Poured gypsum decks provide stable structural properties if kept moisture free.
Structural gypsum roof deck.
Use minimum 13 mm 1 2 inch fillet welds on alternate sides of sub purlins both sides at end joints to main purlins.
In retrofitting a gypsum roof deck one should evaluate the steel bracing of the roof structure to ascertain if the roof deck was in fact used as a structural diaphragm.
The truss tees allowed the gypsum concrete to flow through the structural support thus increase shear resistance.
See how cci s framing crew made use of usg support services during the installation of this mid rise roof deck.
Damage that can cause loss of the structural composite strength is most likely to come from.
Roofing building envelope.
The fiberglass mat faced noncombustible as described and tested in accordance with astm e136 nonstructural gypsum core panels provide superior fire resistance and protection from hail damage and hold up well under normal construction and maintenance foot traffic while stiffening and stabilizing roof decks.
Formboards placed between the bulb tees contain the fast.
Introduced as a roof deck substrate in the 1940 s.
Bulb tees also make excellent bond beam for anchoring structural members providing a continuous strip for attachment and reinforcement.
Cci took up the installation of usg structural panel concrete roof deck they both simplified and sped up their work flow vs.
If the deck is sound it may be possible to treat the deck much like concrete by priming the surface adhering thermal insulation and installing a new roof membrane.
The gypsum roof deck system is supported by bulb tees generally spaced from 24 to 32 on center.
Architects project managers and builders can rest easy knowing that their visions will be covered by the best building envelope materials.
For fire rated roof decks weld per fire test assembly.
Gypsum concrete roof deck systems consist of a form board wire reinforcement and a poured application of gypsum concrete.
When corporate contractors inc.
Bulb tees are high strength lightweight steel sections used as structural subpurlins in specialty roof decks such as tectum wood plank poured gypsum decks and span rock gypsum plank decks.
This system provides fire resistance seismic and wind load diaphragm values in addition to an economical roofing membrane substrate.
Roofing was added by nailing a base sheet to the gypsum deck and then bonding roofing materials to the base sheet.
Gypsum deck plank for roof decks.
Truss tees were used to increase horizontal shear forces for building construction.
Usg s roofing and building envelope solutions are the best choice for commercial building envelope including an air and water barrier system roof boards and sheathing.
