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2. Pole building framing - Wikipedia

   en.wikipedia.org/wiki/Pole_building_framing

   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]

3. Functionally classified barn - Wikipedia

   en.wikipedia.org/wiki/Functionally_classified_barn

   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.

4. American historic carpentry - Wikipedia

   en.wikipedia.org/wiki/American_historic_carpentry

   A variation of a plank framed truss with metal plate connectors on a pole barn. Plank framed truss was the name for roof trusses made with planks rather than timber roof trusses. In the 20th century, it was typical for carpenters to make their own trusses by nailing planks together with wood plates at the joints.

5. Domestic roof construction - Wikipedia

   en.wikipedia.org/wiki/Domestic_roof_construction

   A truss roof with tongue and groove sheathing. The gap in the sheathing at the ridge is the space designed to allow natural ventilation. Pre-manufactured roof trusses come in a wide variety of styles. They are designed by the manufacturer for each specific building. Timber trusses also are built in a variety of styles using wood or metal joints.

6. Timber roof truss - Wikipedia

   en.wikipedia.org/wiki/Timber_roof_truss

   Two king post trusses linked to support a roof. Key:1: ridge beam, 2: purlins, 3: common rafters. This is an example of a "double roof" with principal rafters and common rafters. A timber roof truss is a structural framework of timbers designed to bridge the space above a room and to provide support for a roof.

7. Post (structural) - Wikipedia

   en.wikipedia.org/wiki/Post_(structural)

   Queen – 1) A pair of vertical posts in a roof system that are part of a truss, with a straining beam between and in tension holding up a tie beam or; 2) Two posts in a roof system not acting as a truss in the engineering sense and here in compression. [22] Also called a queen strut. Queen strut: 1)(U.K.)