Lightweight Concrete Deck Topping

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.

Lightweight concrete deck topping. The light weight concrete density is less because lightweight coarse aggregates and sometimes lightweight fine aggregates are used which make the concrete weigh less. Easy to make and almost self leveling this material ha. Composite lightweight concrete floor system. For commercial buildings is steel.

Formally west coast light weight concrete aus has specialized in concrete toppings for 35 years. 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. 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. From elevated walkways to balconies and terraces we can cover all exterior areas of wood framed construction.

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. Elastizell concrete is produced by mixing elastizell expansion material into a properly designed cementitious mixture. Lightweight concrete can also be applied as a topping slab over structural concrete decks. Lightweight concrete is typically applied as composite slabs over vented metal decks that meet the requirements of astm a653 and are of the proper type and gauge to withstand the structural live and dead loads for the facility.

Our topping slabs can also be found on podium courtyards as well as inside planter boxes. The wood deck is to be covered by a hot mopped fiberglass roofing system which in turn will be protected by a concrete topping sloped to drains which will also be a walking surface. The most prevalent roof deck in the u s. The shape of profiled steel decking may vary as shown in fig 3 and fig 4.

Lightweight insulation concrete topping. Lightweight aggregate concrete topping. Elastizell roof decks are cast over galvanized steel decking corrugated or fluted precast or cast in place concrete and wood. Lightweight floor toppings can be made using water sand cement and a foam made of fine air bubbles.

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.