Which type of load is considered static in a building?

A dead load is considered a static load in a building because it refers to the permanent, immovable weight of the structure and any fixed attachments. This includes the weight of the building's materials, such as walls, floors, and roofs, as well as any permanent furnishings or fixtures. Since dead loads do not change over time and are constantly applied to the structure, they are classified as static loads.

In contrast, live loads, which include movable objects like people, furniture, and vehicles, can change depending on occupancy and use, making them dynamic in nature. Fire load refers to the potential amount of fuel available in a building that could contribute to a fire, and while it can be significant for fire safety considerations, it does not directly pertain to the structural load classification. Lastly, impact loads involve sudden forces acting on a structure, such as those from vehicular collisions or falling objects, and are also dynamic and not considered static.