Skyscraper Roof Drainage

These will drain to somewhere near the center of the roof and down through the building to underground storm mains or a detention pond.

Skyscraper roof drainage.

The drains are usually placed near the center of the building. Typically each section of the roof forms a shallow bowl and at the center of each bowl is a drain. This form of roof drainage is preferred if a clean exterior appearance is desired. The first step in sizing a roof drain is to calculate the surface area of the roof that the drains will be covering as well as the average hourly rainfall rate at the building location.

The next step is to determine each roof area that will be served by a separate leader drain pipe scupper or downspout. Benefits of wavin quickstream siphonic roof drainage include smaller pipe dimensions fewer roof outlets and downpipes and reduced installation costs. This keeps the water safely away from the walls and foundation. They re mostly flat but they re not perfectly flat.

Roof drains from zurn include combination primary overflow control flow dual outlet siphonic retrofit and more which cater from educational to commercial needs. If the water on these roofs does not drain fast enough then. When rain falls onto a flat roof large volumes of water can collect rapidly. The roofs on top of large buildings aren t flat.

The building and walls naturally protect the. The rain flows down these drains which pa. The roof is sloped towards the drain through either tapered insulation or through joist modifications. Unless there is an effective way of draining off precipitation this can lead to excess loads being placed on the building s structure.

Unlike gutter systems inner drains will not freeze up and crack or fail during the winter. Also the roof itself may have a smaller slope and still drain properly. Sizing a roof water drain.