What is a load moment indicator?

A load moment indicator is a crucial safety device in tower cranes that specifically monitors the load being lifted and its effect on the crane's stability. This device calculates the load moment, which is the product of the load and the distance from the center of the crane (usually the base) to the load's center of gravity. By continuously measuring these factors, it helps ensure that the crane is not overloaded, which could lead to tipping or other unsafe conditions.

When the load moment indicator detects that the load is approaching unsafe limits, it typically provides alerts or can even limit crane operations until safe conditions can be established. This mechanism is vital in maintaining operational safety, especially when working with heavy materials or in challenging environments.

The other options refer to different functionalities that are not the primary role of a load moment indicator. Monitoring fuel consumption, measuring speed, or assessing ground conditions are all important aspects of crane operation but are not directly related to preventing tipping, which is the key function of the load moment indicator.