FREE MASS Test Load Charts and Capacity Questions and Answers

Question 1

An operator's load chart indicates a gross capacity of 30,000 lbs for a specific lift.
The rigging includes a 750 lb hook block, 450 lbs of slings and shackles, and a 1,200 lb spreader bar.
What is the maximum weight of the load (net capacity) that can be safely lifted?

Accepted Answer

27,600 lbs

Answer

30,000 lbs

Answer

29,250 lbs

Answer

28,800 lbs

Question 2

On a hydraulic crane's load chart, capacities listed above a bold line or in a shaded area indicate that the lifting limit is based on which factor?

Accepted Answer

The structural strength of the crane's components.

Answer

The stability of the crane against tipping.

Answer

The hydraulic system's maximum pressure.

Answer

The capacity when lifting over the rear only.

Question 3

Which of the following is NOT a required deduction from the gross capacity found on a load chart to determine the net lifting capacity?

Accepted Answer

The weight of the crane's counterweight.

Answer

The weight of the hook block.

Answer

The weight of slings and shackles.

Answer

The effective weight of a stowed jib on the main boom.

Question 4

A crane operator is told to set up for a lift on a surface with a 3-degree side slope. According to standard industry practice and manufacturers' requirements, how does this affect the validity of the load chart?

Accepted Answer

The load chart is void because it is predicated on the crane being perfectly level.

Answer

The capacity is reduced by 10%, but the lift can proceed.

Answer

The load chart values are still valid as long as outriggers are fully extended.

Answer

The operator must use the 'on-rubber' chart instead of the 'on-outriggers' chart.

Question 5

When reading a crane's load chart, the term "Gross Capacity" or "Rated Capacity" refers to the total weight that can be lifted at a specific radius and includes which of the following?

Accepted Answer

The weight of the object, all rigging, and the hook block.

Answer

Only the weight of the object being lifted.

Answer

The weight of the object plus a 15% safety factor.

Answer

The maximum load allowed during high-wind conditions.

Question 6

An operator plans a lift calculated to be 85% of the crane's rated capacity. However, the wind speed is forecast to be 25 mph. What is the correct course of action?

Accepted Answer

Halt the lift and consult the manufacturer's guidelines for wind speed limitations.

Answer

Proceed with the lift as planned since it is within the rated capacity.

Answer

Increase the swing speed to counteract the wind's effect.

Answer

Add 500 lbs to the load calculation to account for wind pressure.

An operator's load chart indicates a gross capacity of 30,000 lbs for a specific lift.The rigging includes a 750 lb hook block, 450 lbs of slings and shackles, and a 1,200 lb spreader bar.What is the maximum weight of the load (net capacity) that can be safely lifted?

An operator's load chart indicates a gross capacity of 30,000 lbs for a specific lift.
The rigging includes a 750 lb hook block, 450 lbs of slings and shackles, and a 1,200 lb spreader bar.
What is the maximum weight of the load (net capacity) that can be safely lifted?