Load charts for cranes are based on which type of loads?

Load charts for cranes are predominantly based on static loads. This means that the weight and distribution of the load being lifted are considered to be unchanging during the lift. Static loads enable operators to determine safe lifting capacities and assess the crane's integrity when it is stationary, providing a reliable guideline for safe operations.

When referencing static loads, the focus is on the maximum weight that the crane can handle without risk, taking into account factors like the crane's configuration, the boom angle, and any adjustments needed for various environmental conditions. Understanding the specifications found in load charts is crucial for operators to ensure safety and to prevent overloading.

While dynamic loads (which refer to loads that change or move during a lift) and moving loads introduce additional complexities such as wind effects, momentum, and inertia, load charts remain strictly focused on the static condition for clarity and safety management. Similarly, dynamically stabilized and moving loads are more advanced concepts that are not the primary focus of typical load charts, reinforcing the importance of static load guidelines in crane operations.