Skyscraper Roof Drainage

The roofs on top of large buildings aren t flat.

Skyscraper roof drainage. This keeps the water safely away from the walls and foundation. Unlike gutter systems inner drains will not freeze up and crack or fail during the winter. The drains are usually placed near the center of the building. Flat roofs are sensitive architectural areas and it is critical to plan their drainage systems professionally.

Sizing a roof water drain. 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. If the water on these roofs does not drain fast enough then. The roof is sloped towards the drain through either tapered insulation or through joist modifications.

A building with a large roof footprint such as an airport mall warehouse convention centre or factory is well suited to a siphonic system because the weight of water on these buildings is a bigger concern. The rain flows down these drains which pa. Benefits of wavin quickstream siphonic roof drainage include smaller pipe dimensions fewer roof outlets and downpipes and reduced installation costs. The building and walls naturally protect the.

Typically each section of the roof forms a shallow bowl and at the center of each bowl is a drain. Also the roof itself may have a smaller slope and still drain properly. These will drain to somewhere near the center of the roof and down through the building to underground storm mains or a detention pond. Unless there is an effective way of draining off precipitation this can lead to excess loads being placed on the building s structure.

When rain falls onto a flat roof large volumes of water can collect rapidly. Roof drains from zurn include combination primary overflow control flow dual outlet siphonic retrofit and more which cater from educational to commercial needs. The next step is to determine each roof area that will be served by a separate leader drain pipe scupper or downspout.