MASS Load Charts and Capacity 2

Question 1

On a mobile crane load chart, what does the term 'gross capacity' represent?

Accepted Answer

The total rated lift before deducting the weight of rigging and load-handling devices

Answer

The weight of the crane itself

Answer

The net weight available for the customer's load only

Answer

The maximum counterweight allowed

Question 2

To find the net capacity for a lift, what must be subtracted from the gross capacity?

Accepted Answer

The weight of the hook block, rigging, and any load-handling devices

Answer

The boom weight

Answer

The outrigger pad weight

Answer

The fuel weight

Question 3

Which two factors are typically used together to locate a rated capacity on a load chart?

Accepted Answer

Load radius and boom length

Answer

Engine RPM and oil pressure

Answer

Wind speed and temperature

Answer

Tire pressure and axle weight

Question 4

As the load radius increases on a mobile crane, the rated capacity generally:

Accepted Answer

Decreases

Answer

Increases

Answer

Stays the same

Answer

Doubles

Question 5

What does a bold line or shaded area on a load chart commonly indicate?

Accepted Answer

The point where the limitation changes from structural strength to stability (tipping)

Answer

The maximum travel speed

Answer

The recommended idle setting

Answer

The location of the cab heater

Question 6

Capacities based on structural strength rather than stability are most often limited by what?

Accepted Answer

The strength of the boom and crane components

Answer

The amount of counterweight only

Answer

The wind direction

Answer

The operator's reach

Question 7

Why should you always use the load chart for the specific machine you are operating?

Accepted Answer

Capacities vary by model, configuration, and counterweight even on similar cranes

Answer

All cranes share one universal chart

Answer

Charts are only legal suggestions

Answer

The chart only applies to new cranes