Engineering and Contracting . xing and Conveying Plant, C. B & Q. R. R. tunnel. Cast iron grates will Ije placed every10 ft. along the track side of eacli gutter toallow the water to flow from the track andballast into the gutters. The pneumatic mixer and conveyor to beused on this work is mounted on a standard40-ft. flat car, as shown by Fig. 2. The binserected on the car contain TO.) cu. ft. of space 5 ft.; then the other siilc wall will be broughtup to the same height; next the first wall willbe brought up to the 10-ft. level. This alter-nate of the side walls continues untilconcr
Engineering and Contracting . xing and Conveying Plant, C. B & Q. R. R. tunnel. Cast iron grates will Ije placed every10 ft. along the track side of eacli gutter toallow the water to flow from the track andballast into the gutters. The pneumatic mixer and conveyor to beused on this work is mounted on a standard40-ft. flat car, as shown by Fig. 2. The binserected on the car contain TO.) cu. ft. of space 5 ft.; then the other siilc wall will be broughtup to the same height; next the first wall willbe brought up to the 10-ft. level. This alter-nate of the side walls continues untilconcreting has reached points well up ontothe haunches of the tunnel arch. Finally theremaining top section of the arch is work will be done by railway company Principles and Methods for the Valua-tion of Railroad Property andOther Public Utilities. A committee of the American Society olCivil Engineers was appointed in , to formulate principles and methods forthe valuation of railway property and other. Fig. 3. End View of Pneumatic Plant forTunnel Concrete Work, Showing Con-veyor Pipe and Incline to Mixerfrom Cement Storage UnderBins. public utilities. This committee consisted o!Frederic P. Stearns, Leonard Metcalf, Thoma*H. Johnson, Alfred Noble, William G. Ka>mond and J. P. Snow. At the annual ^held in January the committee presented tinreport on Valuation for the Purpose of Rate-Making. This report slightly condensed fol-lows : Valuations of the property of public servicecorporations may be made for a variety ofpurposes, the most important of w-hich arc thefurnishing of a basis for the regulation otrates and for taxation, capitalization and pur-chase. It is sometimes held that valuations for allnf these purposes should give identical view cannot prevail if the laws of thi(iif^erent states and certain decisions of tliicourts are complied with. For instance. tluTare in many states laws indicating how tinproperty of public .service co
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