QUESTIONS & ANSWERS | CRANE & LIFTING OPERATIONS
CERTIFICATION PREP | UPDATED VERSION
1) WHAT IS MEANT BY THE TERM "TWO BLOCKING
CORRECT ANS: THE LOAD BLOCK CONTACTS THE BOOM POINT SHEAVES.
2) LIFTING 20,000LBS, WITH A 2-LEG BRIDLE SLING AT A 30 HORIZONTAL SLING ANGLE, WHAT IS
FORCE APPLIED TO EACH LEG?
CORRECT ANS: 20,000
3) IN MULTIPLE CRANE LIFTS USING AN EQUALIZER BEAM, THE WEIGHT OF THE BEAM SHOULD
BE CONSIDERED:
CORRECT ANS: PART OF THE LOAD WEIGHT
4) WHAT IS REQUIRED IF THERE IS A DEVIATION IN THE LIFT PLAN?
CORRECT ANS: A NEW LIFT PLAN
5) ON LEVEL GROUND USING SKIDS AND ROLLERS, WHAT PERCENT OF THE WEIGHT OF THE
LOAD SHOULD YIELD THE REQUIRED LINE PULL AS A GENERAL RULE OF THUMB?
CORRECT ANS: 5%
, 6) ALL OF THE FOLLOWING ARE RESULTS OF UNBALANCED REEVING OF THE HOOK BLOCK
EXCEPT:
CORRECT ANS: WEAR ON THE HOOK
7) BEFORE A SPREADER BAR OR BEAMS CAN BE USED THEY MUST HAVE BEEN:
CORRECT ANS: TESTED AND APPROVED
8) WHEN MATERIALS ARE BEING HOISTED TO AN UPPER LEVEL, A TAG LINE IS USED TO:
CORRECT ANS: HELP CONTROL THE LOAD
9) TWO CRANES ARE LIFTING 100 TONS . IF CRANE A HAS 40 % OF THE LOAD , HOW MUCH
WEIGHT WILL CRANE B HAVE ON ITS HOOK?
CORRECT ANS: 120,000 IBS.
10) TO CONFIRM THE RATED CAPACITY OF A SPECIFIC SLING, CONSULT THE MANUFACTURER'S:
CORRECT ANS: SLING TAG
11) OSHA REGULATIONS REQUIRE HOOK REPLACEMENT IF THE OPENING EXCEEDS WHAT
PERCENTAGE OF ITS ORIGINAL THROAT OPENING?
CORRECT ANS: 15%