trunnion bascule bridge

(fgriggsjr@twc.com). The action is that of a parallel link mechanism, in which the main leaf trusses, the links, the ﬁxed portion, and the counterweight box are parallel and equal elements… It also permits the elimination of all curved structural work and track girders, which tends to greater economy in design, greater’ accuracy in shop work, and greater speed in construction and erection…, The builders of this bridge state that… the Wabash Ry.

M. ASCE, D. … Although thus first applied in the overhead type of bridge in 1904, the pin-connected concrete counterweight was originally proposed by the writer for the underneath counterweight type of bascule in 1901 in a series of plans which became the subject of much discussion and which later were embodied in patent application No. endstream endobj 184 0 obj<> endobj 185 0 obj<>/Font<>/ProcSet[/PDF/Text/ImageB]>>/Type/Page>> endobj 186 0 obj<> endobj 187 0 obj<>stream The counterweight is further supported by means of a rigid member termed a ‘counterweight link,’ one end being pivoted to the counterweight and the other to the fixed tower, forming the trunnion support. 0000008027 00000 n The first bascule span Strauss built on his own was for the Wheeling and Lake Erie Railroad (W. & L. E. or Wabash) in Cleveland, Ohio, over the Cuyahoga River. In August 1906, he linked up with the Wallace-Coates Engineering Company. 738,954, applied for in December, 1902, and issued September, 1903.”. j�U��:��n�?#��i��d$$�U1$y��2+��H�o$)0��$�KM As a result, in 1901 the limit of length and weight of bascule spans and consequently the field of usefulness, though greater than in 1893, when the Metropolitan Elevated Scherzer Bridge was built, was still greatly restricted. <<79D0281BFF2F754B9B8482115A72B385>]>> Modjeski had been basing his bascule designs on some of the early bascules spans by William Scherzer and John Page. The item you've selected was not added to your cart. A study is underway to determine whether the bridge can be rehabilitated or not. Bridges in the New York Metropolitan Area, Crosses: Elizabeth River Strauss patented the Strauss bascule design of the trunnion type, which open on a fixed axle. After graduating from the University of Cincinnati in 1892, Joseph Strauss (STRUCTURE, October 2012) became a draftsman for the New Jersey Steel and Iron Company at Trenton, NJ. ��lV ��cʱ �X��l�`� � �an ��*2��(��sy�`8�b,`Yf�)�`�,`�@:9�23Y�&2�m��X��rQf�X�l>�LL��Ap��f�� u] 196 0 obj<>stream In railroad bridges, mitered rail joints can be used without the necessity of rail-lifting devices. The decorated concrete counterweights were located between flanking ornamental towers and dropped down to stop traffic when the bridge was opened. Bascule Bridge Each of these methods has been used throughout the United States on the construction of ascule B Bridges. p. 3 LEAF (a) Span closed, 8 = 0. fb) Span open to angle 8.

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