Spons' dictionary of engineering, civil, mechanical, military, and naval; with technical terms in French, German, Italian, and Spanish (1871)
Spon, Edward, Byrne, Oliver, Spon, Ernest · London, New York : E. & F.N. Spon · leaf 86
if we consider them as forced a little. It is generally more convenient to make only the upper flange or bow arched, the lower flange or stringer being straight and provided with points for fixing the cross-girders. We shall designate more specially this particular form by the name of arched… … bered from the middle. The bow is a polygon, having its summits upon a parabola with a vertical axis, and the sides of which have a constant horizontal projection equal to 5. The Mrth vertical rod has a length expressed by h 1 — - , ~~ , and the value of the sum L m O + 1)J of the lengths of the 2…
Engineering
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