A concrete slab is a flat, rectangular and reinforced concrete structure that can be sized in length and width but has a lower depth and is used in floor, roof, bridge decks, etc. construction. I strongly suggest you to visit concrete slab charlotte nc to learn more about this.
Design In order to develop the ratio of its strength and weight, there are many designs for a suspended slab. Only the bottom layer is modified in all situations where as the top surface is flat: corrugated, here the concrete is discharged in a steel ridged tray. It increases the strength of the slab, and stops the slab bending below its own weight.
Ribbed slab, significant additional strength on 1 side is given here.
Waffle slab, here is given extra strength in both directions.
One-way slab, the structural force in the shortest direction is given here.
Two-way slab, here the structural force in two directions is given.
The Concrete Slab Building The concrete slab could either be a prefabricated one or an in situ one. The slabs are constructed in factories in prefabricated slabs, and are transported to the site where they are lowered between steel or concrete beams. It may be pre-stressed at the plant, or post-stressed at the venue, or it may even come out unstressed. The main drawback of such a slab is that it might not fit if they’re not of the right dimensions. In the case of in situ construction, on the site of the building the concrete slab is constructed using a box into which the mixture of wet concrete is poured, called formwork.
If the slabs are to be strengthened, rebar’s are to be placed in the formwork before concrete mixture is poured in them. If concrete settles properly and to insure that the reinforcing has been entirely sealed, often rubber tipped metal or plastic bar chairs are used to hold the rebar away from both the base and the sides of the formwork. Formwork used for a ground slab may only have sidewalls pressed into the ground where it is in the shape of a tray as a formwork used for a suspended slab, and is supported by a scaffold until concrete sets. Apart from boards, steel or plastics, wooden planks are commonly used for the construction of a formwork. On business building sites, plastics and steel are commonly used as they reduce labor costs, while on low-budget sites, such as making a concrete garden path, the wooden planks are used as cheap.