Reinforcedconcrete railroad ties; it is claimed weakness in existing types is due to necessity for drilling hole in tie; new patented construction, which eliminated drilling; tie is strengthened, especially at rail seat, where greatest resistance is required.
Reinforcedconcrete railroad ties
Gleisschwellen aus Eisenbeton
Zement ; 22 , n 44
1933
2 pages
Article (Journal)
German
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