Railway and Locomotive Engineering . he track (juickly,initcad of drofiping directly on to G is useful where Mnall pure«now movement are likely to be expe- rienced, or where, owing to the open char-acter of the location, the snow is likely todrift heavily. The H, I, and Ltypes are more elaborate, and arc modifi-cations of one another. There is a doubleroof, with intervening rafts and are used at points where the slidesarc apt to bring down masses of rock andtimber. The final type M is a simplemeans of throwing the snow clear of theline. On the mountain side the heavv rock
Railway and Locomotive Engineering . he track (juickly,initcad of drofiping directly on to G is useful where Mnall pure«now movement are likely to be expe- rienced, or where, owing to the open char-acter of the location, the snow is likely todrift heavily. The H, I, and Ltypes are more elaborate, and arc modifi-cations of one another. There is a doubleroof, with intervening rafts and are used at points where the slidesarc apt to bring down masses of rock andtimber. The final type M is a simplemeans of throwing the snow clear of theline. On the mountain side the heavv rock In many instances water pipes are car-ried through the sheids, and hydrants andlines of hose arc provided ready for in-stant use in case of fire. The sheds arepatrolled day and night, so that an out-break may be readily caught. Telephonesare also in use. Fire-breaks occur atintervals in the sheds, so that in case offire occurring only a limited portion ofthe shed can be destroyed. These breaksor open spaces are protected by glance. DIFFERENT TYPES 0^ SNOW-SHEDS. crib is built up to support massive balksthat arc laid so as to point upward overthe track. The lower ends of these tim-bers are buried, and the ground shaped toform a hollow. The descending snowrushes into the (Icpression and up the in-clined plane to Hy into the air and to fallclear of the track, the clearance varyingwith the velocity of the avalanche. crilis or split fences higher up on themountain side, which serve to divide theavalanche, sending it flying over the ad-jacent sheds. .As we have stated, however, as thetunnelling proceeds the snow sheds aredisappearing, and not only will the mostserious of the avalanches be avoided, butthe iirades and curves are lessened, af- January. 1916. AND LOCOMOTIVE fording a heavier haulage and less of risk. The engine consists of two horizontal should be thrown away from the to the snow plow, it will be cylinders with slide valves actuate
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyork, bookyear19
