Sloped Concrete Roof Slab

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.

Sloped concrete roof slab.

Feb 12 2018 the reinforcement detail of a sloped concrete roof that is supported by a beam. The general consensus is the minimum slope should be 1 8 per foot. For steeper slopes you will have to go to a 1 in. This would work out to exactly the 4 5 inches in 36 feet which you had guesstimated.

If you aren t sure just describe the job to the concrete dispatcher and they will tell you what slump to use. A network of metal or plastic channels placed along the edges of the insulation board projects above it to support the roof. A concrete roof is exactly what it sounds like. For example the florida based company hurricane proof systems offers a 7 inch 18 centimeter slab of concrete in three layers.

A 2 slope will probably ensure better drainage we could also find no slope tolerance for use when a floor slope is specified. From a structural standpoint low slump concrete is good. 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. Embedded 3 4 inch into the roof slab after concreting these channels retain the insulation and serve as attachment points for interior ceiling finishes.

For a mild slope such as the 1 in 20 slope required for a wheelchair ramp a 3 in. Exact specifications vary but most concrete roofs are several inches thick. However the code does not specifically give an amount of slope. Feb 12 2018 the reinforcement detail of a sloped concrete roof that is supported by a beam.

Feb 12 2018 the reinforcement detail of a sloped concrete roof that is supported by a beam. Construction sloping roof using mixer truck latest technologies building sloping concrete roof. A sloped concrete roof is much more complicated king confirms.