FREE NCCCO Knowledge Questions and Answers

Which accessible section of a working crane must to be blocked off all the time, according to OSHA?

From the top of the reel to the top of the drum, the rope extends.

They depend on the crane's steadiness.

The revolving superstructure's back swing radius

Depending on which next boom length is shorter or longer and has a lower capacity

Correct! Wrong!

What is the boom hoisting sheaves' minimum pitch diameter?

at least 20 times the diameter of the rope

at least 16 times the diameter of the rope

at least 15 times the diameter of the rope

at least 18 times the diameter of the rope

Correct! Wrong!

When ought one to employ a tagline?

From the top of the reel to the top of the drum, the rope extends.

The separation between the load's center of gravity and the crane's center of rotation

When a load's rotation could be hazardous 1910.180(h) & 1926.1417(w)(3)(xvi) If it becomes essential, a tag or restraint line must be employed to stop the weight from rotating in a dangerous way.

Crane capacity in the gray regions above the bold lines are determined by hydraulic or structural constraints. Based on stability ratings, the crane capacity are below the bold lines.

Correct! Wrong!

In the context of load capacity charts, what does "jib angle to ground" mean?

The front

main boom angle less the offset of the jib

Divide the hoist lines.

only when loads are freely suspended

Correct! Wrong!

What happens if you place timber blocking beneath a crawler crane's track tips?

He or she plans to proceed.

Divide the hoist lines.

increases the stability of the crane

lowers the crane's capacity

Correct! Wrong!

What is the load block sheaves' minimum pitch diameter?

at least 15 times the diameter of the rope

at least 20 times the diameter of the rope

at least 18 times the diameter of the rope

at least 16 times the diameter of the rope

Correct! Wrong!

What is the minimal distance under $50,000 that can be kept between a crane and electrical lines?

6 ft.

15 ft.

10 ft.

20 ft.

Correct! Wrong!

When operating at ground floor level close to a cellar wall, where should the outrigger pads or tracks of the crane be positioned?

At least as far back as the wall's subsurface depth

The revolving superstructure's back swing radius

Just far enough above the surface to release the crane weight off the tires

As long as it doesn't produce any obvious distortion that would compromise procedures that are safe

Correct! Wrong!

When can outrigger beams be covered with blocking (cribbing)?

Never

Always

Infrequently

Sometimes

Correct! Wrong!

What is the rotation resistant rope's safety factor for lifting people?

5:1

28:2

10:1

20:1

Correct! Wrong!

When lifting with crawler cranes, which boom position would result in the most ground pressure?

Beyond the corner

Beyond the edge

Above the front

Above the back

Correct! Wrong!

FREE NCCCO Knowledge Questions and Answers

Which accessible section of a working crane must to be blocked off all the time, according to OSHA?

What is the boom hoisting sheaves' minimum pitch diameter?

When ought one to employ a tagline?

In the context of load capacity charts, what does "jib angle to ground" mean?

What happens if you place timber blocking beneath a crawler crane's track tips?

What is the load block sheaves' minimum pitch diameter?

What is the minimal distance under $50,000 that can be kept between a crane and electrical lines?

When operating at ground floor level close to a cellar wall, where should the outrigger pads or tracks of the crane be positioned?

When can outrigger beams be covered with blocking (cribbing)?

What is the rotation resistant rope's safety factor for lifting people?

When lifting with crawler cranes, which boom position would result in the most ground pressure?

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