How to add soil stack to an inspection chamber

First open your inspection chamber and look into the chamber . If it’s a plastic base chamber their will be extra 110mm inlets just pick one of the inlets that going the right detection for you new pipe If it’s a brick manhole you will need to break into the manhole and reform the benching This would be the same detail if it’s a concrete manhole chamber You will need to test the the drainage and get building control out to inspect Hope this helps

hi you will have to dig down to the depth of the inspection chamber, you can then connect your new pipe that is going to go to your stack pipe. with out looking at your proposed project this is just giving you an idea of how to do it. Regards Steve.

The inlet pipe has to enter the manhole at a similar level to the outlet can be very slightly higher but never lower. This will prevent the foul waste from dropping and causing it to splash which could lead to solids such dried up toilet paper building up and causing a blockage. I presume you will have a vent on the stack. If in doubt get hold of local building inspector and ask his advise can go wrong then . Hope this helps

You can vent an insp ch quite easily by connect a stub pipe , bore or break a hole into the side and rise pipe up above ground and fix to wall making sure it’s above the highest window or you’ll smell it