Lightweight Structural Concrete Roof Deck

They are often however part of a building design when future above roof level floors are contemplated.

Lightweight structural concrete roof deck.

Roof assembly installation can occur immediately following the installation of our roof deck panels. Structural concrete composite decks are somewhat uncommon at the roof level. Structural concrete deck a cast in place concrete deck serves as an integral part of the structure and is designed to carry heavy loads normal weight concrete is typically used for cast in place construction. Product evaluation code report 14076.

As a result lightweight structural concrete inherently con tains much more water than normal weight structural concrete. 1 2011 structural lightweight concrete roof decks suggests its contractors pro vide the designer of record and gener al contractor with a copy of the mrca bulletin that discusses issues on mois ture in concrete along with having them review the american concrete institute aci document aci 214r 03 guide for. The normal weight concrete employs standard aggregates i e. Structural concrete composite deck a supported steel panel deck system filled with normal weight or structural lightweight concrete.

Structural panels concrete roof deck is an innovative technology designed to provide a structural roof sheathing without the need for thermal barriers pouring setting or curing which resolves the latent moisture issue commonly found in roofing with poured concrete. With structural lightweight concrete a mix of shale slate slag and clay are used and with this mix the aggregate is fully saturated prior to mixing. Beneath the roof cover structural concrete roof decks are commonly topside insulated using adhered insulation panels or cast in place lightweight insulating concrete. Composite roof decks where a metal form deck remains in place.

The steel deck panels are embossed in a manner which when filled with concrete allows the elements of the construction to respond to load as a single unit. However when a lightweight structural concrete lwsc roof deck is poured in place it uses significantly more water. Lightweight structural concrete is used in roofing related appli cations for cast in place concrete roof decks using removable forms. Hard rocks with a low water absorption rate and weighs approximately 2403 kg m 3 150 lb cf.

The end result of the structural lightweight mix is a deck that can be 20 25 lighter than standard structural concrete.