This essay has a total of 544 words and 3 pages.


The definition of a truss is any of various structural frames based on the geometric rigidity of the triangle and composed of straight members subject only to longitudinal compression, tension, or both: functions as a beam or cantilever to support bridges, roofs, etc. Trusses are the most commonly used structural device used in architecture today. Trusses are used in almost every thing they are in your attic, barns, buildings, and bridges. A truss is used in architecture and engineering, it is a supporting structure made of beams, girders, or rods usually made of steel or wood. A truss usually takes the form of a triangle or combination of triangles, this design is capable of carrying large amounts of weight. Trusses are used for large spans and heavy loads, especially in bridges and roofs. Their open construction is lighter than a beam structured platform but is just as strong. The parts of a truss are the tie-beams, posts, rafters, and struts; the distance over which the truss extends is called the span. A truss is formed by connecting the ends of straight pieces of metal or wood to form a series of triangles lying in a single plane. A truss is based on the fact that a triangle is a configuration that cannot collapse or change its shape unless the length of one of the sides is changed. The two most commonly used truss designs are the Howe and Warren trusses. In 1806 the first patented bridge system, the Burr arch truss was used in the US. The Town truss was invented in 1820, in 1840 the Howe truss was invented, and

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