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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]
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 Joseph Slanser of La Rue, Ohio, shows (several other patents followed). Sometimes they were also called a joist frame, rib frame and trussed frame barns.
What are termed round barns include historic barns having true circular designs and also octagonal or other polygonal designs that approximate a circle. In the United States, in a first era of round barn construction, from 1850 to 1900, numerous octagonal barns were built. In a second era, from 1889 to 1936, numerous true circular barns were built.
By using poles embedded in the ground, along with steel roofing and siding, the amount of framing, siding, and foundation material needed to construct a barn was drastically reduced. The columns were literally telephone poles – hence the term 'pole barn'. After World War 2, 'poles' were replaced by solid sawn posts, usually 4×6 or 6×6.
In architecture, intercolumniation is the proportional spacing between columns in a colonnade, often expressed as a multiple of the column diameter as measured at the bottom of the shaft. [1] In Classical , Renaissance , and Baroque architecture , intercolumniation was determined by a system described by the first-century BC Roman architect ...
A steel column is extended by welding or bolting splice plates on the flanges and webs or walls of the columns to provide a few inches or feet of load transfer from the upper to the lower column section. A timber column is usually extended by the use of a steel tube or wrapped-around sheet-metal plate bolted onto the two connecting timber sections.