The measurement in distance between columns or posts along the length of a building.
A horizontal structural member which acts as support in a building, subject to bending stresses.
A supporting wall to a load, usually a floor or roof of a building.
A temporary or permanent structural material which holds another member in place.
A self-supporting, horizontal extension from a building, in which no external bracing is used, such as a step, balcony or canopy.
The horizontal member of the roof which ties the walls of a structure together, to support the ceiling of a room.
An inclined or horizontal member of a truss, connected by a web composed of compression and tension members.
The material used for the exterior building covering.
A vertical structural element for used for upright support that transmits the weight of the structure above to other structural elements below.
Note: In pole barns, posts (columns) are pressure treated or laminated wood. In timber-frame barns, rough cut and untreated wood is usually used.