. Railroad construction, theory and practice; a text-book for the use of students in colleges and technical schools . mile 50000 or,Passenger-car mileage per annum per mile of 5000 with maximum speed of passenger-trains of 40 miles per hour. *^Class ^C shall include all districts of a railway not meetingthe traffic requirements of Classes ^A^ or ^B. The classification was adopted on the consideration thatquality of traffic as well as mere tonnage should determinethe classification of a railroad. For example, it is consideredthat a road which operates a train at a speed of 50 miles
. Railroad construction, theory and practice; a text-book for the use of students in colleges and technical schools . mile 50000 or,Passenger-car mileage per annum per mile of 5000 with maximum speed of passenger-trains of 40 miles per hour. *^Class ^C shall include all districts of a railway not meetingthe traffic requirements of Classes ^A^ or ^B. The classification was adopted on the consideration thatquality of traffic as well as mere tonnage should determinethe classification of a railroad. For example, it is consideredthat a road which operates a train at a speed of 50 miles an (hour should adopt the first class or Class ^A standards, eventhough there is but one train per day on that railroad. It llikewise means that any road whose traffic makes necessary the 270 RAILROAD CONSTRUCTION. § 235. construction of a regular double track should adopt the first -class specifications. ^ 235. Recommended sections for the several Fig. 110 are shown a series of cross-sections which were _>|.124«-33-^ -10 0 I SLOPE 2 TO _- --^^^ SLOPE Vn TO THE FOOT CRUSHED ROCK AND SLAG. CRUSHED ROCK AND SLAG
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