Slabs used by Chicago, Burlington and Quincy under crossing of two main line tracks. Outside dimensions were 10 ft. × 10 ft. with depth of 1 ft. 8 in.
Concrete slabs under railway crossings
Ry. Maintenance Engr
Railway Maintenance Engineer ; 16 , n 4
1920
2 pages
6 Figs.
Article (Journal)
English
© Metadata Copyright Elsevier B. V. All rights reserved.
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