INTERMEDIATE RIGGING EXAM
QUESTIONS AND ANSWERS
What is effective weight - ANSWER -Everything below the boom tip
Who must sign off on new signals - ANSWER -The operator, signal person, lift director
What is the best tag line to use for work near powerlines - ANSWER -Polypropylene
What does it mean when you have localized narrowing of outside diameter of wire rope
- ANSWER -Broken core
What is RRL - ANSWER -Right regular lay
What is EIPS - ANSWER -Extra improved plow steel
What is IWRC - ANSWER -Independent wire rope core
What percentage of diameter can wire rope not go below - ANSWER -95%
Gross capacity is the same as - ANSWER -Allowable line pull
Gross capacity- deductions equals - ANSWER -Net capacity
What is the capacity for crane on outriggers, tire, track - ANSWER -Outriggers= 85%
Tires=75%
Tracks=75%
What does everything above the bold line on a load chat mean - ANSWER -More likely
to break
What does everything below the bold line on a load chat mean - ANSWER -More likely
to tip over
What is the distance from an uncompacted soil - ANSWER -1.5 ×depth
What is the distance from compacted soil - ANSWER -1×depth
How far past tracks must mats be - ANSWER -2'
Name 2 methods for cribbing - ANSWER -1) area of float ×3= blocking area
2) crane capacity ÷5= blocking area
How level must cranes be - ANSWER -1% or .57°
QUESTIONS AND ANSWERS
What is effective weight - ANSWER -Everything below the boom tip
Who must sign off on new signals - ANSWER -The operator, signal person, lift director
What is the best tag line to use for work near powerlines - ANSWER -Polypropylene
What does it mean when you have localized narrowing of outside diameter of wire rope
- ANSWER -Broken core
What is RRL - ANSWER -Right regular lay
What is EIPS - ANSWER -Extra improved plow steel
What is IWRC - ANSWER -Independent wire rope core
What percentage of diameter can wire rope not go below - ANSWER -95%
Gross capacity is the same as - ANSWER -Allowable line pull
Gross capacity- deductions equals - ANSWER -Net capacity
What is the capacity for crane on outriggers, tire, track - ANSWER -Outriggers= 85%
Tires=75%
Tracks=75%
What does everything above the bold line on a load chat mean - ANSWER -More likely
to break
What does everything below the bold line on a load chat mean - ANSWER -More likely
to tip over
What is the distance from an uncompacted soil - ANSWER -1.5 ×depth
What is the distance from compacted soil - ANSWER -1×depth
How far past tracks must mats be - ANSWER -2'
Name 2 methods for cribbing - ANSWER -1) area of float ×3= blocking area
2) crane capacity ÷5= blocking area
How level must cranes be - ANSWER -1% or .57°
