Roof Slope Slab

A concrete roof is exactly what it sounds like.

Roof slope slab. Sloping slabs under gravity load would be subjected to bending and axial thrust. 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 2 slope will probably ensure better drainage we could also find no slope tolerance for use when a floor slope is specified. 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. If the problem is statically determinate the equilibrium equations would. 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. Based on the boundary condition you can determine the axial thrust and the bending moment.

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. Set forms so that the concrete slab surface slopes a minimum of two percent or 1 4 inch per foot to provide adequate drainage. A solid slab of concrete capping the top of your house. Exact specifications vary but most concrete roofs are several inches thick.