Roof Slope Slab

For example the florida based company hurricane proof systems offers a 7 inch 18 centimeter slab of concrete in three layers.

Roof slope slab.

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 concrete roof is exactly what it sounds like. A 2 slope will probably ensure better drainage we could also find no slope tolerance for use when a floor slope is specified.

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. Percentage pitch height change length x 100. Use a scratch template typically a piece of 2 by 4 or 2 by 6 lumber equal to the specified slab thickness with stakes attached to the top surface at each end or a string line across the top of the forms to. 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.

A sloped concrete roof is much more complicated king confirms. Based on the boundary condition you can determine the axial thrust and the bending moment. If the problem is statically determinate the equilibrium equations would. Convert the change of height over the distance into a percentage pitch using the following equation.