Chain Slings Flashcards
1
Q
Grade 7 or 70 chain is used to transport loads and not for ___
A
Overhead lifting
2
Q
Rate these chain grades from strong to strongest
8/80
10/100
120
A
8/80 strong
10/100 stronger
120 strongest
3
Q
What is the design factor of a chain sling?
A
4:1
4
Q
What are types of chain damage?
A
Wear
Bends
Twists
Stretch
5
Q
How much is a chain designed to stretch before breaking?
A
15% most stretch occurs after 90% of breaking strength is applied
6
Q
What is the stretch tolerance of a chain?
A
5% of its original length
7
Q
How much of the original chain diameter can be removed before it needs to be taken out of service?
A
10%
8
Q
What style of chain link is acceptable for overhead lifting?
A
Hammerlok must be grade 8 or 10
But is not for splicing or repairs
