Roof Slope Slab

Set forms so that the concrete slab surface slopes a minimum of two percent or 1 4 inch per foot to provide adequate drainage.

Roof slope slab.

If the problem is statically determinate the equilibrium equations would. A 2 slope will probably ensure better drainage we could also find no slope tolerance for use when a floor slope is specified. Based on the boundary condition you can determine the axial thrust and the bending moment. Percentage pitch height change length x 100.

Hips and valleys have to be engineered and a lot of it is using experience and professional judgment on the hoffman home king spec ed a steel i beam at the ridge line with the lite deck running perpendicular to the ridge. A solid slab of concrete capping the top of your house. For example the florida based company hurricane proof systems offers a 7 inch 18 centimeter slab of concrete in three layers. Convert the change of height over the distance into a percentage pitch using the following equation.

For example a slope 20 feet long that drops by 1 1 2 feet has a percentage pitch of 7 5 percent 1 5 20 x 100 7 5. Exact specifications vary but most concrete roofs are several inches thick. Aci 117 90 st andard specifications for tolerances for concrete construction and materials gives a level alignment tolerance of 3 4 inch for top of slab elevation of slabs on grade. A sloped concrete roof is much more complicated king confirms.