Flow Rates

All the rates quoted on this page are shown in litres per second. Gutter capacities are based on BS EN 12056-3:2000, assuming a maximum distance of 50 x gutter depth, from high point to outlet. Longer gutters or gutters with corners exceeding 10 will have a reduced capacity. For further information contact  Technical Services.

Flow Chart CI

Rainwater Pipe Flow Rates

The Capacity of a rainwater system is usually dependent upon the capacity of the gutter outlet or flat roof outlet rather than the rainwater pipe. Please refer to BS EN 12056-3:2000, Section 6, Table 8 for capacities of vertical rainwater pipes.

CALL US NOW!

Don't wait anymore! Go ahead and send us your project details and we will send you a free quote in less than 24 hours. And remember, no strings attached!

Get A Free Quote!