Thanks Holboob,
I have decided to reroute the drain. Thought it will be better in the long run to divert the drainage alongside the extension rather than running underneath the slab.
Hi, I have planning permission for a single storey extension to the rear of the house. The existing drainage has an invert level of 300mm (very shallow). the house is a 1950's bungalow. The drainage inspection chamber is only 750mm away from the corner of the exisitng bungalow. Imagine a line from o...
