. Railroad structures and estimates . 21 23 18 6 25 19 5 27 29 12 1 31 33 Method of Finding Total Quantity Cubic Yards in Pier. To find quantities in a pier where length A = 16 0, width 5 = 6 0 and total height T = 40 0,when depth of high water = 20 0 C = 6 + ^-^T^ = 8 9, and F = 20 + 3 = 23 0. From Table. — Quantity in pier without cutwater = 201 c
. Railroad structures and estimates . 21 23 18 6 25 19 5 27 29 12 1 31 33 Method of Finding Total Quantity Cubic Yards in Pier. To find quantities in a pier where length A = 16 0, width 5 = 6 0 and total height T = 40 0,when depth of high water = 20 0 C = 6 + ^-^T^ = 8 9, and F = 20 + 3 = 23 0. From Table. — Quantity in pier without cutwater = 201 cu. yd. In upstream cutwater where F = 23, C = 9, quantity = cu. upstream cutwater where F = 23, C = 8, quantity = , quantity in desired cutwater = — y X 3 = Similarly, quantity for downstream cutwater where F = 3 and C = 8 9 = Total quantity in pier QUANTITIES IN BRIDGE PIERS. 89 TABLE 45.— BRIDGE PIERS WITH OR WITHOUT CUTWATERS FOR HALF DECK PLATE GIRDERS. Base of Rail. W+E+10 If this base does not givesufficient area for piling re-quired, the area may be in-creased by steps as shown, bydotted lines, minimum distance. c. to c, piles= 26Distance c. of pile to edge ofmasonry = l load per pile=40,000lbs. Fig. 19b. Quantities, Cubic Yards in One Pier tvithout Cutwaters for H. D. P. G. Spans. A = 180. T. Width B. 40 50 60 70 80 90 100 12 39 48 56 64 72 81 89 14 46 56 66 75 85 95 104 16 53 64 75 87 97 109 120 18 61 74- 86 98 111 123 136 20 69 83 97 111 124 138 152 22 77 • 93 108 123 139 155 170 24 86 102 120, 136 153 170 187 26 95 113 132 150 169 187 205 28 104 124 144 163 183 203 223 30 113 134 156 177 198 220 241 32 123 146 169 191 214 237 260 34 133 157 181 206 ^ 230 254 279 • 36 143 169 195 221 247 273 298 38 153 181 208 236 263 291 318 40 164 193 222 251 280 309 338 42 176 206 237 267 298 329 359 44 188 220 252 284 316 348 380 46 200 234 268 301 335 368 402 48 212 247 283 318 353 389 424 50 225 26
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