NCCCO Lattice Boom General Knowledge / Complete
Study Guide Exam Review / Newest 2025 Actual
Exam 50+ Questions and Correct Answers (Verified
Answers)
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? -
(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? - (ANSWER)A.
75%
The most unstable working quadrant for a crawler crane is the; - (ANSWER)Side
What type of capacity is listed on a crane load chart? - (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? -
(ANSWER)Don't make any pick and carry lifts
What is the main purpose of a jib/extension? - (ANSWER)To extend reach higher
or up and over
When the number of layers of rope on a drum increase the line pull___________.
- (ANSWER)Decreases
, When handling boom sections, the best place for slings to be attached is; -
(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; -
(ANSWER)Make the crane more stable
What is the major effect of stopping suddenly a rapid swing while operating long
boom crane? - (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. - (ANSWER)5%
On a crawler crane ground bearing pressure is greatest where? - (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? - (ANSWER)The bottom pins
ahead of the cantilever point
Most crane manufactures require the load chart capacities must be reduced when
wind speed reaches; - (ANSWER)20 mph
Study Guide Exam Review / Newest 2025 Actual
Exam 50+ Questions and Correct Answers (Verified
Answers)
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? -
(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? - (ANSWER)A.
75%
The most unstable working quadrant for a crawler crane is the; - (ANSWER)Side
What type of capacity is listed on a crane load chart? - (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? -
(ANSWER)Don't make any pick and carry lifts
What is the main purpose of a jib/extension? - (ANSWER)To extend reach higher
or up and over
When the number of layers of rope on a drum increase the line pull___________.
- (ANSWER)Decreases
, When handling boom sections, the best place for slings to be attached is; -
(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; -
(ANSWER)Make the crane more stable
What is the major effect of stopping suddenly a rapid swing while operating long
boom crane? - (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. - (ANSWER)5%
On a crawler crane ground bearing pressure is greatest where? - (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? - (ANSWER)The bottom pins
ahead of the cantilever point
Most crane manufactures require the load chart capacities must be reduced when
wind speed reaches; - (ANSWER)20 mph
