Suspended Concrete Floor Slab Detail

This construction is similar to the timber floor above but uses either pre cast concrete planks or small pre cast concrete beams with concrete blocks laid between the beams.

Suspended concrete floor slab detail. Steel reinforced slabs typically between 100 and 500 mm thick are most often used to construct floors and ceilings while thinner mud slabs may be used for exterior paving see below in many domestic and industrial buildings a thick concrete slab supported on. The mesh reinforcement in the slab is placed in the top with 1 covers. Ground bearing concrete floor slabs should be at least 100mm thick including monolithic screed where appropriate. The suspended reinforced concrete slab is tied into the external capping beam at floor level.

This slab design can only work for a slab clear span of 14 feet which is only good for one car garage 2 cars if parked behind the other not side by side. Renovations can often incorporate concrete slabs even when the original building does not. A concrete slab is a common structural element of modern buildings consisting of a flat horizontal surface made of cast concrete. Alternative floor slab detail.

Detail 21 shows a suspended slab with no beam. When renovating rooms with timber floors it is often possible to replace the timber with a concrete slab for added thermal mass and quietness underfoot. Suspended floors are also used when the water table is high or when aggressive chemicals are present in the soil that may attack the concrete slab. The ground floor is made up of suspended concrete slab or beam and block floor supported by the external and internal load bearing walls which transfer the loads to the foundations below.

They are normally pre fabricated offsite and transported by truck. This results in a cost savings in concrete of 25 50. Using a composite steel and concrete design the floor slab can be thinner than conventional residential suspended slab systems. Added rooms can use slab on ground or suspended slabs.

Ventilation is required in the same way as a suspended timber floor. Some slabs have hollow channels running through them these hollow core slabs are used to help reduce weight and also to allow cabling and piping to be run through the slab. They can normally span greater distances than timber joists. The slab is constructed on well compacted granular fill crushed stone or marl.

Suspended slabs are made of concrete and steel mesh the same as a ground slab. The top steel reinforcement is important. Ground bearing floors shall be of adequate strength and durability and use concrete mixed and reinforced as necessary to support floor loads safely and resist chemical and frost action. Floortech flooring procedures offers an innovative as well as superior alternative to traditional suspended concrete foundations.