International Correspondence Schools · Scranton, Pa. : The Colliery engineer co. · leaf 237
atted v^h^n fresh are alwaysof more value than when stale, and the daily office workunites the different parties which are separated during theday, sustaining a common interest in the work. If the con-tour maps are to keep pace with the survey, the draftsmanmust be an expert. Each day he plats the… … Fig. 358. RAILROAD LOCATION. 827 themselves for reaching another point of that Hne, and re-quire the running of spur lines to determine the most advan-tageous route. The main line l)eing run, the spur lines aretied into it, designating them by different letters, as line.i,line B, etc. The…
Railroad engineering
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