However the code does not specifically give an amount of slope.
Sloped concrete roof slab.
Feb 12 2018 the reinforcement detail of a sloped concrete roof that is supported by a beam.
A sloped concrete roof is much more complicated king confirms.
Embedded 3 4 inch into the roof slab after concreting these channels retain the insulation and serve as attachment points for interior ceiling finishes.
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.
For steeper slopes you will have to go to a 1 in.
Feb 12 2018 the reinforcement detail of a sloped concrete roof that is supported by a beam.
A concrete roof is exactly what it sounds like.
The general consensus is the minimum slope should be 1 8 per foot.
The important part is to have the top of the slab at door openings be at the 3 3 4 of exposed skirt board left.
A system for building sloped concrete roofs.
This would work out to exactly the 4 5 inches in 36 feet which you had guesstimated.
For example the florida based company hurricane proof systems offers a 7 inch 18 centimeter slab of concrete in three layers.
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 a mild slope such as the 1 in 20 slope required for a wheelchair ramp a 3 in.
A network of metal or plastic channels placed along the edges of the insulation board projects above it to support the roof.
Construction sloping roof using mixer truck latest technologies building sloping concrete roof.
A 2 slope will probably ensure better drainage we could also find no slope tolerance for use when a floor slope is specified.
If you aren t sure just describe the job to the concrete dispatcher and they will tell you what slump to use.