. Railroad construction, theory and practice; a text-book for the use of students in colleges and technical schools . Hound grooved-tapered-flatbottom-shoiilder tie plate f% -11- ^ flat bottom tie filate Claw and shoulder tie plate Fig. 126.—Various Forms of Tie-plates. being dark and fiberless. The plates must, when tested, bendsufficiently to prove thorough annealing. The holes in a tie-plate should be about x^ larger than thesize of the intended spike. The length of the plate, perpendicularto the rail, should be such that there is a shoulder of 1| to 2J each side of the rail ba
. Railroad construction, theory and practice; a text-book for the use of students in colleges and technical schools . Hound grooved-tapered-flatbottom-shoiilder tie plate f% -11- ^ flat bottom tie filate Claw and shoulder tie plate Fig. 126.—Various Forms of Tie-plates. being dark and fiberless. The plates must, when tested, bendsufficiently to prove thorough annealing. The holes in a tie-plate should be about x^ larger than thesize of the intended spike. The length of the plate, perpendicularto the rail, should be such that there is a shoulder of 1| to 2J each side of the rail base, a little more on the outside than onthe inside. For very heavy traffic the thickness should be § toI; for lighter traffic, they may be as thin as f. Flat-bottomplates should be at least f thick; corrugated plates, beingsomewhat stiffer, may be thinner for the same, service. The tie-plates under the joint ties must be somewhat longer than the 324 RAILROAD CONSTRUCTION. § 288. intermediates, in order to allow for the extra length from out toout of the angle-plates. 288. Method of setting. A very important
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