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 434
Sills ScAL£ f Inch1 Foot.Fig. 3. … ScALe!tli*CH-IF<f$Zi. Viz 4. 530(1 MODERN FRAMED STRUCTURES. The ordinary practice in the design of timber trestles has been investigated by Mr. A. L.Johnson,* chief computer on the U. S. Timber Test work, and he has found that the currentfactors of safety in such structures vary, for different…
