NCCCO Lattice Boom General Knowledge Questions And Answers Graded A+

NCCCO Lattice Boom General Knowledge Questions And Answers Graded A+
The lattice boom is designed to take winds of up to 20 mph. from the
side plus a full rated load, plus a direct side load equal to what percent of
the rated load? - Precise Answer ✔✔2%
The part of the load chart governed by stability is based on what
percentage of capacity while a crawler crane is working over the side
quadrant? - Precise Answer ✔✔A. 75%
The most unstable working quadrant for a crawler crane is the; - Precise
Answer ✔✔Side
What type of capacity is listed on a crane load chart? - Precise Answer
✔✔Static
If the manufacture of a particular crane does not specifically permit pick
and carry operations what procedure must be followed during this
operation? - Precise Answer ✔✔Don't make any pick and carry lifts
What is the main purpose of a jib/extension? - Precise Answer ✔✔To
extend reach higher or up and over
When the number of layers of rope on a drum increase the line
pull___________. - Precise Answer ✔✔Decreases
NCCCO Lattice Boom General Knowledge Questions
And Answers Graded A+
When handling boom sections, the best place for slings to be attached is;
- Precise Answer ✔✔At the pin connections at the ends of the top chords
Placing timber blocking under the tips of the tracks on a crawler crane
will; - Precise Answer ✔✔Make the crane more stable
What is the major effect of stopping suddenly a rapid swing while
operating long boom crane? - Precise Answer ✔✔Action may cause the
crane boom collapse and/or overturn the crane
According to B30.10 hooks shall be removed from service when the
throat opening exceeds _____ the original throat opening. - Precise
Answer ✔✔5%
On a crawler crane ground bearing pressure is greatest where? - Precise
Answer ✔✔Over the corner
During disassembly of a long boom, the pendant lines are connected at
the maximum cantilever point and the boom is slightly lifted off the
ground, which boom connection pins are to be removed next? - Precise
Answer ✔✔The bottom pins ahead of the cantilever point

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