Concrete Roof Slab Details

The slabs having ratio of longer length to its shorter length l y l x greater than 2 is called one way slab otherwise as two way slab.

Concrete roof slab details. For example the florida based company hurricane proof systems offers a 7 inch 18 centimeter slab of concrete in three layers. In two way slab main reinforcement is provided along both direction. If properly constructed the footings are seismic resistant and have been known to last for centuries. One concern is that the concrete must develop the compressive strength intended by the structural engineer in the design of the roof deck.

In one way slab main reinforcement is parallel to shorter direction and the reinforcement parallel to longer direction is called distribution steel. Learn more and see projects with hollowcore slabs. Concrete slabs can take many forms including prestressed precast and cast in place construction. A solid slab of concrete capping the top of your house.

According to the 1995 aci code all two way reinforced concrete slab systems including edge supported slabs flat slabs and flat plates are to be analyzed and designed according to one unified method such as direct design method and equivalent frame method. Exact specifications vary but most concrete roofs are several inches thick. Reinforced concrete for frames and roof slabs both cast in place and precast panels but only if connected to walls local stone masonry is very strong in transferring loads to footings. Constructing a concrete slab for a structural roof is different from that for building a slab on the ground in that attention must concern two important objectives.

The blocks come in several sizes but this guide will assume you are using a 16 3 4 inch wide concrete slab. Step 3 placing the steel joists. One of the most crucial step in building a flat concrete roof is to figure out the size of the concrete block you will need. Spancrete hollowcore precast concrete planks slabs are fire resistant reduce weight and costs.

The steel joists will provide a strong foundation for the flat concrete roofing. This kind of slab is majorly used at the entrance of hotels malls restaurants for good pictorial view and to install artificial lighting.