File:Solid floors - railroad bridges (1913) (14759709955).jpg

Identifier: solidfloorsrailr00kost (find matches)
Title: Solid floors : railroad bridges
Year: 1913 (1910s)
Authors: Kosters, Stuart Fransworth
Subjects: Bridges Bridges Theses
Publisher:
Contributing Library: University of Illinois Urbana-Champaign
Digitizing Sponsor: University of Illinois Urbana-Champaign

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Text Appearing Before Image:
r the buckle plate floors and coveredwith a layer of brick to form a protection, or with natural rockasphalt mastic placed in and around the upper side of the troughsand draining to outlets through the trough floor into guttersand down-spouts beneath. Sicilian asphalt mastic has been placed over all thesurfaces including the vertical sides of the troughs, and hasbeen successfully applied to the sides of the troughs, even inthe case of those which were 24 inches deep. This was accom-plished by first placing a 3/4 inch layer in the bottom of thetrough; wooden forms like cores were then set in the trough,leav-ing l/2 inch spaces on each side between them and the verticaltrough plates into which asphalt was poured. After it hadcooled, the core boxes were removed and the second coat of asphaltwas placed in the bottom of the trough, increasing the thick-ness there to 1 l/2 inches. Afterward the troughs were filledin the usual manner with stone ballast applied directly to theasphalt coating.
Text Appearing After Image:
-16-RAIL FLOORS An Old Rail Floor. The variety of uses to which old rails can be putby railway companies is recognized in connection with theconstruction of a solid bridge floor of old rails used on theChesapeake and Ohio Railway. The illustration in figure 11,page 18, shows the floor applied to a plate girder span of101 feet-, but exactly the same general construction is follow-ed in shorter spans. For double track, a single rail lengthextends across both tracks of all four girders, and is fastenedto the outside girders only. The rails rest directly on thetopmost cover plate, and consequently there is a break in theuniform level of their tops at the end of each cover plate.Each rail is attached to the first or bottom cover plate by abolt to prevent it shifting crosswise of the bridge, and theangles and plate for holding the ballast prevent movementlengthwise of the bridge. It will be noticed that the bottomcover plate is extended laterally for the purpose of attachingthe holding bolt

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