Concrete Floor Slab Thickness Uk

The floor may vary in thickness over certain parts depending on ground conditions and the order in which the concrete slabs are laid.

Concrete floor slab thickness uk. Methods used for finding slab thickness varies for different types of slabs. Upgrading concrete slab floors converting existing unheated basements garages and storage areas into habitable rooms is a popular way of increasing living space without constructing an extension. Thickness of concrete slab depends on loads and size of the slab. It s essential that suspended concrete floors are properly insulated from blasts of cold air blowing through the subfloor void underneath your feet.

If the insulation is going below the slab the damp proof membrane dpm is laid next followed by the insulation a polythene separating layer and the concrete slab. In general 6 inch 150mm slab thickness is considered for residential and commercial buildings with reinforcement details as per design. 6 8 inches 0 15 0 2 m side walks barn and granny floors. 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.

Floor slab designing buildings wiki share your construction industry knowledge. Depending on the use of the building the slab can then be finished ready for use or receive a screed suitable for a floor finish. The bulk of the floor s thickness comes from the joists which are the horizontal beams that carry the floor s weight. It is preferable to cover the area being worked on with just one large sheet but in cases where more than one sheet is required joins should overlap by at least 150mm and be sealed to prevent any moisture coming up through the new concrete slab.

5 6 inches 0 125 0 15 m porches home garage floors. Ground bearing concrete floor slabs should be at least 100mm thick including monolithic screed where appropriate. The term floor slab usually refers to a floor that has been formed using concrete and generally steel reinforcement and may form part of the structure of a building. The building regulations backstop target u value for ground floors is 0 25w m2k which should be easily achievable with 75mm or 100mm thick rigid insulation boards laid over the surface.

For example one way slab thickness calculation is different and easier from. If the building already has air bricks in order to ventilate existing floor voids then ducting should be provided to allow air to pass through and into the void. Thicknesses of dpms vary but 1 200 gauge is a common thickness. Joists in home construction are usually made with 2 by 10 or 2 by 12 lumber.

It may form the floor of a basement at ground level or at upper levels. 4 inches 0 1 m.