The designed max drain capacity is 4.3 m3
be calculated by the formula Q 1⁄4 lgnA ffiffiffiffiffiffiffiffiffiffiffiffi
l = 0.6–0.8, contraction coefficient g = 0.7–0.9. The relationship between the drain tower ability and the water level is as shown in
Fig. 7.
/s. The drain flow can
2gHn p , the flow coefficient