Southern good roads . to build such a higliway, in-cluding the raising of the grade from 1 to 1 feet at acost of not more than your estimated limit of ^2500per ]ni!e. On section two, as I have imagined it, yon have aproblem of grading, rather than of drainage. That is,the soil will readily dispose of your water, but you mustreduce the grades to a reasonable gradient and with amaterial provide some method for compacting the first to consider then is what shall be your maxi-mum grade. I confess that in this class of construction I proceedbackwards, like a crab, rather than attempting to
Southern good roads . to build such a higliway, in-cluding the raising of the grade from 1 to 1 feet at acost of not more than your estimated limit of ^2500per ]ni!e. On section two, as I have imagined it, yon have aproblem of grading, rather than of drainage. That is,the soil will readily dispose of your water, but you mustreduce the grades to a reasonable gradient and with amaterial provide some method for compacting the first to consider then is what shall be your maxi-mum grade. I confess that in this class of construction I proceedbackwards, like a crab, rather than attempting to dic-tate an absolute gradient. That is. I take the heaviestgrade and see to which per cent I can reduce this with areasonable amount of money, instead of saying ar-bitrarily that a 4 per cent grade is the maximum, Ifigure how much it will cost for a 4 per cent, liowmuch less for a 5 per cent and what the saving wouldbe, should I allow it at even a 6 per cent grade. AYc will say that T have found that I may reasonably. Section of Bad Road on Big Stone Gap Highway in Virginia, Before Improvement Under Direction U. S. Office of Public Roads AFarcli, iQi; ??( irilll. R\ (?,( i( )|) k( ) ADS
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Keywords: ., bookauthorvarnerhe, bookcentury1900, bookdecade1910, bookyear1910
