Lightweight Concrete Deck Topping

Elastizell roof decks are cast over galvanized steel decking corrugated or fluted precast or cast in place concrete and wood.

Lightweight concrete deck topping.

The shape of profiled steel decking may vary as shown in fig 3 and fig 4. 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. 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. Lightweight concrete can also be applied as a topping slab over structural concrete decks.

Composite lightweight concrete floor system. Lightweight aggregate concrete 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. 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.

Lightweight floor toppings can be made using water sand cement and a foam made of fine air bubbles. Lightweight concrete can also be applied as a topping slab over structural concrete decks. 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. From elevated walkways to balconies and terraces we can cover all exterior areas of wood framed construction.

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. For commercial buildings is steel. 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. The light weight concrete density is less because lightweight coarse aggregates and sometimes lightweight fine aggregates are used which make the concrete weigh less.

The most prevalent roof deck in the u s. Easy to make and almost self leveling this material ha. Lightweight insulation concrete topping. Elastizell concrete is produced by mixing elastizell expansion material into a properly designed cementitious mixture.

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.