The theory and practice of modern framed structures : designed for the use of schools, and for engineers in professional practice (1897)
Johnson, J. B. (John Butler), 1850-1902, Bryan, C. W. (Charles Walter), 1863-1927, Turneaure, Frederick Eugene, 1886- · New York : J. Wiley & Sons · leaf 148
Fio. 183. … Fig. 184. Referring now to Fig. 184, let md be drawn parallel to OB and then Op through d.Then, since 6)4 = Bd^ and Bm=/^d — b, we have Bp=4d=b. Therefore, by similar triangles, b k b k -7, =■ , and rry ■=.—,b y b y (3) V Multiplying, we get b — b.^. The above construction being carried out as in…
