Share 4 - Introduction to Basic Rigging
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The maximum load weight that a sling is designed to carry is the _____. a. top weight b. carry weight c. rated capacity d. load capacity
rated capacity
Most alloy steel chain slings can be used in temperatures up to _____. a. 200°F (93°C) b. 300°F (149°C) c. 400°F (204°C) d. 500°F (260°C)
500°F (260°C)
When a tattle-tail has been pulled into the jacket of a synthetic sling, the sling most likely has been _____. a. chemically damaged b. overheated c. overloaded d. crushed
overloaded
If a wire rope sling appears to be damaged, the decision to keep it in service must be made by a _____. a. site supervisor b. district manager c. competent person d. crane operator
competent person
Because of the need for increased toughness, shackles for most overhead lifting are made from _____. a. cast steel b. forged steel c. drop iron d. tempered aluminum
forged steel
Which style of hook is designed to be used on alloy steel chain slings? a. Grab hook b. Eye hook c. Sliding hook d. Short hook
Grab hook
To lift heavy loads, all chain hoists use a(n) _____. a. sprocket set b. anchorage slide c. gear system d. hook retainer
gear system
A type of hand-operated winching device that should never be used for vertical overhead lifting is a _____. a. chain hoist b. come-along c. block and tackle d. ratchet lever hoist
come-along
Two choker hitches are recommended when lifting a load longer than _____. a. 6 feet (≈2 m) b. 8 feet (≈2.5 m) c. 10 feet (≈3 m) d. 12 feet (≈3.5 m)
12 feet (≈3.5 m)
If an emergency occurs during a rigging operation, who is allowed to give the emergency stop hand signal? a. Only another crane operator in the vicinity. b. Only a designated signal person. c. Only a qualified rigger who has completed signa
Anyone on the ground who is in site of the crane operator.
