. Steel rails; their history, properties, strength and manufacture, with notes on the principles of rolling stock and track design . Fig. 64. — Mexican Railway Steel Tie. (Am. Ry. Eng. Assn.) Buhrer Concrete Tie. — (Fig. 65.) About 600 of these ties were used onthe Pennsylvania Lines west of Pittsburg during 1903 and 1904 in stone 500 were subjected to heavy and high-speed traffic and the balance tomedium traffic. The ties failed under traffic, the concrete breaking and crumb-ling off from the reenforcement. The ties were removed from time to time andby December, 1906, all had b
. Steel rails; their history, properties, strength and manufacture, with notes on the principles of rolling stock and track design . Fig. 64. — Mexican Railway Steel Tie. (Am. Ry. Eng. Assn.) Buhrer Concrete Tie. — (Fig. 65.) About 600 of these ties were used onthe Pennsylvania Lines west of Pittsburg during 1903 and 1904 in stone 500 were subjected to heavy and high-speed traffic and the balance tomedium traffic. The ties failed under traffic, the concrete breaking and crumb-ling off from the reenforcement. The ties were removed from time to time andby December, 1906, all had been removed on account of breaking. STEEL RAILS ■a - D \ 1.
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