How did it all fit back in?

[Pete]

Just finished my drains, I have put in 60 l/m of 110mm pipe, 2 x 460 i/c and used 5 c/m of pipe bedding. I was expecting to have quite a bit of spoil to get rid of and it has all gone back in including quite a lot of large stones etc from the house build. Made my day and as a self builder you need days like this, eh Ian? @AnonymousBosch

[Russell griffiths]

Your pipe has probably collapsed and all the excess soil is inside the pipe. 

????