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Construction Coordinator 1 to 2 Lesson 10
Terms in this set (10)
Which type of vibratory plow is an attachment to a tractor or trencher and requires a ground person to manually guide the conduit into the feed chute as the plow cuts through the ground?
The modular vibratory plow
In which areas is the use of a vibratory plow much more economical than trenching?
In undeveloped areas where a large tractor can be maneuvered.
How should coaxial cable be plowed using a plow machine without a cable reel carrier?
Lay the coaxial cable along the bury route and have a helper guide the coaxial cable into the feed chute of the forward-moving plow.
When preparing to plow conduit, how long should the starter trench be?
A length that allows the plow blade to be lowered to the burial depth without violating the minimum bend radius of the attached conduit.
What mechanisms do pit dry boring machines utilize to bore through soil and underneath obstacles?
Hydraulic power, a rod pusher, steel rods, and a piercing tool.
When using a surface dry boring machine, what is the preferred forward speed of the machine?
A speed that allows the boring bit to work freely without being forced.
When backfilling a boring pit or trench, what should be done to protect the buried conduit or cable in conduit (CIC)?
Remove accessible rocks and backfill all but the top 12 inches of the pit or trench with sand.
What must all fluid assisted boring machine operators and crew members do in case of an inadvertent utility cut or other unforeseen accident?
Follow all company and equipment manufacturer guidelines and safety procedures.
What do the electrical grid mats that are bonded to a fluid-assisted boring system provide?
Operator protection, in case of contact with electrical lines, the boring equipment and machine operators are at the same electrical potential.
When using a fluid-assisted boring machine, why is the drilling fluid added when pulling the drill string back through the hole?
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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Construction Coordinator 1 to 2 Lesson 1
Construction Coordinator 1 to 2 Lesson 2
Construction Coordinator 1 to 2 Lesson 3
Coordinator 1 to 2 Lesson 4
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