Sewer pipe from inside to outside

[Ladybrickie]

Hi. Please can someone tell me the correct way to install 110mm, long radius bend sewer pipes from inside (bottom of stack) to outside. Am I right in thinking they have to be 'sleeved' and precisely what does this mean please? I was going to cement them into the two skins of wall and directly into the concrete floor but I will get shot by the building inspector if this is wrong. Thanks.

 

[noseall]

The pipe needs to pass through the wall without interference from the masonry allowing enough of a gap for building settlement.

This basically means lintelling over the pipe so that there is about 50mm of clearance above the pipe and the same down the sides.

The stack will finish at the bottom with a regular 87.5mm rest bend.