Precast Gypsum Plank Roof Deck

Gypsum roof decking is one of many materials used to cover open web steel bar joists.

Precast gypsum plank roof deck.

Precast modular concrete blocks make up this rather unique system. Collaboration with the structural engineer. Aside from roof decks this arrangement can also be deployed as a floor system. Metal edge tounge groove plank is a lightweight 12 psf precast concrete plank produced in a standard 1 6 x10 x2 size with a cold rolled 22 ga.

Weights vary with the dimensions of the plank. Each plank weighs approximately 135 lbs. Gypsum planks are normally 2 thick 2 wide and 8 long and are factory laminated of two gypsum panels. 50 mm 2 inches thick by 600 mm 24 inches wide by main purlin span.

Factory laminate from two 25 mm 1 inch thick gypsum panels with top panel edge set back along sub purlin edge not more than 13 mm 1 2 inch. Because a roof deck is the foundation for the roof system the designer needs to coordinate the roof system design requirements for the roof deck with the structural engineer to ensure the performance of the roof system. Gypsum planks also come in other sizes. There is a hung ceiling below which may be part of the assembly.

Where possible length should span two main purlin spans. For extreme environmental conditions stainless steel edging is available. Lightweight precast concrete planks. The planks are not poured on site but precast.

A modern iteration of this arrangement is the quad deck system marketed by quad lock. Gypsum concrete roof deck systems have been installed since the early 1950 s in all types of commercial markets. 2 metal edge tongue groove plank. The roof deck consists of a flat deck of 3 solid gypsum planks 1 wide and 3 long supported by doubled light gage channels in turn supported by structural steel framing.

Gypsum roof decking 2 1 gypsum plank roof decking figure 1 2 1 1 gypsum planks are normally 2 inches thick 2 feet wide and 8 feet long and are factory laminated of two gypsum panels. Fabricated of gypsum board. These include office complexes schools public buildings shopping malls and warehouses located throughout the united states. Decking that will be discussed is called gypsum roof decking.

The building may date from the late 1930 s.