Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 30
or the materials to be used. Often the selection isa matter of great importance, and can be wisely performed onlyby an experienced engineer, for this is a matter where hard-and- Vi STRENGTJl OF MATERIALS 11 fast rules should not govern but rather the judgment of the expert.But there are certain… … Fig. 5. (After Johnson.) 2. The working strength should be smaller for parts of astructure sustaining varying loads than for those whose loads aresteady. (Actual experiments have disclosed the fact that thestrength of a specimen depends on the kind of load put upon it,and that in a general way it…
Architecture · Building · Carpentry
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