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Pole building design was pioneered in the 1930s in the United States originally using utility poles for horse barns and agricultural buildings. The depressed value of agricultural products in the 1920s, and 1930s and the emergence of large, corporate farming in the 1930s, created a demand for larger, cheaper agricultural buildings. [2]
The design of most pole barns is simple. Poles make up the outer walls and support the roof system, usually pre-engineered wood trusses with a roof sheathing. Poles are usually spaced 8' apart, with the trusses bearing directly on the poles. Some variations in design call for truss carrying beams between the posts with trusses sitting on them.
Intermediate – A post in an exterior wall not at a corner. Chimney – An intermediate post receiving its name from being near a chimney. Interior – A general term for posts not in an exterior wall. Arcade – A post located between an aisle and nave. [10] Aisle – same as arcade post. [11] Corner – Any post at the corner of a building.
The tops of the posts are joined to a beam and the spaces between are filled in with natural materials called bousillage or pierrotage. Poteaux-sur-sol (posts on a sill) is a general term for any kind of framing on a sill. However, sometimes it specifically refers to "vertical log construction" like poteaux-en-terre placed on sills with the ...
Purlin plates are beams which support the mid-span of rafters and are supported by posts. By supporting the rafters they allow longer spans than the rafters alone could span, thus allowing a wider building. Purlin plates are very commonly found in large old barns in North America.
A type of trussed plank frame barn in Sweden is representative of some types in America, the lack of heavy timbers in the framing give it the name plank frame barn. Plank-framed barns [22] are different than a plank-framed house. Plank framed barns developed in the American Mid-West, such as the patente in 1876 (#185,690) by William Morris and ...