NCCCO Lattice Boom General Knowledge |
100% Correct Answers | Verified | Latest
2024 Version
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? - ✔✔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? - ✔✔A. 75%
The most unstable working quadrant for a crawler crane is the; - ✔✔Side
What type of capacity is listed on a crane load chart? - ✔✔Static
If the manufacture of a particular crane does not specifically permit pick and carry operations what
procedure must be followed during this operation? - ✔✔Don't make any pick and carry lifts
What is the main purpose of a jib/extension? - ✔✔To extend reach higher or up and over
When the number of layers of rope on a drum increase the line pull___________. - ✔✔Decreases
When handling boom sections, the best place for slings to be attached is; - ✔✔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; - ✔✔Make the crane more
stable
What is the major effect of stopping suddenly a rapid swing while operating long boom crane? -
✔✔Action may cause the crane boom collapse and/or overturn the crane
