. Railroad construction, theory and practice; a text-book for the use of students in colleges and technical schools, and a hand-book for the use of engineers in field and office . the Boston &Maine Railroad. Snow-fences, in connection with a moderateamount of shoveling and plowing, suffice to keep the tracksclear on railroads not troubled with avalanches. In such casessnow-sheds are the only alternative. 365. Snow-sheds. These are structures which will actuallykeep the tracks clear from snow regardless of its depth they are only necessary in the comparatively raresituations
. Railroad construction, theory and practice; a text-book for the use of students in colleges and technical schools, and a hand-book for the use of engineers in field and office . the Boston &Maine Railroad. Snow-fences, in connection with a moderateamount of shoveling and plowing, suffice to keep the tracksclear on railroads not troubled with avalanches. In such casessnow-sheds are the only alternative. 365. Snow-sheds. These are structures which will actuallykeep the tracks clear from snow regardless of its depth they are only necessary in the comparatively raresituations where the snowfall is excessive and where the snow 392 KAILROAD CONSTRUCTION. §365. is liable to slide down steep mountain slopes in avalanches frequently bring down with them rocks, trees,and earth, which would otherwise choke up the road-bed andrender it in a moment utterly impassable for weeks to sheds are usually built of 12^ X12 timber framed in aboutthe same manner as .trestle timbering; the bents are some-times placed as close as 5 feet, and even this has proved insuffi-cient to withstand the force of avalanches. The sheds are there-. TYPICAL SHED
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Keywords: ., bookauthorwebbwalt, bookcentury1900, bookdecade1920, bookyear1922
