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 44
welay of? in {a), Oi = lOOO lbs. by scale, and parallel to R; 1-2= 500 lbs. downwards ; and 2-3 and O^ parallel to the pieces/w and Ifi respectively. Then 2-3 = stress in /;;/, and, pointingin the direction w/, it indicates compression ; ^O — tensile stressin /n. Fig. (d) is the force polygon for… … Fig. 47. 28 MODERN FRAMED STRUCTURES.
