A heaped bucket capacity is what percentage of the capacity of a struck bucket?

The heaped bucket capacity refers to the maximum volume of material that a bucket can hold when it is loaded above the rim, creating a "heap" or pile. In contrast, the struck bucket capacity is the volume of material that the bucket can hold when it is filled level with the top edge of the bucket.

Typically, heaped bucket capacities increase the volume compared to struck capacities because material can form a pile over the edges. In various industry standards and practices, it is generally accepted that a heaped bucket capacity is approximately 130% of the struck bucket capacity. This percentage accounts for the additional volume of material that can be heaped above the standard filling line.

Thus, 130% represents a common factor used in calculations for estimating material volumes and ensuring that equipment usage is efficient while avoiding overloading. Knowing these percentages helps contractors make informed decisions regarding the amount of material they can expect to transport with their equipment, which is crucial for project planning and execution.