. Railroad structures and estimates . 21 23 25 27 29 31 33 12 8 Method of Finding Total Quantity Cubic Yards in Pier. To find quantities in a pier where length A = 18 0, width B = 6 0 and total height T = 40X),when depth of high water = 20 0 C = 6-^ 40-12 = 8 9, and F = 20 + 3 = 23 0. From Table. — Quantity in pier without cutwater = 222 c
. Railroad structures and estimates . 21 23 25 27 29 31 33 12 8 Method of Finding Total Quantity Cubic Yards in Pier. To find quantities in a pier where length A = 18 0, width B = 6 0 and total height T = 40X),when depth of high water = 20 0 C = 6-^ 40-12 = 8 9, and F = 20 + 3 = 23 0. From Table. — Quantity in pier without cutwater = 222 cu. yd. In upstream cutwater where F = 23, C = 9, quantity = cu. upstream cutwater where F = 23, C = 8, quantity = , quantity in desired cutwater = —r^ X 3 = Similarly, quantitj- for downstream cutwater where F = 3 and C = 8 9 = Total quantity in pier QUANTITIES IN BRIDGE PIERS. 91 TABLE 46. — BRIDGE PIERS WITH OR WITHOUT CUTWATERS FOR THROUGH TRUSS SPANS. Base of Rail. B+6
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