On what basis is the weight of materials other than steel plate usually calculated?

The correct basis for calculating the weight of materials other than steel plate is weight per cubic foot. This method is commonly used because it takes into account the volume of the material as well as its density, providing a standard measurement for various materials.

In construction and rigging practices, understanding the weight of materials in terms of cubic foot is essential, as it allows for more accurate assessments when planning for lifting and transporting materials. This unit of measurement is particularly helpful because it aligns with the typical dimensions and quantities encountered in the field.

Furthermore, using cubic feet enables easier conversions and comparisons among different materials that may have varying densities yet occupy similar volumes. When riggers are assessing the load weight, they can apply this standard measure to ensure safety and efficiency in their operations.

Other methods, like weight per cubic inch or cubic yard, may be less practical in the context of rigging and material handling due to the larger metrics or smaller increments involved. Weight per square foot is often relevant for flat materials like steel plates but not commonly used for calculating the weight of bulk materials. Therefore, weight per cubic foot presents the most versatile and widely accepted approach in industrial applications.