Answers | Heavy Equipment & Crane Rigging Certification Prep |
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1) What Is Meant By The Term "Two Blocking
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?
ANS: 20,000
3) In Multiple Crane Lifts Using An Equalizer Beam, The Weight Of The Beam Should Be
Considered:
ANS: Part Of The Load Weight
4) What Is Required If There Is A Deviation In The Lift Plan?
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?
ANS: 5%
6) All Of The Following Are Results Of Unbalanced Reeving Of The Hook Block Except:
, ANS: Wear On The Hook
7) Before A Spreader Bar Or Beams Can Be Used They Must Have Been:
ANS: Tested And Approved
8) When Materials Are Being Hoisted To An Upper Level, A Tag Line Is Used To:
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?
ANS: 120,000 Ibs.
10) To Confirm The Rated Capacity Of A Specific Sling, Consult The Manufacturer's:
ANS: Sling Tag
11) Osha Regulations Require Hook Replacement If The Opening Exceeds What Percentage Of
Its Original Throat Opening?
ANS: 15%
12) At What Percentage Of Increase In Length Should A Chain Sling Be Removed From Service?
ANS: 5%