MASS Load Charts and Capacity 5

Question 1

A load moment indicator (LMI) primarily helps the operator by:

Accepted Answer

Warning when the load approaches or exceeds the rated capacity for the current configuration

Answer

The LMI monitors load, radius, and angle to alert the operator before rated capacity is exceeded.

Question 2

An LMI is a useful aid but must never be relied on as a substitute for:

Accepted Answer

The operator's own load chart calculations and judgment

Answer

The operator remains responsible for verifying lifts against the load chart; the LMI only supplements that.

Question 3

Soft or unstable ground under an outrigger most directly threatens which type of capacity limit?

Accepted Answer

Stability-based (tipping) capacity

Answer

Settling ground reduces the effective stability base and can lead to tipping.

Question 4

Why are charts for lifting on rubber (tires) typically much lower than charts for lifting on outriggers?

Accepted Answer

Tires provide a smaller, less rigid stability base than fully deployed outriggers

Answer

Outriggers create a wider, firmer support base, allowing much higher rated capacities than tires.

Question 5

Wind acting on a large, sail-like load can effectively:

Accepted Answer

Increase the load radius and side forces, reducing safe capacity

Answer

Wind pushes the load out and adds side loading, which lowers the capacity you can safely use.

MASS Test Practice Test