Which best defines a live load?

Which best defines a live load?

• A. The weight of the building itself
• B. Any loads to a building other than the dead loads
• C. The weight of permanent equipment
• D. Wind and seismic loads

Answer: (B)

Live loads are the loads in a building that come from use and occupancy and can change over time. They’re not part of the structure’s own weight, which is the dead load, and they include things like people, furniture, movable equipment, and other items that can be relocated or rearranged. Because they vary with how the space is used, they must be considered in design to ensure safety and performance. Environmental forces like wind or earthquakes are separate external loads, not typically classified as live loads. The weight of permanent equipment and the building’s own mass are fixed and do not represent live loads. That's why describing live loads as any loads to a building other than the dead loads is the best fit.

Live loads are the loads in a building that come from use and occupancy and can change over time. They’re not part of the structure’s own weight, which is the dead load, and they include things like people, furniture, movable equipment, and other items that can be relocated or rearranged. Because they vary with how the space is used, they must be considered in design to ensure safety and performance. Environmental forces like wind or earthquakes are separate external loads, not typically classified as live loads. The weight of permanent equipment and the building’s own mass are fixed and do not represent live loads. That's why describing live loads as any loads to a building other than the dead loads is the best fit.