ngth of the common wooden pole. Carefully calculated accounts of all expenditures forlabor and material in the construction show that underaverage conditions the first cost is slightly more than A table of road resistances in pounds per ton (of2,240 pounds), has recently been published in… … THE TYPHONOID VIEWED FROM THEFRONT. 46; ordinary quality from 50 to 60; and soft macadamas high as 97 pounds per ton. The best gravel andcobbles are given as 57 and 60 respectively, whileordinary and very bad cobbles are placed at 130 and240 pounds. Dry, hard clay is said to offer a resist-ance of…
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