Which of the following is an example of a live load?

A live load refers to the weight that is not permanent and can change over time, meaning it is variable as it can fluctuate based on usage or occupancy. The weight of furniture in a room fits this definition perfectly because it can be rearranged, added to, or removed altogether, causing the load on the structure to change.

In contrast, the wood used in framing, the roof structure itself, and the concrete foundation are all examples of dead loads. Dead loads are static and permanent; they are the weight of the structural elements that do not change once they are installed. Therefore, these options do not qualify as live loads since they do not vary with occupancy or usage of the space.