NLC Rigging UPDATED ACTUAL QUESTIONS AND CORRECT
Answers
Sling: Vertical vs Choke The choke is approximately half as strong as the vertical sling
Sling: Vertical vs Basket The basket is approximately twice as strong as the vertical sling
, Vertical Sling Configuration Normally suggests more than one sling is involved.
Referred to as bridle type configuration.
Example: 2 slings are rigged from the lifting line. 1 sling goes to each side of a
transformer so the transformer will lift evenly. Weight is distributed between 2
slings
Choker Sling Configuration Allows the sling to bite down into place, minimizes slip or travel.
Weakens strength of the sling.
Often used to set poles.
Should not be used when basket configuration is possible
Basket Sling Configuration Strongest configuration. Splits weight evenly between each eye.
Most commonly used when pole is supported by a boom during framing.
Pole can easily be turned if needed.
Sling Name Tag Info Working load limit of the sling in choker, vertical, and basket configurations
Manufacturer's code number that denotes: type, ply. the duty rating, and the width
Missing/Illegible Name Tag on Sling Must be immediately removed from service
6 Types of Slings Triangle choker
Triangle to triangle
Flat eye and eye
Twisted eye and eye
Endless
Reversed eye
Triangle Choker Have triangular metal eyes in each end of the sling
Different size eyes, 1 allows the other to pass through it
Uses: vertical, choker, basket
Triangle to Triangle Have triangular metal eyes of the same size in each end
Uses: vertical and basket
Flat Eye and Eye Slings have eyes woven into each other
Common and inexpensive
Used: vertical, choker, basket
Twisted Eye and Eye Slings have tow eyes wives into each end
Eyes are twisted at right angles making them effective for chokers and baskets
Uses: vertical, choker, basket
Endless Continuous loop sling
Uses: vertical, choker, basket
Answers
Sling: Vertical vs Choke The choke is approximately half as strong as the vertical sling
Sling: Vertical vs Basket The basket is approximately twice as strong as the vertical sling
, Vertical Sling Configuration Normally suggests more than one sling is involved.
Referred to as bridle type configuration.
Example: 2 slings are rigged from the lifting line. 1 sling goes to each side of a
transformer so the transformer will lift evenly. Weight is distributed between 2
slings
Choker Sling Configuration Allows the sling to bite down into place, minimizes slip or travel.
Weakens strength of the sling.
Often used to set poles.
Should not be used when basket configuration is possible
Basket Sling Configuration Strongest configuration. Splits weight evenly between each eye.
Most commonly used when pole is supported by a boom during framing.
Pole can easily be turned if needed.
Sling Name Tag Info Working load limit of the sling in choker, vertical, and basket configurations
Manufacturer's code number that denotes: type, ply. the duty rating, and the width
Missing/Illegible Name Tag on Sling Must be immediately removed from service
6 Types of Slings Triangle choker
Triangle to triangle
Flat eye and eye
Twisted eye and eye
Endless
Reversed eye
Triangle Choker Have triangular metal eyes in each end of the sling
Different size eyes, 1 allows the other to pass through it
Uses: vertical, choker, basket
Triangle to Triangle Have triangular metal eyes of the same size in each end
Uses: vertical and basket
Flat Eye and Eye Slings have eyes woven into each other
Common and inexpensive
Used: vertical, choker, basket
Twisted Eye and Eye Slings have tow eyes wives into each end
Eyes are twisted at right angles making them effective for chokers and baskets
Uses: vertical, choker, basket
Endless Continuous loop sling
Uses: vertical, choker, basket
