) above sidewalk level shall, in addition to the mastic cement and shelf angles, be held in place by the use of fastenings at each vertical or horizontal edge, or at the four corners of each glass unit. Fastenings shall be secured to the wall or backing with expansion bolts, toggle bolts or by other methods. Fastenings shall be so designed as to hold the glass veneer in a vertical plane independent of the mastic cement. Shelf angles providing both support and fastenings shall be permitted.

[BS] 1404.12.7 Flashing

Exposed edges of thin exterior structural glass veneer shall be flashed with overlapping corrosion-resistant metal flashing and caulked with a waterproof compound in a manner to effectively prevent the entrance of moisture between the glass veneer and the backing.

Related Code Sections


1404.12 Exterior Walls, Glass Veneer
The area of a single section of thin exterior structural glass veneer shall not exceed 10 square feet (0.93 m 2 ) where that section is not more ...
Building Code 2021 of Illinois > 14 Exterior Walls > 1404 Installation of Wall Coverings > 1404.12 Glass Veneer
1404.12 Exterior Walls, Glass Veneer
The area of a single section of thin exterior structural glass veneer shall not exceed 10 square feet (0.93 m 2 ) where that section is not more than ...
Building Code 2018 of Illinois > 14 Exterior Walls > 1404 Installation of Wall Coverings > 1404.12 Glass Veneer
1404.12.3 Exterior Walls, Application
Thin exterior structural glass veneer shall be set only after backing is thoroughly dry and after application of an approved bond coat uniformly ...
Building Code 2018 of Illinois > 14 Exterior Walls > 1404 Installation of Wall Coverings > 1404.12 Glass Veneer > 1404.12.3 Application
1404.12.4 Exterior Walls, Installation at Sidewalk Level
Where thin exterior structural glass veneer is installed above ...
Building Code 2021 of Illinois > 14 Exterior Walls > 1404 Installation of Wall Coverings > 1404.12 Glass Veneer > 1404.12.4 Installation at Sidewalk Level
1404.12.4 Exterior Walls, Installation at Sidewalk Level
Where thin exterior structural glass veneer is installed above ...
Building Code 2018 of Illinois > 14 Exterior Walls > 1404 Installation of Wall Coverings > 1404.12 Glass Veneer > 1404.12.4 Installation at Sidewalk Level
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