Depth of 110mm Pipe inside house

[wcavanagh]

So I have cut and dug trenches inside my cottage for drainage and WC as per below. I cant find any guidance on depth inside they should be. BS EN 12056-2:2000 only seems to mention outdoor etc. The floor will have 40mm insulation, then 60mm screed on top.

I can go too deep, as I need to get the run to connect to existing Septic tank.

 

[r896neo]

There isn't really a regulation for it as far as i know. obviously go as deep as you can with your invert level. Outdoors if a pipe must be shallow for some reason then its protected with a concrete capping, of course indoors thats going to happen anyway.

For saftey place some dpm/dpc over the pipe to give a clear difference in back fill and thus giving someone in the future a chance of finding it without damage.

 

[Terrywookfit]

Ask the BCO.

 

[JohnD]

very impressed with the neatness of that trench. What wheel is it?

 

[HERTS P&D]

The question is: will you be in by Christmas?

Andy

 

[wcavanagh]

Thanks all for the info.

I cant trench lower than 300mm as I need to get the fall required to join into the chamber outside and onward to the septic tank. I will concrete over once I get the levels set etc.

I just used a Stihl saw to cut the edges and broke out the middle, I am a bit if a neat freak so guess that shows.

No chance of being in for Christmas, doing all the work myself we are looking at another year at least.