Inspection chamber connection - Not much space!

[granv]

In the process of replacing a P trap old toilet with a new one in the downstairs cloakroom. The old connection goes straight down through the concrete floor and into an IC immediately outside - Inspection Chamber Pic (thought I'd attach a picture - I don't think enough get posted in the forum!)
My thinking is that the new soil pipe will come out of the back of the toilet, through the wall, into a 92.5 bend into the ground, into a soil stack bend and into the chamber, replacing the existing clay pipe. However, as you can see, its very tight.
Is there an easier way of doing this, or am I going to have to take the chamber apart brick by brick on the far side to make enough access. Thanks in advance!
(ps, yes, those 32mm pipes in the picture do end up in the IC - I've just moved into this house of horrors!!)

[flowjoe]

It looks a bit grim granv

Given that you will have a 225mm chamber wall and concrete base possibly surrounding the clay branch line i would say your best bet would be to drop the chamber to just above the level of your sand & cement benching so that you have a fighting chance of either making a connecting to the branch or butting up onto the branch in the channel. You can then raise the chamber in concrete sections to ground level off the original base

The chamber looks too shallow and small for an internal dropshaft and im afraid the days of the plop and drop connection have long gone my friend