Faced with difficult track conditions resulting from soft spots in roadbed at points where drainage is practically nonexistent, Missouri Pacific Railroad studied feasibility of using form of sub-ballast support to give uniform distribution of traffic loads to subgrade; installation undertaken involving 4600 ft of track; article describes conditions to be overcome, plan for supporting track and methods of making installation.
Sub-ballast slabs cure unstable roadbed
Ry Eng Maintenance
Railway Engineering and Maintenance ; 34 , n 7
1938
4 pages
Aufsatz (Zeitschrift)
Englisch
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