Thickness Of Concrete Roof

The roof needs to be thick in order to provide insulation and proper protection.

Thickness of concrete roof.

Minimum thickness of concrete structural elements based on aci 318 14 irc 2009 is 456 2000 and ubc 1997 is presented. Goodwin in concrete energy conservation guidelines publication eb083 01b of the portland cement association. Leaks are rare generally caused by faulty construction practices and are easily repaired. Gypsum concrete roof deck systems consist of a form board wire.

The flat concrete roof itself can be up to 7 inches thick although the greater the thickness the more the concrete will need be poured in increasing numbers of layers with each one needing to dry before the next is poured. An exception to this standard however may occur if you intend to install slate concrete or tile shingles on your roof. Data from that publication are given below together with the oven dry unit weights that are equivalent to the normally dry unit weights. Flexural strength can be assumed to be 33ksi unless a new single ply system is contemplated that requires a higher pull out strength.

The savings in eliminating conventional roofing materials will also offset the cost of the concrete roof solution. Concrete tile will never hold its color as well as clay says ken mcgee owner of the tile man a supplier and installer of concrete and clay roof tiles in louisburg n c. For example the florida based company hurricane proof systems offers a 7 inch 18 centimeter slab of concrete in three layers. Thickness of a steel roof deck can be determined at a roof hatch where the edge of the deck may be available for measurement with a micrometer.

R values have been given on a slightly different normally dry unit weight basis by stanley e. Minimum thickness of concrete slab beam column foundation and other structural members is selected to meet the design requirements as per standard codes. A concrete roof is exactly what it sounds like. Roofing materials have not been used on concrete roofs on houses constructed on the island of guam over their 50 year history.

A solid slab of concrete capping the top of your house. Concrete thickness for flatwork such as slabs on grade and driveways a minimum thickness of four inches is required but increasing the thickness to five inches can add nearly 50 percent to the load bearing capacity.