ANSI E1.21 - 2013: Temporary Structures Used for Technical Production of Outdoors Entertainment Events Flashcards
allowable load
The maximum load that can be safely supported by a component or temporary structure.
base plate
The component or part of the temporary structure that spreads low to the supporting substrate.
buckling
Lateral displacement of a compression member from the original center line under axial load, usually sudden.
competent person
A person who is capable of identifying existing and predictable hazards in the workplace and who is authorized to take prompt corrective measures to eliminate them.
Dead load
The self weight of the temporary structure.
Effective wind area
The surface area exposed to wind.
Life load
The variable gravity load or weight supported by the temporary structure
lock-off
Means of supporting the allowable load of a temporary structure and a fixed position, independent of the lifting device(s).
payload
The equipment load or weight supported by the temporary structure.
ponding
Accumulation of water that does not drain off a surface.
superimposed load
Loads associated with wind, rain, snow, ice, seismic etc.
temporary
A period of time that is less than six consecutive weeks in duration.
tower
One or more components assembled vertically to support load.
User
The entity ultimately responsible for the structure at a given point in the structures temporary life cycle. Note that this entity could be different during different phases ranging from assembly, erection, use, and dismantling. This entity must be clearly identified in accordance with section 5 of the ANSI document for each given phase of operation.
