maximum water depth / diameter in open channel flow
maximum water depth / diameter in open channel flow
(OP)
We are checking a roof drainage pipe (30m length- 10" dia) that water depth will be about 75% of the pipe diameter. some codes require 67% max ratio. what is the potential risk of allowing water depth to exceed the code requirement given that the pipe length is only 30m (from the downspout to the sump)





RE: maximum water depth / diameter in open channel flow
If you allow the water to back up, you may have a leak on the roof.
RE: maximum water depth / diameter in open channel flow
RE: maximum water depth / diameter in open channel flow
Learn from the mistakes of others. You don't have time to make them all yourself.
RE: maximum water depth / diameter in open channel flow
At 75% depth you are at 91% of the max flow... (max flow is at 82% depth)
Then passing from 67% to 75% you divide by 2 the security margin...
With the forecast of stronger storm in coming years, I let you make the calculation of damage versus installing larger pipes.