Questa immagine potrebbe avere delle imperfezioni perché è storica o di reportage.
. Railroad structures and estimates . o o o o O o o o o H O 15.8 US711 1.35 Ufl07 H O U O O O O O U 120 188.6;S6224 4 $216 $2080 $635 $4000 $13, 973 $14, 873 $2.65 $2 82 110 172.9 5706 13.6 612 1.27 100 4 216 2080 635 4000 13, 349 14, 249 2.53 2.70 100 15/1 5186 11.5 517 1.19 85 4 216 2080 635 4000 12, 719 13, 519 2 41 2.58 95 149.2 4927 9.40 423 0.96 76 4 216 2080 635 4000 12, 356 13, 256 2.34 2.51 90 141.4 4667 8.72 392 0.96 76 4 216 2080 635 4000 12, 066 12, 966 2.28 2.45 85 133.5 4408 7.43 334 0.80 63 4 216 2080 635 4000 11, 736 12.636 2.22 2.39 80 125.7 4148 7 14 321 0.80 63 4 216 2080 635 4000 11, 464 12, 364 2.17 2.34 y5 117.8 3889 6.73 303 0.80 63 4 216 2080 635 4000 11, 186 12, 086 2 12 2.29 70 110.0 3630 6.40 288 0.80 63 4 216 2080 635 4000 10, 912 11, 812 2.07 2.24 65 102 1 3372 6.07 2V3 0.71 56 4 216 2080 635 4000 10, 632 11, 5.32 2.02 2.19 60 94.3 3116 6.00 225 0.71 56 4 216 2080 ass 4000 10.328 11.228 1.96 2.13 56 88.0 2901 2.5V 116 0.71 56 4 216 2080 635 4000 10, 007 10, 907 1.90 2 07 TABLE 6a. — SINGLE TRACK: GRAVEL BALLAST.. ^■?^ « Cost per mile. Cost per foot. Rails at $33ton. Joint bars at $45 ton. Bolts at$79 ton. Spikes atS54 ton. CO o .Is — 3a < Wtof •2^ 03 Ha .2—:o « 0) Q Ha rail. fl 3 ^ a c Z-c. c i 188 6 1 si a 15.8 i a1.35 i $107 a i 1 i 1 1 i i 1 12U $6224 $711 $216 $2080 $1600 $11, 573 $12, 473 $2.20 $2.37 110 172 9 5706 13.6 612 1 27 100 216 2080 6.35 1600 10, 949 11.849 2.08 2 25 100 157 1 518, 511.5 617 lilt 85 216 2080 a35 1600 10, 318 11.218 1.96 2 13 95 149 2 4.»2« 9 40 423 0 06 76 216 2080 635 1600 9, 956 10.856 1.89 2.06 90 141 4 4fir)7! 8.72 392 0 96 76 216 2080! 6.35 1600 9, 666 10, 566 1.83 2.00 85 133 5 440.S 7.43 334 0 80 6;j 216 20S0 635 1600 9, 336 10, 236 1.78 1.95 80 125.7 4US| 7 U 321 0 80 63 216 2080 635 1600 9.0W 9, 964 1.72 1.89 75 117 8 3H.S(i 6 73 303 0 80 63 216 20S0 635 1600 8.786 9, 686 1 66 1.83 VO 110 0 3630 6 40 2H8 0 80 6;j 216 2080 a35 1600 8, 512 9.412 1.62 1.79 65 102 1 337! fl 07 273 0 71 56 216 2080 KiH 1600 8, 232 9.132