Practical draughtsmen's work, with numerous engravings and diagrams (1903)
Hasluck, Paul N. (Paul Nooncree), 1854-1931, ed · Philadelphia, D. McKay · leaf 82
Fig. 136.—Gardeners Method of Constructing an Ellipse. semicircular arches. In the ordinary way, an arch crosses atright angles to the opening it spans, but in the case of a railway … Fig. 137.—Plan of Skev/ Arch. crossing a road diagonally, or a road crossing a canal similarly, askew bridge is necessitated. In the accompanying plan (Fig. 137),a bridge is shown crossing a roadway with an angle of skew at 80 PRACTICAL DRAUGHTSMENS WORK. ab d o{ ZO degrees. The plan does not show…
Mechanical drawing
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