NCCCO Digger Derrick Practice Questions - NCCCO Digger Derrick Operator (DDO) Certification Exam

What is the primary purpose of cribbing under outrigger pads on soft soil?

To reduce hydraulic pressure in the outrigger jack To distribute the outrigger reaction over a larger bearing area To raise the truck high enough to clear curbs To electrically isolate the truck from the ground

Correct Answer:

To distribute the outrigger reaction over a larger bearing area

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