irst 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… … -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…
Bridges · Theses
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