CHST Concrete, Masonry, and Formwork Safety 4

Question 1

Lifting inserts embedded in tilt-up precast panels must be capable of supporting at least how much of the maximum intended load?

Accepted Answer

Two times

Answer

1926.704(b) requires tilt-up lifting inserts to support at least two times the maximum intended load applied or transmitted.

Question 2

Lifting inserts for precast concrete members other than tilt-up panels must support at least how many times the maximum intended load?

Accepted Answer

Four

Answer

1926.704(c) requires a safety factor of four for lifting inserts in non-tilt-up precast members.

Question 3

Lifting hardware used with precast concrete must be capable of supporting at least how many times the maximum intended load?

Accepted Answer

Five

Answer

1926.704(d) requires lifting hardware to support at least five times the maximum intended load.

Question 4

In lift-slab operations, what is the maximum allowed variation in lift between jacks?

Accepted Answer

1/2 inch

Answer

1926.705(g) requires jacking to be synchronized so that the variation between jacks does not exceed 1/2 inch.

Question 5

Who must design lift-slab operations per OSHA 1926.705?

Accepted Answer

A registered professional engineer experienced in lift-slab construction

Answer

Lift-slab operations must be designed and planned by a registered PE with lift-slab experience.

CHST - Construction Health and Safety Technician Practice Test