What's the minimum fall for a foul pipe underground over a long distance like 70m? The 110mm pipe.
I know 1 in 40 is ideal. Also, is there a minimum depth the inspection chamber bottom should be from when it exits the property under building regs?
I know 1 in 40 is ideal. Also, is there a minimum depth the inspection chamber bottom should be from when it exits the property under building regs?