![]() I'm not confident about this structurally. The common practice seems to be to temporarily brace between 4 noggins (2 either side) of the truss to be cut front & back, then cut out the truss, and double up on noggins joining the cut truss bottom chord to the truss bottom chords either side. I understand that there are risks etc associated with cutting a truss but there must be a way that loft hatch installers etc do it. The cut would remove approx 70cm from the centre of the bottom chord of one truss and this would include the metal join plate. I would like to cut a truss to make an opening of 80x70 so the loft space can be better accessed for storage and I can get bulky (but light) items like suitcases up in there. The truss bottom chord doesn't actually span that far from the proposed cut as there is a support wall approx 50cm from it (though bottom chord total length from bungalow outer wall plates is approx 11m). Albert Fink served as President of the American Society of Civil Engineers in 1880.Existing hatch to access loft is approx 40x70cm running between 2 Fink trusses (W design?) at 43cm centres in a 70's bungalow.The Fink truss was adopted by Latrobe for all bridges on the B&O Railroad and the Parkersburg Branch. He was initially employed by the Baltimore and Ohio Railroad as principal assistant to Benjamin Latrobe, along with Wendel Bollman, another notable bridge builder. Albert Fink and his brother, Henry, arrived in Baltimore, Maryland from Germany in 1849.Finks truss configuration was used widely in railroad bridges, including large structures such as the Green River Bridge south of Elizabethtown, Kentucky and the 14th Street Bridge across the Ohio River at Louisville, Kentucky.The upper chord is untreated oak about 14 inches by 15 inches in size. The truss consists of vertical and diagonal members (that are in tension) of wrought iron, while the top chord, supporting bents and floor systems, are of wood.It was relocated again in 1985 to Lynchburg's Riverside Park to serve as a pedestrian bridge. It was moved to its present location and converted to a vehicular bridge over a railroad spur in 1893 when the Norfolk and Western mainline was moved. The Fink Deck Truss Bridge, built circa 1870, is thought to have been originally used on the Norfolk &Western mainline.Important to the early days of railroading in America, the Fink truss bridges contributed significantly to the nation's growth and economy. The patented truss bridge was a uniquely American structural engineering solution to the need for long-span railroad bridges to carry heavy loads. of this truss system that was widely used from 1854 to 1875. ![]() The Fink Deck Truss Bridge in Lynchburg is the only survivor in the U.S. A number of truss systems were developed, including two patented designs by Albert Fink: the Fink Deck Truss, in which most of the supporting members were below the deck, and the Fink Through Truss, in which the truss members were above the deck. in the mid-19th century, engineers raced to design bridges that were stronger and longer, without adding too much weight. It was relocated again in 1985 to Lynchburg's Riverside Park to serve as a pedestrian bridge.Īs railroads expanded throughout the U.S. The Fink Deck Truss Bridge is thought to have been originally used on the Norfolk and Western mainline railway.
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