NCCCO LATTICE BOOM GENERAL KNOWLEDGE UPDATED
ACTUAL EXAM COMPLETE QUESTIONS WITH DETAILED VERIFIED
ANSWERS (100% CORRECT ANSWERS) /ALREADY GRADED A+
1. The lattice boom is designed to take winds of ✓ 2%
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?
2. The part of the load chart governed by stability ✓ A. 75%
is based on what percentage of capacity while
a crawler crane is working over the side
quadrant?
3. The most unstable working quadrant for a ✓ Side
crawler crane is the;
4. What type of capacity is listed on a crane load ✓ Static
chart?
5. If the manufacture of a particular crane does ✓ Don't make any pick and
not specifically permit pick and carry carry lifts
operations what procedure must be followed
during this operation?
, 6. What is the main purpose of a jib/extension? ✓ To extend reach higher
or up and over
7. When the number of layers of rope on a drum ✓ Decreases
increase the line pull___________.
8. When handling boom sections, the best place ✓ At the pin connections at
for slings to be attached is; the ends of the top
chords
9. Placing timber blocking under the tips of the ✓ Make the crane more
tracks on a crawler crane will; stable
10. What is the major effect of stopping suddenly ✓ Action may cause the
a rapid swing while operating long boom crane boom collapse
crane? and/or overturn the crane
11. According to B30.10 hooks shall be removed ✓ 5%
from service when the throat opening exceeds
_____ the original throat opening.
12. On a crawler crane ground bearing pressure is ✓ Over the corner
greatest where?
13. During disassembly of a long boom, the ✓ The bottom pins ahead
pendant lines are connected at the maximum of the cantilever point
cantilever point and the boom is slightly lifted
off the ground, which boom connection pins
are to be removed next?
14. Most crane manufactures require the load ✓ 20 mph
ACTUAL EXAM COMPLETE QUESTIONS WITH DETAILED VERIFIED
ANSWERS (100% CORRECT ANSWERS) /ALREADY GRADED A+
1. The lattice boom is designed to take winds of ✓ 2%
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?
2. The part of the load chart governed by stability ✓ A. 75%
is based on what percentage of capacity while
a crawler crane is working over the side
quadrant?
3. The most unstable working quadrant for a ✓ Side
crawler crane is the;
4. What type of capacity is listed on a crane load ✓ Static
chart?
5. If the manufacture of a particular crane does ✓ Don't make any pick and
not specifically permit pick and carry carry lifts
operations what procedure must be followed
during this operation?
, 6. What is the main purpose of a jib/extension? ✓ To extend reach higher
or up and over
7. When the number of layers of rope on a drum ✓ Decreases
increase the line pull___________.
8. When handling boom sections, the best place ✓ At the pin connections at
for slings to be attached is; the ends of the top
chords
9. Placing timber blocking under the tips of the ✓ Make the crane more
tracks on a crawler crane will; stable
10. What is the major effect of stopping suddenly ✓ Action may cause the
a rapid swing while operating long boom crane boom collapse
crane? and/or overturn the crane
11. According to B30.10 hooks shall be removed ✓ 5%
from service when the throat opening exceeds
_____ the original throat opening.
12. On a crawler crane ground bearing pressure is ✓ Over the corner
greatest where?
13. During disassembly of a long boom, the ✓ The bottom pins ahead
pendant lines are connected at the maximum of the cantilever point
cantilever point and the boom is slightly lifted
off the ground, which boom connection pins
are to be removed next?
14. Most crane manufactures require the load ✓ 20 mph
