Poured Gypsum Roof Deck Weight

Free water will cause the gypsum concrete to decompose and lose structural strength.

Poured gypsum roof deck weight.

A gypsum concrete roof deck consists of gypsum concrete that is mixed with either wood fibers or mineral aggregate. 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. Gypsum decks incorporated the placement of bulb tees. Gypsum concrete roof deck systems have been installed since the early 1950 s in all types of commercial markets.

Its use increased since it provided roof deck fire protection diaphragm values and an economical substrate for roofing. For fire rated roof decks weld per fire test assembly. Place plank on lower flanges of sub purlins or other framing with ends and edges supported. Gypsum poured over formboards has been used as a substrate for roofing materials since the 1940 s.

Gypsum deck plank for roof decks. Tectum 1 thick 2 0psf insulrock 1 thick 2 7psf poured gypsum 1 thick 6 5psf vermiculate concrete 1 thick 2 6psf. Use minimum 13 mm 1 2 inch fillet welds on alternate sides of sub purlins both sides at end joints to main purlins. Gypsum concrete roof deck system.

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 decks provide stable structural properties if kept moisture free. 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.