What does the live load of a building refer to?

The live load of a building refers to the weight that is not permanently attached to the structure, which is primarily associated with temporary materials or loads. Examples of live loads include people, furniture, and movable equipment within the building. These loads can vary over time as they change with occupancy or the items being moved in and out of the space.

In contrast, the weight of permanent fixtures, the structural frame, and the foundation are categorized as dead loads, which contribute to the overall static weight of the building and remain constant over time. This distinction is crucial for understanding building design and safety considerations, especially in fire tactics and strategies, as live loads can affect how a structure behaves during emergencies.