Practical engineering drawing and third angle projection, for students in scientific, technical and manual training schools and for ... draughtsmen .. (1897)
Willson, Frederick Newton, 1855-1939 · Princeton, N.J., The author · leaf 44
er arcs.The thin vertical portion of the rail is called the iveh and is y^ wide at its centre. The outlines of theweb are arcs of 8 radius, subtended by angles of 15°, centres on line marked centre line of bolt holes.The weight per yard of the rail shown is given as eighty-five pounds, from which… … 38 THEORETICAL AND PRACTICAL GRAPHICS. The proportions given are slightly different from those recommended in the report* of the com-mittee appointed by the American Society of Civil Engineers to examine into the proper relations to
Mechanical drawing · Lettering
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
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