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.

Gypsum decks incorporated the placement of bulb tees. Gypsum roof decking is then allowed to set and covered with a water tight roofing material. Place plank on lower flanges of sub purlins or other framing with ends and edges supported. A gypsum concrete roof deck consists of gypsum concrete that is mixed with either wood fibers or mineral aggregate.

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. Many of these installations continue to perform and provide support to. For fire rated roof decks weld per fire test assembly. Use minimum 13 mm 1 2 inch fillet welds on alternate sides of sub purlins both sides at end joints to main purlins.

Gypsum poured over formboards has been used as a substrate for roofing materials since the 1940 s. Gypsum concrete roof deck system. Free water will cause the gypsum concrete to decompose and lose structural strength. 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.

Tectum 1 thick 2 0psf insulrock 1 thick 2 7psf poured gypsum 1 thick 6 5psf vermiculate concrete 1 thick 2 6psf. Its use increased since it provided roof deck fire protection diaphragm values and an economical substrate for roofing. It is usually poured to a 2 inch thickness and weighs approximately 17 5 lbs. Gypsum concrete roof deck systems have been installed since the early 1950 s in all types of commercial markets.