Soil Pipe drop advice....

[Suffolk_J]

Hi,

 

Apologies that this is probably a very basic question, at least I hope it is. Please see my rough drainage plan ahead of beam and block attached, would appreciate any suggestions/feedback. I think I may be able to lose one of the inspection chambers with either a sweeping bend or by coming out further to allow a straight run.

 

My main query is that the two soil pipes entering the inspection chambers in line will exit the build at the same height, I need the fall between the 2 inspection chambers to be around 130mm to maintain 1:40. Is the correct/best way to do this to increase the drop just prior to entering the inspection chamber using a 45 degree angle?

 

I'm trying to visualise this and just want to think ahead before putting soil pipe in place under b&b.

 

Thanks!

 

 

[Dave Jones]

as long as you have a min of  12/13mm /M fall then just make both runs work to the final manhole. May need to drop one a little more or move the chamber closer etc.