Archive | Underground Conduits

There are three types of installation or construction conditions for underground conduits, viz.: (i) Trench condition, (ii) Embankment condition, and (iii) Tunnel condition. Trench condition exists when the conduit is installed in a relatively narrow trench (not wider than twice the external diameter of the conduit) cut in undisturbed soil and then covered with earth backfill up to the original [...]