Journal of the Association of Engineering Societies (1881)
Association of Engineering Societies (U.S.) · New York, [etc.] Board of Managers · leaf 21
Fig. 2. Same Men as in Fig. i. Fig. i. 41.8 Lbs. per So. Ft. ( 10 men, averaging 150.6 lbs., on 36 Differently Spaced. sq. ft.) … Fig. 4. 47.2 Lbs. per So. Ft. Fig. 3. 41.8 Lbs. per Sq. Ft. (11 men, averaging 154.6 lbs., on 3b (5 men, averaging 133.8 lbs., on 16 sq. ft.) sq. ft.) Figs. 1-4. Crowds Weighing 41.8 and 47.2 Lbs. per So. Ft.
Engineering
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