Just spoke with the architect concerning the drainage design as recommended by various members here.
I'll have to check this but the existing inspection chamber along the right side of the house has an invert level of 495mm I am told. If so then the idea of the run from the kitchen gulley to this chamber might be ok (except it'll need to be relocated to avoid the new foundation trench):
14m run at 1/60 leaves an IL of 260mm
14m run at 1/80 leaves an IL of 320mm
So is it feasible to have a radial bend and rodding eye across the back of the extension? The advantage of this would be the new floor slab would not cover the drainage run making it a simpler build but is it too shallow?
Thanks once again.
Matt
I'll have to check this but the existing inspection chamber along the right side of the house has an invert level of 495mm I am told. If so then the idea of the run from the kitchen gulley to this chamber might be ok (except it'll need to be relocated to avoid the new foundation trench):
14m run at 1/60 leaves an IL of 260mm
14m run at 1/80 leaves an IL of 320mm
So is it feasible to have a radial bend and rodding eye across the back of the extension? The advantage of this would be the new floor slab would not cover the drainage run making it a simpler build but is it too shallow?
Thanks once again.
Matt