Specification provides for ties for standard 4-ft 8 1/2-in. gage railway track over which speed is limited to 20 mph of four types as may be specified by purchaser: method of manufacture; performance test; method of making works cube tests of concrete. (see also abstract in Concrete and Constr Eng v 36 n 11 Nov 1941 p 459)
Concrete railway sleepers
Brit Standards Instn -- Brit Standard
1941
11 pages
Standard
Englisch
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