Below is an image taken out of Plumbing Africa, let us look past the water pipes and only focus on the 110mm UG drainage pipes.

This is a widespread problem on today’s construction sites, the required drainage levels can’t always be achieved and the plumber is left to try and find a solution to the problem.

So, what to do in this situation?

I have attached an easy to understand diagram below of a solution that is easy to install and cost effective.

The diagram is of a basic overflow gulley head installation that can ensure your installation is compliant with the standards on completion.

Written by Mark de Wet

IOPSA National Technical Manager