The elasticity and resistance of the materials of engineering . Keystone Cloned. Open Square ^ ^ £L l*hoen 130 Co. An ** open column is one in which the flanges of the seg-ments that compose it are separated by an open space; aclosed column is one in which no such spaces are found. Allthe columns treated in the table are closed except Nos. 2, 3, 4,8, 25,31, 24, 26, 30, and 5. The columns 13 and 19 failed about axes giving greatestmoments of inertia or radii of gyration. This was probablydue to some cause equivalent to a less degree of constraint atthe ends than was intended. For t
The elasticity and resistance of the materials of engineering . Keystone Cloned. Open Square ^ ^ £L l*hoen 130 Co. An ** open column is one in which the flanges of the seg-ments that compose it are separated by an open space; aclosed column is one in which no such spaces are found. Allthe columns treated in the table are closed except Nos. 2, 3, 4,8, 25,31, 24, 26, 30, and 5. The columns 13 and 19 failed about axes giving greatestmoments of inertia or radii of gyration. This was probablydue to some cause equivalent to a less degree of constraint atthe ends than was intended. For this reason those two resultsare not used in determining x andjK. be noticedagain. An examination of the table shows that the flat end swelledand open straight Keystone columns give about the same ulti-mate resistance, by experiment, per square inch, so long as cremains the same, thoughthe straight columns give the largestresults by a little. Hence / was taken as an arithmeticalmean of the experimental results of Nos. 4, 25, 31, 24, 26, and30, and c at 9,208. In
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