Lightweight Concrete Deck Topping

Lightweight aggregate concrete topping.

Lightweight concrete deck topping.

Lightweight concrete can also be applied as a topping slab over structural concrete decks. Elastizell roof decks are cast over galvanized steel decking corrugated or fluted precast or cast in place concrete and wood. The lightweight aggregates used are usually expanded shale clay or slate materials that have been fired in a rotary kiln to give them a porous structure similar to volcanic rock. While there is often a higher unit cost for lightweight concrete there is significant structural steel tonnage and cost savings with using lightweight concrete slabs on metal deck.

The light weight concrete density is less because lightweight coarse aggregates and sometimes lightweight fine aggregates are used which make the concrete weigh less. From elevated walkways to balconies and terraces we can cover all exterior areas of wood framed construction. Formally west coast light weight concrete aus has specialized in concrete toppings for 35 years. For commercial buildings is steel.

Easy to make and almost self leveling this material ha. If one uses a lightweight concrete weighing 90 pounds per cubic foot a 1 1 2 inch thickness of this concrete weighs about 11 pounds. A structurally sound plywood roof deck about 15 feet wide and 60 feet long dead flat forms a walking plane and terrace for housing units above. Compared with a normal weight slab lightweight slabs may also save inches of structural framing depth per story which can result in a substantial savings in steel foundations and cladding costs for multistory.

Lightweight concrete can also be applied as a topping slab over structural concrete decks. Lightweight concrete made with expanded shale clay or slate aggregate produced by the rotary kiln method has also been used very successfully in an operation of this kind. Other deck toppings are available such as poured gypsum and lightweight concrete with integral insulation but these are considered substrate covers and not roof decks. Lightweight insulation concrete topping.

Our topping slabs can also be found on podium courtyards as well as inside planter boxes. The most prevalent roof deck in the u s. Elastizell concrete is produced by mixing elastizell expansion material into a properly designed cementitious mixture. Lightweight floor toppings can be made using water sand cement and a foam made of fine air bubbles.

The shape of profiled steel decking may vary as shown in fig 3 and fig 4.