waste connection in to horizontal waste run

[kooltech]

Hi

i'm re doing my kitchen - and have run in to a small problem. I have to install an built in washing machine & dishwasher - but there is a 42mm waste pipe from the kitchen sink running behind them - resulting in insufficent space to push the fully back to align doors etc.

The house has a single stack which runs down in a pipe box in the kitchen, then under the floor in the kitchen to the front of the house.

There is a shower wc and basin connected to the stack upstairs.

Can i re route the the waste pipe from the sink - taking it down verticall through the floor and connect to the horizontal section of the stack under the floor?

Any advice would be appreciated - only other option I can think of - is using an oversize worktop (695mm) to give more space behind the units.

 

[Barry98]

Could you not chisel the extra bit of space out of the wall the sink it back ?

 

[PETE 123]

Make a false wall with pipe within and bring units out same amount. Sounds a lot but may be better idea.

 

[Whn1]

Like bod says just chase it into he wall.

 

[Mike Jackson]

No reason not to drop it into the horizontal run as long as the connection is made properly. Sounds easier than mucking about chasing walls or building false walls.

 

[kooltech]

thanks guys, the connection to the horizontal seems the easiest option, but i wasn't sure if it was 'permitted' or if it would cause any problems?