Nonbuilding structure
A nonbuilding structure, also referred to simply as a structure, refers to any body or system of connected parts used to support a load that was not designed for continuous human occupancy. The term is used by architects, structural engineers, and mechanical engineers to distinctly identify built structures that are not buildings.
Examples
- Aerial lift pylon
- Aqueduct (water supply)
- Avalanche dam
- Barriers
- Blast furnaces
- Boat lifts
- Brick kilns
- Bridges and bridge-like structures (aqueducts, overpasses, trestles, viaducts, etc.)
- Bus stops
- Canal
- Carport
- Chimneys and flue-gas stacks
- Coke ovens
- Communications tower
- Covered bridges
- Cranes
- Dams
- Dock (maritime)
- Dolphin (structure)
- Electricity grid
- Ferris wheels
- Ferry slip
- Flume
- Fortification
- Fractionating towers
- Gates
- Handrails
- Hayrack
- Hay barrack
- Headframe
- Infrastructure
- Lattice tower
- Marina
- Monuments
- Oil depot
- Offshore oil platforms (except for the production and housing facilities)
- Piers
- Radio masts and towers
- Railroads
- Ramada (shelter)
- Roads
- Roller coasters
- Retaining walls
- Silos
- Snow shed
- Storage tanks
- Street lights
- Street signs
- Swimming pools
- Structures designed to support, contain or convey liquid or gaseous matter, including
- Cooling towers
- Distillation equipment and structural supports at chemical and petrochemical plants and oil refineries
- Tank farm
- Towers of some types
- Tramways and Aerial tramways
- Transmission towers
- Triumphal arch
- Tunnels
- Underwater habitat
- Watercraft
- Water towers
- Wharves
Exceptions

Dulles Airport control tower
Some structures that are occupied periodically and would otherwise be considered nonbuilding structures are categorized as "buildings" for life and fire safety purposes: