Poured Gypsum Roof Deck Weight

These include office complexes schools public buildings shopping malls and warehouses located throughout the united states.

Poured gypsum roof deck weight.

Its use increased since it provided roof deck fire protection diaphragm values and an economical substrate for roofing. Place plank on lower flanges of sub purlins or other framing with ends and edges supported. It is usually poured to a 2 inch thickness and weighs approximately 17 5 lbs. 2 2 gypsum concrete roof decking figure 2 2 2 1 gypsum concrete is mill formulated and composed of calcined gypsum and wood chips or shavings.

Gypsum deck plank for roof decks. Gypsum poured over formboards has been used as a substrate for roofing materials since the 1940 s. Many of these installations continue to perform and provide support to. Gypsum decks incorporated the placement of bulb tees.

The density of dried gypsum concrete varies from 30 to 55 pounds per cubic foot depending upon the design mix and the type of aggregate. For fire rated roof decks weld per fire test assembly. Gypsum roof decking is then allowed to set and covered with a water tight roofing material. Tectum 1 thick 2 0psf insulrock 1 thick 2 7psf poured gypsum 1 thick 6 5psf vermiculate concrete 1 thick 2 6psf.

Free water will cause the gypsum concrete to decompose and lose structural strength. Poured gypsum decks provide stable structural properties if kept moisture free. Use minimum 13 mm 1 2 inch fillet welds on alternate sides of sub purlins both sides at end joints to main purlins. A gypsum concrete roof deck consists of gypsum concrete that is mixed with either wood fibers or mineral aggregate.