Internal Roof Drain Details

1 rate of precipitation.

Internal roof drain details.

Properly locate roof drains scuppers and gutters to remove water from the roof s surface. Design saddles or crickets to create positive drainage to the drain. 2 total area of roof. This is a drainage point that can be installed across the roof s surface even in the centre of the roof.

Other than the baffle a siphonic roof drain has the same features as a traditional roof drain including a drain body flashing ring dome strainer and fastening hardware. And 4 area handled by each drain. In contrast to traditional roof drains siphonic roof drains are not designed with a large diameter or deep sump bowl because their operation is by means of sub atmospheric. Provide extra insulation around the drain head to prevent condensation.

Zurn makes it easy to size roof drains. Recess the drain below the roof surface. The four things you will need to know are. Download free high quality cad drawings blocks and details of roof drains organized by masterformat.

Materials use materials consistent with the roof membrane manufacturer s requirements. When sizing roof drains the limiting factor for the amount of water each drain will carry away is the size of leader therefore increasing. 3 size of leader required.