. Concrete bridges and culverts, for both railroads and highways . 7 441061 472055 5020173 5200:67 533061 5536!55 5760 117: 1843111! 2076 105 236599 2692 115 2360 109 2600 103 2905 97 3220 91 3530 115 2950 109 3190 103 3485 97 3870 91 4210 106 4150100 4580 94 500088 5310 105 507099 525093 561087 6050 103 585097 598091 641085! 6870 103 695097 718091 745085 7860 ■~ a» 147 2283141 2576135 2955129 3372145 2940139 3230 133 3625127 4050121 4510| 9145 367010139 39S011133 435512127 485013121 5350:14136 518015130 5730|16124 626017118 671018135 635019129 655020123| 703021117, 7650,22133 7350:23127 75302
. Concrete bridges and culverts, for both railroads and highways . 7 441061 472055 5020173 5200:67 533061 5536!55 5760 117: 1843111! 2076 105 236599 2692 115 2360 109 2600 103 2905 97 3220 91 3530 115 2950 109 3190 103 3485 97 3870 91 4210 106 4150100 4580 94 500088 5310 105 507099 525093 561087 6050 103 585097 598091 641085! 6870 103 695097 718091 745085 7860 ■~ a» 147 2283141 2576135 2955129 3372145 2940139 3230 133 3625127 4050121 4510| 9145 367010139 39S011133 435512127 485013121 5350:14136 518015130 5730|16124 626017118 671018135 635019129 655020123| 703021117, 7650,22133 7350:23127 753024121 806025115 872026133 874027127j 8980)28121: 945029115 991030 210 CONCRETE BRIDGES AND CULJERTS. TABLE X REINFORCED CONCRETE, DOUBLE BOX, RAILROADCULVERTS—BEAM AND SLAB CONSTRUCTION TO ACCOMPANY FIGURE 45 < 1^ 8 4 64 15 6 96 8 128 10 160 10 4 80 15 6 120 8 160 10 200 12 240 12 4 96 18 6 144 8 192 10 240 12 288 14 6 168 18 8 224 10 280 12 336 16 6 192 20 8 256 10 320 12 384 18 6 216 22 8 288 10 360 12 432 20 6 240 24 8 320 10 400 12 480 Top and Bottom,. Rods. Ter Lin. ft. - ^ - H -1 - H - H - >8 -1 -IH - H - % -% 1 -IH - % -1 -1% VA % 1 ; IH IVh % 1 IJ^ W^ h 1 IH , IVs ! 320 3483884334054464895375875105556016567107678258819469119631024108810691130 82. r CONCRETE CLLrERTS AND TRESTLES. 211 TABLE X—Continued REINFORCED CONCRETE, DOUBLE BOX, RAILROAD CULVERTS—BEAM AND SLAB CONSTRUCTION TO ACCOMPANY FIGURE 45 2 Portals. 10 !l5 ft. Bank •^ 4© 20 ft. Bank. 30 ft. Bank. 40 ft. Bank. 50 ft. Bank. -= I to .^ 1910!.6 3000 4300!.0 | 2720| .5, ! 9700!.0 11600 ; 9400:.
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Keywords: ., bookcentury1900, bookdecade1900, bookidconcretebrid, bookyear1909
