BigInch thanks.. it's large pond... and the pipe is used to release some water.. and dont need a full fledge design Mr. Perry just need to choose one valve.. and you're right Latexman. Thanks all for your input.
Hi,
I am not too familiar with Valves. I have to select one to add at the end of a 12" PVC pipe that drains a man made lake when we want to lower the water level during the rainy season. So for the most part, there will be very little pressure in the line. Someone recommended a plug valve...
I see that most standards state to slope the inside of a catch basin at 1:12 (8.33%) minimum towards the outlet pipe. Has anyone seen a deviation from this?