Buried pipe Trench

Dear all specialists,

Do you know the minimum width of the trench for a 100mm diameter pipe, which will be considered as embankment backfill ? Is there any standard formula to determine the trench width for embankment backfill for the various pipe size ? Please guide me.

Thank you.

Regards,
cckla

[Non-text portions of this message have been removed] Received on Fri Aug 06 00:55:00 2004