California · Sacramento : California Highway Commission · leaf 13
ly after the passing of the roller. cement has been specified of a minimum thickness of four inches. Pro¬ Assuming that the weight on the block of wood was three and one vision is made in the contracts that whenever it appears to the Highway third tons only (weight probably nearer 4 tons since the… … concrete. The tests were made with a Testing Four-inch Base, State Highway. so-called ten - ton Kelly - Springfield 1,666 pounds per inch of width of bearing. Looking at it another way, roller, which is so designed that one third of the load is on each rear the concentrated load was the equivalent…
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Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
