NCCER Crane Lift Planning, Critical Lifts & Personnel Hoisting

Question 1

When hoisting personnel on a crane-suspended platform, the total load cannot exceed what percentage of the crane's rated capacity at that radius and configuration?

Accepted Answer

50%

Answer

OSHA 1926.1431 limits the total weight of the loaded personnel platform and rigging to 50% of the crane's rated capacity for the radius and configuration used.

Question 2

What must be done before hoisting personnel on a crane-suspended platform at each new location?

Accepted Answer

A trial lift with the unoccupied platform loaded to at least the anticipated lift weight

Answer

OSHA requires a trial lift with the unoccupied platform loaded to at least the anticipated weight, from ground level to each location the platform will be hoisted to. It must be repeated whenever the crane is moved or set up again.

Question 3

Which of these lifts is MOST commonly classified as a critical lift that needs a written lift plan?

Accepted Answer

A tandem lift with two cranes

Answer

Multi-crane (tandem) lifts are almost always critical lifts, and OSHA 1926.1432 requires a plan from a qualified or competent person. Lifts near chart capacity, over occupied areas and personnel lifts are also typical critical-lift triggers.

Question 4

Which information is LEAST needed when preparing a lift plan?

Accepted Answer

The crane's paint color

Answer

A lift plan needs gross load weight (load plus rigging and hook block), radius, boom length and angle, ground conditions, obstructions and power lines. Paint color has nothing to do with lift safety.

Question 5

When calculating gross load for a lift, which items must be added to the weight of the object being lifted?

Accepted Answer

The hook block, slings, shackles, spreader bars and any other lifting attachments

Answer

Everything below the boom tip counts as load. That includes the hook block or overhaul ball, slings, hardware and below-the-hook devices, and on many cranes stowed or erected jibs and hoist line as the manufacturer specifies.

(NCCER Crane) National Center for Construction Education and Research Crane Certification Practice Test

(NCCER Crane) National Center for Construction Education and Research Crane Certification Practice Test

NCCER Crane Lift Planning, Critical Lifts & Personnel Hoisting