Hi can someone help,
I need to know how to work out the fall, I am putting in a rainwater soak away 5m from the annexe. What would the fall be, I have looked on various web sites and worked it out to be around 100mm is that right and if so how do I work this out. I also need to work out foul water fall for other drains is this a different calculation.
Thanks in advance.
Cliff
I need to know how to work out the fall, I am putting in a rainwater soak away 5m from the annexe. What would the fall be, I have looked on various web sites and worked it out to be around 100mm is that right and if so how do I work this out. I also need to work out foul water fall for other drains is this a different calculation.
Thanks in advance.
Cliff