Flat Roof Drain Detail

Details and technical drawings of the flat roof drainage as downloads in the practical pdf dxf and dwg formats.

Flat roof drain detail.

Alwitra flat roof details. A rooftop garden or additional outside living space are the top reasons people choose flat roofs. The distinguishing feature of a siphonic roof drain is the air baffle. One of the most overlooked items on a flat roof is the draining system.

Your building and location can help determine which drain will fit your roof needs. Roof drains from zurn include combination primary overflow control flow dual outlet siphonic retrofit and more which cater from educational to commercial needs. The detail drawings are grouped by details and can be downloaded below in dwg or pdf format. To design a sloped or flat roof drainage system we need to know the anticipated maximum rainfall rate and the flat or projected roof area.

6 24 2014 david howard aia said. A siphonic roof drain looks much like a traditional roof drain. Open end scuppers allow for debris to be washed off the roof unlike a drain or gutter that gets full of debris. Flat roofs that are designed to have scuppers as a drainage system are almost maintenance free.

Other than the baffle a siphonic roof drain has the same features as a traditional roof drain including a. This air baffle is engineered and tested to prevent air from entering the piping system at peak flows. Download free high quality cad drawings blocks and details of roof drains organized by masterformat. Some observers suggest it s harder to replace a flat roof than a traditional pitched shingle roof because of the labor required to remove its layers especially on older flat roofs.

Flat roof drains scuppers gutters and drainage systems on flat roofs. Firestone has developed cad drawings of its tpo installation details to assist roofing professionals with the specification of firestone tpo roofing systems. Flat roofs are hard to replace. What is the general area of a flat 1 4 1 0 slope single ply roof for each roof drain ratio for the number of roof drains roof area.

Hold your cursor over the file name to view when a drawing was last updated. This could mean flat roofs may not raise the same red flags they used to. More attention should be given to the location of a drainage system to avoid future problems. The most critical of these issues is the flat roof drainage systems.