connecting 40mm waste to a big hole in the ground????

[obseen16]

hi all.
got a job where an outside toilet is to be taken out. simple enough, but in its place the customer wants an old belfast sink putting in. problem is that i cant take the waste out the wall or sides as there is no drains available, the only place it could go is down the hole thats left from where the toilet pan went, what is the best way to fit the waste into this hole? i have thought of putting the 40mm waste straight into the hole and just concrete up the big gap thats left. probably not the best way to go at it. is there any fittings i can get to push into the hole and reduce down? or does it look like ill be better off cementing it in place?????

any advice or products you can think of would be appreciated.
cheers guys,

P.s no snide remarks please. :P

[welly2510]

hi, i take it the big hole is the 110mm drain pipe, if this is the case you can get a reducer to fit 110mm pipe, then you use a 40mm boss adapter to fit to waste pipe.

[manx12]

use a mcalpine DC1-BL or DC1-GR ones grey the other is black

Toolstation

Then reduce down to 40mm..

[justlead1]

Hi
Whether you cement in or use a fitting and assuming the the drain is close to wall. Come out of drain with a bit of 2" pipe fit a 92.5 degree tee with access plug for roding and connect to vacant branch with 1.5" waste form butler sink.
Good Luck

[obseen16]

cheers for the advice guys gonna try a proper connection like the one manx showed me, if that fails ill go to last resort of cementing it in. think ill manage tho.