Maintenance of Way and Structures

American Railway Engineering amount average ballast section Bessemer bolts bottom bridges broken stone Canadian Pacific Railway cars cent cinders clay concrete construction cost creosote creosote oil cubic foot culverts curves cylinder decay ditches Division Engineer double track drain drainage embankment expenses fill flange foreman frog gage gravel guard-rails increased ingot inspection installed joint kind Lake Erie length less load locomotive main track maintenance material metal miles necessary operating organization Pacific Pennsylvania Railroad piles pine pipe placed plant plate rail rail-fastening Railroad Railway Engineering Association renewals right-of-way road roadbed roadmaster rolled sand screw-spikes shown in Fig side signals single track slag slides slope spikes splice-bar steel stone ballast structures subgrade superelevation SUPERVISOR surface switch tamping tangents tie-plates tie-renewals timber traffic train treated treatment trestle untreated weight wheel width wood wooden yard York Central zinc chloride