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A Howe truss is a truss bridge consisting of chords, verticals, and diagonals whose vertical members are in tension and whose diagonal members are in compression. The Howe truss was invented by William Howe in 1840, and was widely used as a bridge in the mid to late 1800s.
The cross bracing of truss bridges has a special additional clearance requirement of 17.5 feet (5.3 m). Bridges: Bridges less than 200 feet (61 m) long should carry the full width of the roadway, including the paved shoulders. Longer bridges can reduce the width of both shoulders to 4 feet (1.2 m).
The bowstring truss bridge was patented in 1841 [13] by Squire Whipple. [14] ... [20] with the upper chords of parallel trusses supporting a roof that may be rolled back.
Roof truss. A planar truss lies in a single plane. [14] Planar trusses are typically used in parallel to form roofs and bridges. [16] The depth of a truss, or the height between the upper and lower chords, is what makes it an efficient structural form.
The Belfast truss is a cross between Town's lattice truss and the bowstring truss. It was developed in Ireland as a wide-span shallow rise roof truss for industrial structures. McTear & Co of Belfast, Ireland began fabricating these trusses in wood starting around 1866. By 1899, spans of 24 metres (79 ft) had been achieved, and in the 20th ...
The Braga Bridge is a continuous truss bridge. It was the fourth longest span of this type when it was completed in 1966. This list of continuous bridge spans ranks the world's continuous truss bridges in two listings: The first is ranked by the length of main span (the longest length of unsupported roadway) and the second by the total length of continuous truss spans.
The 1865 Annual Report of the President and Directors of the Louisville and Nashville Railroad Company lists 29 Fink Truss bridges out of a total of 66 bridges on the railroad. The first Fink Truss bridge was built by the Baltimore and Ohio Railroad in 1852 to span the Monongahela River at Fairmont, Virginia (now West Virginia). It consisted of ...
The bridge is 100 feet (30 m) long, with an outside width of 17 feet (5.2 m) and an inside width of 12 feet (3.7 m), sufficient for one lane of traffic. Much of the slate on its gabled roof was reclaimed from the original bridge roof. The exterior is windowless with vertical pine board siding. The structure is of a Burr Truss.
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