. Steel rails; their history, properties, strength and manufacture, with notes on the principles of rolling stock and track design . SUPPORTS OF THE RAIL 99 Fig. 66 shows the bottom or bearing surface of this tie, which illustrateshow the concrete is left out at the center to provide against side motion. ■ £ *^m* <? n^^^ ***. ^^^ Fig. 66. — Bottom Surface of Buhrer Concrete Tie. (Am. Ry. Eng. Assn.)

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Keywords: ., bookcentury1900, bookdecade1910, bookidsteelrailsth, bookyear1913