Which factor is used to estimate the weight of the object being lifted?

• A. Measuring volume
• B. Estimating the weight of the object
• C. Checking manufacturer specs
• D. Estimating friction

Answer: (B)

In lift planning, the weight you plan for is determined by an estimation process rather than a direct measurement. You build this estimate from the information you can gather on site—dimensions to determine volume, knowledge of material density, and any data from manufacturer specs if available. The factor you rely on to drive rigging decisions is that weight estimate itself, because it sets how you size rigging, choose gear, and apply safety margins.

Measuring volume can help you calculate an estimate, but by itself it isn’t the weight—you still convert volume to weight using density. Checking manufacturer specs can provide an actual weight when available, which is useful, but the activity you’re performing in the field is forming an estimate to guide operations. Estimating friction relates to how forces resist movement and affects stability, not the weight of the object being lifted.