. Railroad structures and estimates . d shaping of the ballast in accordance with the stand-ard section. The C. P. R. ballast templates are illustrated In Fig. 81a andare made of 1 X 4 and 1 X 6 timbers nailed together andshaped to conform with the lines of the ballast sections. It willbe noted that both the main line and branch line templatesfor gravel ballast are ahke except for position of gauge blocks. The cost of each template is about $ each. Cost of Ballasting. — Stone ballast is considered to be the mostefficient; next comes broken slag (not granulated), then gravel,chatts, burnt c
. Railroad structures and estimates . d shaping of the ballast in accordance with the stand-ard section. The C. P. R. ballast templates are illustrated In Fig. 81a andare made of 1 X 4 and 1 X 6 timbers nailed together andshaped to conform with the lines of the ballast sections. It willbe noted that both the main line and branch line templatesfor gravel ballast are ahke except for position of gauge blocks. The cost of each template is about $ each. Cost of Ballasting. — Stone ballast is considered to be the mostefficient; next comes broken slag (not granulated), then gravel,chatts, burnt clay or gumbo, and cinders. The efficiency ofgravel ballast is much improved by washing, which removesclay and dust. Stone ballast that has been in the track for along time gets clogged up with dust and dirt and is much im-proved by screening. Ballast is most economically handled bycars designed for the purpose but they are not always available;whatever class of car is used the cars in the train should be of 244 COST OF BROKEN STONE BALLAST SECTION TEMPLATE
Size: 3019px × 828px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthororrockjohnwilson1870, bookcentury1900, bookdecade1910
