quiz week 4 two

Question 1

Most cited violations?

Answer 1

1. Failure to protect employees from impalement – rebar not capped or covered.
2. Failure to establish a limited access zone (LAZ) to limit the number of workers in the danger zone where a masonry wall is under construction.
3. Failure to brace unsupported section of masonry wall over 8 feet in height.
4. Failure to have drawings or plans at the jobsite to indicate jack layout and formwork placement.

Question 2

Precautions for post tensioning and overhead work?

Answer 2

1. Access shale be limited behind jack to those performing the work.
2. Signs and barricades are required to limit access.

Question 3

Protections from wall collapse and required height for wall bracing (type of suitable wall brae and minimum load resist)

Answer 3

1. Until the wall has gained sufficient strength that overturning (collapse) is no longer a hazard, keep employees out of the area where the wall is being constructed unless they are actually engaged in constructing the wall.
2. marking off an area with tape, rope, or chain or any other material that will indicate to employees that they are not to enter the zone (area) that has been marked.
3. The zone should be equal to the length of the wall under construction and extend out a distance equal to the height of the wall to be constructed plus 4 feet.

Question 4

Conditions for shoring removal in cast-tin-place concrete.

Answer 4

• 1. Damaged shoring is not to be used. Shoring that is found to be damaged must be immediately reinforced.
• 2.The sills for shoring must be sound, ridged, and capable of carry the maximum intended load.