Floor Drain Calculation

A particular pipe size on a given grade will only carry a certain amount of water.

Floor drain calculation. Factors which affect proper roof drainage are deck slope drain size and placement of drains. Q flow rate gallons per minute cd discharge coefficient 0 6 assumed a open area of grate square inches g acceleration 32 ft sec sec h head above floor inches. Sizes the piping needed on the acreage to. Recommended grate free areas for various outlet pipe sizes 1 1 2 2 04 3 06 4 08 2 3 14 4 71 6 28 3 7 06.

From your backyard patio to the neighborhood aquatic center from the factory floor to a professional sports facility nds offers superior quality drainage solutions for every environment. Checks the capacity of drain tile on existing drainage systems. Sufficient or if exterior surface flow calculations are required. Calculate drains needed.

The above sizing data is offered as a guide only. The prinsco drainage calculator estimates the capacity of tile drainage systems. 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 sizing of roof drains must be large enough to quickly carry away all. 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. Take the roof s total square footage and divide by the total square footage handled by one drain. Drain open area flow rate calculations assumed values units used in spreadsheet calculation.