Rail pre-welded in lengths up to 3180 ft. was installed by Birmingham Elec. Co. without interruption to service; joints were thermit welded under pressure produced by special clamps; concrete mixed at a central plant was transported and poured from an end-dumping rail car.
Track reconstruction cost reduced by use of modern equipment
Elec. Ry. Jl
Electric Railway Journal ; 65 , n 14 ; p 537-540
1925
4 pages
11 Figs.
Aufsatz (Zeitschrift)
Englisch
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