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 21
esses in the member always beingof one sign * or kind. * If this book tension is called minus and compression plus. There is no objection to following the contrary rule.It is only important that both stresses and forces of opposite kinds should enter with opposite signs. 4 MODERN FRAMED STRUCTURES.… … Fig. I. 16. Illustration.—In Fig. i, which represents a Pratt Truss, the compression members,or struts, are shown by double lines, and the tension members, or ties, by single lines. Whenthe end posts are inclined as in the figure, they would seem to belong about as much to theupper chord as to the…
