International Correspondence Schools · Scranton, Pa. : The Colliery engineer co. · leaf 612
is fastened to the parts to be strengthened. Sway-bracingis usually fastened to the cap and sill with f-in. bolts, andspiked to the posts or piles with boat spikes. Diagonalbraces, especially those framed or notched into the benttimber, are frequently found loose and ineffective. When RAILROAD… … to the centrifugal force ofheavy trains at high s})eedis a severe tax upon astructure, and the locatingengineer should, if pos-sible, so modify his line asto place all trestles on fig. cos. tangents. Circumstances, however, sometimes render thecurved trestle a necessity, in which case the outer…
Railroad engineering
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