What mechanisms do pit dry boring machines utilize to bore
through soil and underneath obstacles? - ANSWER Hydraulic
power,a rod pusher steel rods and a piercing tool
When backfilling a boring pit or trench what should be done to
protect the buried conduit or cable in conduit CIC - ANSWER
Remove accessible rocks and backfill all but the top 12 inches of the
pit or trench with sand.
When using a fluid-assisted boring machine, why is the drilling fluid
added when pulling the drill string back through the hole? -
ANSWER To help the rotating back-reamer expand the drilled pilot
hole diameter and reduce the drag on the conduit that is being
pulled into place
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