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 50
o apply the same formulée with the signs of the strains changed ; the lower flange will have become the upper, the struts braces, and vice versa. We must also change o into ß, and ß into a, the symbol a being always applied to struts and ß to braces. We shall consider only the two arrangements… … 7L gVàj ßlß í=(2m+l)5 The formulée applicable to these two arrangements and to their particular cases will be found in Table VIII. 59. Inclination of the Lattice-bars. — When the inclination a of the bars is quite arbitrary, it should be taken equal to 45°, for a bar crossing an interval 5, will…
Engineering
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