Residential Roof Slab Thickness

Five to six inches is recommended if the concrete will receive occasional heavy loads such as motor homes or garbage trucks.

Residential roof slab thickness.

When installed however the shingles overlap doubling the thickness. Standard asphalt shingles add very little thickness to the roof because a standard three tab shingle is about 3 16 inch thick. A solid slab of concrete capping the top of your house. We would like to show you a description here but the site won t allow us.

For example we build residential in flat plate concrete which will typically have a column spacing of 20 oc and a slab thickness of 8 typ. In general 6 inch 150mm slab thickness is considered for residential and commercial buildings with reinforcement details as per design. For example one way slab thickness calculation is different and easier from that of two way slab. Methods used for finding slab thickness varies for different types of slabs.

With that in mind i ve seen slabs as thick as 16 18 due to column spacing. Commercial is typically steel w a composite deck so you ll have a 5 6 slab sitting on top of steel beams. For example the florida based company hurricane proof systems offers a 7 inch 18 centimeter slab of concrete in three layers. That will suffice on a roof with rafters set 16 inches apart with minimal roof loads.

Constructing the concrete roof deck. One concern is that the concrete must develop the compressive strength intended by the structural engineer in the design of the roof deck. Exact specifications vary but most concrete roofs are several inches thick. A concrete roof is exactly what it sounds like.

Slab on ground 1 4 minimum thickness of diaphragms. Standard concrete floor slab thickness in residential construction is 4 inches. Constructing a concrete slab for a structural roof is different from that for building a slab on the ground in that attention must concern two important objectives. Typically a project specification will reference aci 301 specifications for structural concrete which in turn references aci 117 specifications for tolerances for concrete construction and materials.

To prepare the base cut the ground level to the proper depth to allow for the slab thickness. Minimum thickness most roofs will be sheathed in plywood at least 3 8 inch thick.