Critical load: The weight at which a structure will fail, or collapse.
Dead load: The weight of the structure itself.
Live load: The weight of everything supported by a structure except the structure’s own weight. For a building, this includes the people, furniture, computers, office supplies, telephones, and anything else inside or on it.
Structural integrity: The ability of a structure to support a designed load or weight without breaking, tearing, or collapsing.