Specification provides data for design and manufacture of both ordinary reinforced concrete and pre-stressed concrete ties; type of ties covered is that in which steel is stretched in straight length, and where anchorage of steel is by bond alone without mechanical aid; specification provides for ties for standard 4 ft 8 1/2 in. gage railway tracks over which speed is limited to 30 mph of two classes.
Concrete railway sleepers
Brit Standards Instn -- Brit Standard
1944
16 pages
2 Supp sheets
Standard
Englisch
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