Poured Gypsum Roof Deck Weight

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.

Poured gypsum roof deck weight.

Free water will cause the gypsum concrete to decompose and lose structural strength. Gypsum roof decking is then allowed to set and covered with a water tight roofing material. Gypsum concrete roof deck systems have been installed since the early 1950 s in all types of commercial markets. A gypsum concrete roof deck consists of gypsum concrete that is mixed with either wood fibers or mineral aggregate.

It is usually poured to a 2 inch thickness and weighs approximately 17 5 lbs. Gypsum concrete roof deck system. For fire rated roof decks weld per fire test assembly. Gypsum decks incorporated the placement of bulb tees.

Gypsum poured over formboards has been used as a substrate for roofing materials since the 1940 s. 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. Tectum 1 thick 2 0psf insulrock 1 thick 2 7psf poured gypsum 1 thick 6 5psf vermiculate concrete 1 thick 2 6psf. Damage that can cause loss of the structural composite strength is most likely to come from leakage of water into the roof deck from unattended roof leaks.

Many of these installations continue to perform and provide support to. Its use increased since it provided roof deck fire protection diaphragm values and an economical substrate for roofing. Use minimum 13 mm 1 2 inch fillet welds on alternate sides of sub purlins both sides at end joints to main purlins. Gypsum deck plank for roof decks.