Design adopted after prolonged experimentation has little resemblance to usual types; reinforced-concrete foundation acts as unit to hold rails in position; first cost is $75,000 per mi.; maintenance cost is estimated at less than $100 per mi. per year; diagram illustrating details of double anchorage unit for use under castings of special work.
Track without ties
Elec. Ry. Jl
Electric Railway Journal ; 74 , n 3
1930
4 pages
9 Figs.
Article (Journal)
English
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