[RIGGER’S CORNER] RIGGING JEOPARDY CHALLENGE


BY: DANNY BISHOP CORPORATE DIRECTOR OF VALUE ADDED TRAINING THE CROSBY GROUP, LLC


Below are a few rigging questions to test your rigging knowledge. ASME B30.9 and B30.26 states that users of slings and rigging hardware must have training. Do the riggers in your employment have the necessary rigging knowledge to answer these basic rigging questions? Good luck and rig safe!


CENTER OF GRAVITY OFFSET 1) T e load on sling # 2 is: a. 5000 lbs b. 2000 lbs c. 8000 lbs


Sling 1 10,000 lbs D D1 = 8 ft D2 = 2 ft


THE RIGGING TRIANGLE 2) T e horizontal sling angle is at least 60 degrees if: a. a is equal or greater than b b. b is greater than a c. a plus b = c


LOAD WEIGHT 5) T e weight of the concrete slab is __________ based on 150 lbs./ft: a. 150 LBS b. 1500 LBS c. 3000 LBS


4) T e load angle multiplier can be determined by: a. l/h b. h/l c. l/d


Sling 2 L H


B


3) As the horizontal sling angle becomes smaller, the: a. Total load on the top fi tting is increased b. T e tension in each sling leg is increased c. T e crushing force exerted on the load is increased d. Answer is both b & c e. All of the above


1' 2'


5'


Answer Key 1. c | 2. a | 3. d | 4. a | 5. b 60° 60° 30° 30°


This is just a sample of the type of knowledge that can be obtained when you attend a Crosby Rigging Seminar. See Crosby’s website for more information: www. thecrosbygroup.com/training


80


MAY-JUNE 2014


WIRE ROPE EXCHANGE


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