W/mac waste pipe

[maxmanners]

Hi
I am moving into a block of purpose built flats. Can I T into a hand sink 32 mm pipe that joins a 150mm vertical waste pipe 450 mm away? Or does it have to be a 40 mm pipe?
Regards
Max

 

[jj4091]

If you Tee into your soil stack(150 mm pipe) then you will get all the nasty smells backing up from the sewers, I am not sure if it is allowed under building regs. anyway, but if it is you will need some form of trap.

 

[maxmanners]

Hi
Thank you for the rapid response.
Yes I am going to install a U bend but am just concerned is a short stretch of 32 mm pipe can handle a w/mac flow?
Thanks
Max

 

[jj4091]

yes it should be ok,but make sure the end of the pipe is higher than the washbasin waste