Floor Slab Thickness Residential

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.

Floor slab thickness residential. The same floor if framed with 2 by 12s will be 13 1 4 inches thick. Depending upon the type load coming upon the slab the thickness is varied. 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. 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.

Joists in home construction are usually made with 2 by 10 or 2 by 12 lumber. Standard thickness of the garage floor slab used worldwide is 6 inches. Standard concrete floor slab thickness in residential construction is 4 inches. 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.

For a competent contractor working with a decent subbase that thickness would easily keep the average above the 5 5 8 inches needed to satisfy the average thickness tolerance. Foundation and floor slabs for buildings located on expansive soils shall be designed in accordance with section 1808 6 of the california building code. For a 6 inch slab therefore you would set your forms for a 6 inch thick slab. Five to six inches is recommended if the concrete will receive occasional heavy loads such as motor homes or garbage trucks.

For slab on ground floors it provides an understanding of the footing slab selection design detailing and construction requirements contained in as 2870 and. 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. 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. Concrete photos articles info design ideas plus local concrete contractors for colored stamped and textured concrete patios driveways pool decks interior stained floors concrete countertops and many more decorative concrete applications.

The bulk of the floor s thickness comes from the joists which are the horizontal beams that carry the floor s weight.