3 Area Roof Drain

Recommended for installation in flat areas with decks that are constructed of steel wood or concrete these.

3 area roof drain. Cast iron roof drain with 2 in. Factors which affect proper roof drainage are deck slope drain size and placement of drains. Take the roof s total square footage and divide by the total square footage handled by one drain. These drains are distinguished by having higher rims.

Copper roof drain with overflow horizontal outlet. Our exclusive dual functional structural deck flange and combination roof drains streamline specifications saving installation time and labor. Roof drains watts roof drains provide flexible solutions for specifiers and installers in any commercial roof application. Roof drains provide effective internal drainage of water from the roof surface and are a practical year round solution to removing water from the roof surface in any weather or season.

Roof drains from zurn include combination primary overflow control flow dual outlet siphonic retrofit and more which cater from educational to commercial needs. This table is based on zurn s roof drain vertical requirement for horizontal roof areas at various rainfall rates table. The result is the number of drains needed. The full flow capacity of a drain is not realized until the water reaches approximately 2 5 above the inlet in a four inch drain and 3 5 in a six inch drain.

You also must include half of the area of any vertical walls that may divert rain to the roof. Cast iron roof drain. Watts drainage products rd 300 r series 4 in. Calculate drains needed.

Determining the exact roof area and the number of.