Business and Management

The Different Kinds Of Concrete Slabs

A concrete slab is an important and common element in today's modern construction. It is a shallow, reinforced concrete structure, wider compared to its depth. 

A thick concrete slab supported on the subgrade or foundation in domestic and industrial buildings, is used in the construction of the ground floor of the building. A thin precast concrete slab hung between steel frames is used to make the floor and ceiling in tall buildings and skyscrapers. If you’re looking to purchase good quality concrete slabs then visit MAXRaft.

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There are different types of concrete slab, namely one-way slab, two-way slab, and a flat plate or flat slab. In a unidirectional slab, the support is on four sides and has a greater span on one course than the other. 

In the case of a two-way slab, it is supported on all four sides and the reinforcing steel is perpendicular to all sides. If the slab is supported directly on columns without the aid of beams or girders, it is called a flat slab or flat plate. A flat slab is more advantageous as it involves simple formwork and offers better fire protection.

Thermal performance

Two main thermal considerations are; firstly, the insulation of a floor and secondly the high thermal mass. In the building made according to the old system, the slabs can consume heat from the room since they are poured directly on the floor. 

Where, as in modern construction, the concrete slab may have underfloor heating pipes, and these slabs are poured over expanded polystyrene – a layer of insulation. An uninsulated slab is used in the outbuildings, which cannot be cooled or heated to room temperature. 

Here the slab is poured directly onto a rocky substrate, which will prevent both overheating and freezing by keeping it at room temperature.