International Correspondence Schools · Scranton, Pa. : The Colliery engineer co. · leaf 378
ents the natural slope of the ground; C, the surface ditch;B D, the side slope of the cutting, and D E, the half widthof the roadway. The center line of the road is denoted byE F. 153-4. Changing Channels of Streams.—It fre-quently happens when the line of road is parallel to the gen-eral direction… … FlG. 456. tion which warrants the changing of a channel is shown inFig. ■\:6[], in which the located line ABC crosses the streamD G L at E and H, requiring an expensive bridge at eachpoint. By cutting a channel across the narrow neck E, bothbridges are avoided. Such instances are of…
Railroad engineering
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