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For nearly a century the accepted value for the weight, of a dense crowd of people has been about 100 lb. per sq. ft., conservative designers often assuming a slightly higher figure, and their more daring brethren a considerably lower one. The investigations of Stoney, Kernot, and others, long ago showed that this was by no means the maximum value, and the elaborate work of Johnson, published in 1904, showed that an intensity of 183 lb. per sq. ft. was within the range of possibility. The effect of Johnson’s investigations was to raise slightly the load intensities prescribed by some specifications, but this effect was by no means general.
For nearly a century the accepted value for the weight, of a dense crowd of people has been about 100 lb. per sq. ft., conservative designers often assuming a slightly higher figure, and their more daring brethren a considerably lower one. The investigations of Stoney, Kernot, and others, long ago showed that this was by no means the maximum value, and the elaborate work of Johnson, published in 1904, showed that an intensity of 183 lb. per sq. ft. was within the range of possibility. The effect of Johnson’s investigations was to raise slightly the load intensities prescribed by some specifications, but this effect was by no means general.
Kinetic Effects of Crowds
Tilden, C. J. (author)
Transactions of the American Society of Civil Engineers ; 76 ; 2107-2126
2021-01-01
201913-01-01 pages
Article (Journal)
Electronic Resource
Unknown
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