Engineer of U. S. Bureau of Public Roads discusses reduction of number of aggregate sizes; adoption of series of nominal size limits; recommendations of standards committee of National Sand and Gravel Assn. for commercial sizes of sand and gravel; plan will facilitate shipping of aggregate in separated sizes. Presented at annual meeting of Nat. Sand and Gravel Assn. (See also Nat. Sand and Gravel Bul vol. 11, no. 3, Mar. 15, 1930 pp. 5-7; Rock Products, vol. 33, no. 3, Feb. 1, 1930, pp. 81-83; Can. Engr., vol. 59, no. 15, Oct. 1, 1930, pp. 529-530; Roads and Streets, vol. 70, no. 4, Apr. 1930, pp. 133-134; Pit and Quarry, vol. 19, no. 10, Feb. 12, 1930, pp. 52-54)
Need for simplification of sizes in sand and gravel industry
Pub. Roads
Public Roads ; 10 , n 12
1930
3 pages
Aufsatz (Zeitschrift)
Englisch
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