bridging over a drainpipe

[bagger]

im digging footings out for a dwarf wall and have come across a drainpipe,
ive been told to bridge it but how do i go about it? do i dig deeper than the pipe then shutter it off making sure some concrete goes underneath or can i get away with digging half way down the pipe and then shuttering it off

 

[Static]

Depends where it is in the footing depth..
Near the top then shutter around it and put a couple of precast lintels for the wall over..
Near the bottom/middle then think about encasing the pipe in some compressable material and sleeving it through the footing..

Ah here we are:
View media item 22047Taken from NHBC standards on trench footings..

 

[noseall]

Wrapping the pipe in compressible material, i.e. 100mm fibreglass cavity batts, usually satisfies b.c.

This is simply wrapped around the pipe and duct taped to secure it.