Roof Drain Occupied Roof

Building drainage roof drains.

Roof drain occupied roof. No hub cast iron high volume roof drain with ductile iron dome. Usually scuppers are part of the backup drainage system that helps the roof shed excess stormwater. Cast iron roof drain with 2 in. Storm water can be received in three different ways.

Inner drains are resistant to freezing but can require careful maintenance to prevent problems. Inner roof drains are used on flat roofs and include a low section or channel that collects water and feeds it into a concealed drain that leads to an underground drainage system. Watts drainage products rd 300 r series 6 in. They are incorporated into the walls or parapet.

The main benefit of inner drains is that the system is hidden from view. A roof drain is installed on a building roof or canopy to convey storm water from the roof or canopy to the storm drainage sewer or retaining area. Inner roof drains. A scupper is a drainage point on the edge of the roof.

Roof drains from zurn include combination primary overflow control flow dual outlet siphonic retrofit and more which cater from educational to commercial needs. Pitched roofs not surrounded by parapet walls are generally drained by gutters. Watts drainage products rd 300 r series 4 in. Close coordination with structural engineering relative to location and roof pitch as well as proper sizing in accordance with local climactic conditions are the basis for the design of the roof drainage system.

If a scupper is part of the overflow system then it will be a few inches typically two inches above the roof surface.