Floor Slab Thickness Residential

To prepare the base cut the ground level to the proper depth to allow for the slab thickness.

Floor slab thickness residential.

The granular material serves as a capillary break and a place to store the water until it can be absorbed back into the surrounding soil. Foundation and floor slabs for buildings located on expansive soils shall be designed in accordance with section 1808 6 of the california building code. Concrete slab on ground floor systems and suspended floors suitable for residential buildings ranging from single detached houses to medium density buildings of apartments and flats. Five to six inches is recommended if the concrete will receive occasional heavy loads such as motor homes or garbage trucks.

Capillary break layers under floor slabs are typically comprised of 6 to 8 inch thick layer of 3 4 inch granular material that is gap graded to increase drainage rates. The thickness of the garage floor slab depends on many factors such as types of loads coming upon the slab climatic condition design mix of the concrete and span of the concrete. 1 3 minimum thickness of slab on the ground. Standard thickness of the garage floor slab used worldwide is 6 inches.

Ubc recommends minimum thickness of concrete floor slabs supported directly on the ground to be 89mm whereas bcgbc4010a apply structural principles to residential low rise constructions determined minimum thickness to be 100mm. The bulk of the floor s thickness comes from the joists which are the horizontal beams that carry the floor s weight. The same floor if framed with 2 by 12s will be 13 1 4 inches thick. Slab on ground and other foundation systems which have performed adequately in soil conditions similar to those encountered at the building site are permitted subject to the approval.

Joists in home construction are usually made with 2 by 10 or 2 by 12 lumber. Depending upon the type load coming upon the slab the thickness is varied. For slab on ground floors it provides an understanding of the footing slab selection design detailing and construction requirements contained in as 2870 and. When accounting for joist width subflooring flooring and standard ceiling drywall a floor framed with 2 by 10s will be very close to 11 1 4 inches thick.

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