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Fail:RRTrussBridgeSideView.jpg

RRTrussBridgeSideView.jpg ‎(800 × 400 piksel, saiz fail: 96 KB, jenis MIME: image/jpeg)

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Keterangan
English: A Southern Pacific Railroad bridge, now part of the Iron Horse Regional Trail in Contra Costa County, California.
  • This crosses a channelized Walnut Creek at the Concord-Pleasant Hill boundary immediately south of Monument Boulevard, altered by blurring the background for clarity and image compression. This is a single track railroad bridge now used for pipeline support and to carry a 'rail trail' pedestrian and bicycle path.
  • The two outer vertical elements are in tension. The central vertical element carries no significant load but stabilizes the upper horizontal chord, which is under compression. The outer vertical elements are in tension and support the deck. The outer diagonal elements are also in compression while the inner diagonals are in tension. Often, Lower chord horizontal elements are in tension, shear, and bending however in this case, the roadbed is supported on a beam structure that runs under the rail tracks, which is in turn supported by the truss at three crossbeams secured at the node points and the abutments. Thus the truss lower chords are in pure tension. Some trusses do not use vertical elements, using greater resistance to bending in the horizontal elements to compensate. One form of truss uses a large number of diagonal elements to form a lattice-like structure. A truss like this may be designed with the roadbed and footings on the top chord and the other elements below. In that case the vertical element purposes are changed from deck support to chord support and their loadings thus change.
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Pengarang Image by en:User:Leonard G.
Kebenaran
(Penggunaan semula fail ini)		 Released to Public Domain 19:49 PST 15 January 2012
Versi lain Image:RRTrussBridgeEndView.jpg
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menggambarkan

Iron Horse Regional Trail Inggeris

truss bridge Inggeris

SP Walnut Creek Bridge Inggeris

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Tarikh/WaktuGambar kenitUkuranPenggunaKomen
semasa17:47, 23 Januari 2006Gambar kenit bagi versi pada 17:47, 23 Januari 2006800 × 400 (96 KB)Nk250px|thumb|right|<center>Another view</center> A Southern Pacific Railroad bridge, now part of the Iron Horse Regional Trail. This crosses a channelized Walnut Creek at the Concord-Pleasant Hill boundary immediately so

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