Precast Gypsum Plank Roof Deck

2 metal edge tongue groove plank.

Precast gypsum plank roof deck.

It is one of the various types of insulated concrete forms icfs. Weights vary with the dimensions of the plank. These include office complexes schools public buildings shopping malls and warehouses located throughout the united states. The building may date from the late 1930 s.

Where possible length should span two main purlin spans. Gypsum planks are normally 2 thick 2 wide and 8 long and are factory laminated of two gypsum panels. Collaboration with the structural engineer. Decking that will be discussed is called gypsum roof decking.

Each plank weighs approximately 135 lbs. Gypsum planks also come in other sizes. 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. Precast modular concrete blocks make up this rather unique 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. Gypsum roof decking is one of many materials used to cover open web steel bar joists. Lightweight precast concrete planks. Structural panel concrete roof deck is versatile and economic option for both low and steep slope roofs.

There is a hung ceiling below which may be part of the assembly. 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. For extreme environmental conditions stainless steel edging is available. A modern iteration of this arrangement is the quad deck system marketed by quad lock.

Unlike traditional roofing systems where multiple layers are required concrete roof deck is both the noncombustible structural sheathing and either the nail base or thermal barrier. 50 mm 2 inches thick by 600 mm 24 inches wide by main purlin span. The planks are not poured on site but precast. 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.