Scour valves are provided ______________?
Found an error? Read our corrections policy and submit a sourced correction below. You can also share a useful explanation in your own words.
A. at the foot of rising main along the slope to prevent back running of water
B. at every summit of rising mains
C. at street corners to control the flow of water
Found an error? Read our corrections policy and submit a sourced correction below. You can also share a useful explanation in your own words.