Glue is fine. The big concern would be the depth you are working.
OSHA requires ditch shoring at 4 feet, you are well below that.
Why so deep? What kind of soil? What kind of machinery?

(top posted for your convenience)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Keep the whole world singing . . . .
DanG (remove the sevens)




"J.A. Michel" wrote in message
...
I'm planning on running a new sewer line myself. Is 4" schedule
40 sufficient for sewer line when it's buried to a depth of
10-12ft? What about coupling the pieces of pipe together? Are
glued couplers sufficient, or should the joints have rubber
sleeves over them in addition to glued couplers?

TIA,


--
Joe Michel
NAR 82797 L2
http://home.alltel.net/jm44316