. The science of railways . Fig. 43. BOTTOM DUMP Fig. 44. IRON END DUMP CART, Embankments must be built up regularly, andcarried up their full width as they progress, toensure uniform settlement. The degree of settle- 104 BUILDING AND REPAIRING RAILWAYS. ment of an embankment is an uncertain quantity,depending on the kind of material and the stateof the weather when the work was done; if wet,the embankment will be more compact than ifthe weather was dry. The manner of doing thework also affects sattlement, thus, if embank-ments are put up wholly with drag scrapers fromthe sides they wi
. The science of railways . Fig. 43. BOTTOM DUMP Fig. 44. IRON END DUMP CART, Embankments must be built up regularly, andcarried up their full width as they progress, toensure uniform settlement. The degree of settle- 104 BUILDING AND REPAIRING RAILWAYS. ment of an embankment is an uncertain quantity,depending on the kind of material and the stateof the weather when the work was done; if wet,the embankment will be more compact than ifthe weather was dry. The manner of doing thework also affects sattlement, thus, if embank-ments are put up wholly with drag scrapers fromthe sides they will be the most compact; if putup by wheel scrapers from the side they will beless compact, while the poorest embankment ismade by wagons and carts hauling from a cut orborrowpit at one end and building the bank inlifts of two or three feet at a time, the emptywagons returning on the top of the and cart embankments settle the most. Frosted or frozen material, especially clay,should never be put in an embankment, unlessprovision is made
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1900
