Venting soil pipe

[johnegrey]

I've installed a new toilet and need to know how to vent the soil pipe satisfactorily. The toilet is in one of the central rooms of my bungalow (i.e. no external walls). Do I connect the pan to a branch connection and run a vertical vent from this? Can the vertical 'chimney' piece have any bends in it? Do I have to use 110mm pipe or can I go smaller? I'll have to box the vent pipe in so the smaller the better.

Cheers,

j

 

[Bahco]

Do you have an existing soil pipe outside your property?

If so, you may be able to use a sub stack with an air admittance valve.

Consult your building inspectors for a definitive answer.