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IV, TABLE 1. - Tangents and Externals to a 1° Curve. <br />Chord =100 .f t. <br />Int.- _ <br />Angle <br />. - <br />Tangent <br />. _ - <br />External <br />Int. <br />Angle ' <br />Tangent <br />External <br />Int. <br />Angle <br />Tangent <br />External <br />43° <br />2257.0 <br />428.5 <br />50° <br />2071.8 <br />592.3 <br />571-3110.9 <br />E =.023 <br />790.1 <br />10' <br />2266.6 <br />432.0 <br />10! <br />2681.9 <br />596.6 <br />10' <br />3121.7 <br />795.2 <br />20 <br />2276.2 <br />435.6 <br />20 <br />2692.1 <br />600.9 <br />20 <br />3132.6 <br />800.4 <br />30 <br />2285.9 <br />439.2 <br />30 <br />2702.3 <br />605.3 <br />" .30 <br />3143.4 <br />805,6 <br />40 <br />2295:6 <br />442.8 <br />40 <br />2712.5 <br />'609.6 <br />--40 <br />3154.2 <br />810.9 <br />50 <br />2305.2 <br />'446.4 <br />•50 <br />2722.7 <br />614.0 <br />50, <br />3165.1 <br />816.1 <br />44 <br />2314.9 <br />450.0 <br />51 , <br />2732.9 <br />618.4 <br />58 <br />3176.0 <br />821.4 <br />l0 <br />2324.6 <br />453.6 <br />•10 <br />2743:1 <br />622.8 <br />10 <br />3186.9 <br />826.7 <br />20 <br />2334.3 <br />457.3 <br />2Q', <br />2753.4 <br />627.2 <br />20 <br />3197.8 <br />832,0 <br />30 <br />2344.1 <br />461:0 <br />30' <br />2763.7 <br />631.7 <br />30 <br />3208.8 <br />837.3 <br />40 <br />2353.8 <br />464.6 <br />40 <br />2773:9 <br />636.2 <br />40 <br />3219.7 <br />842.7 <br />50 <br />2363.5 <br />468.4 <br />50 <br />2784.2 <br />640.7 <br />50 <br />3230.7 <br />848.1 <br />45 <br />2373.3 <br />472.1 <br />52 <br />2794.5 <br />645.2 <br />59 <br />3241.7 <br />853.5 <br />- <br />• 10 <br />2383.1 <br />475.8 <br />10 <br />2804.9 <br />649.7 <br />10. <br />3252,7 <br />858,9 <br />20 <br />2392.8 <br />1479.6 <br />20 <br />2815.2 <br />654.3 <br />•20' <br />3263.7 <br />864.3 <br />30 <br />2402.6 <br />483.430 <br />30 <br />2825.6 <br />658.8 <br />30 <br />3274.8 <br />869.8 <br />40 <br />2412.4 <br />487.2 <br />40 <br />2835.9 <br />663.4 <br />40 <br />3285.8 <br />875.8 <br />T 50 <br />2422.3 <br />491,0 <br />50 <br />2846.3 <br />668.0 <br />4 -50 <br />3296.9 <br />:880.8 <br />46 <br />2432.1 <br />49.1.8 <br />53 <br />2856,.7 <br />672.7, <br />60 <br />3308.0 <br />886.4 <br />";10 <br />2441'.9 <br />498,7 <br />10 <br />2867:1 <br />677.3 <br />10' <br />3319.1 <br />892.0 <br />20 <br />2451.8 <br />/502.5 <br />.20 <br />2877.5 <br />682.0 <br />20,, <br />3330.3 <br />;897.5 <br />30 <br />2461.7 <br />/506.4 <br />30 <br />2888.0 <br />686.7 <br />30 <br />3341.4 <br />'903.2 <br />40 <br />2471.5 <br />510.3 <br />40 <br />2898.4 <br />691.4 <br />40 <br />3352.6 <br />908.8 <br />50 <br />2481.4 <br />514.3 <br />5Q <br />2908,9 <br />696.1 <br />50' <br />3363.8" <br />•914.5 <br />47. <br />2491.3 <br />518.2 <br />54 <br />2919.4 <br />700.9. <br />61 . <br />3375.0 <br />920.2 <br />- 110 <br />2501.2 <br />522:2 <br />• '10 <br />2929.9. <br />705.7 <br />10 <br />3386.3 <br />925.9 <br />-20 <br />2511.2 <br />526.1 <br />- 20 <br />2940.4 <br />710.5 <br />20 <br />3397:5931.6 <br />1881.5 <br />30 <br />2521.1 <br />530.1 <br />30 <br />2951.0 <br />715.3 <br />30 <br />3408.8 <br />,937.3 <br />40 <br />2531.1 <br />534.2 <br />f 40, <br />2961'.5 <br />720.1 <br />40, <br />3420.1 <br />943.1 <br />50 <br />2541:0 <br />538.2 <br />50 <br />2972.1 <br />725.0 <br />`. 50. <br />3431.4 <br />948.9 <br />4g <br />2551.0 <br />542.2 <br />55, <br />2982..7" <br />729.9, <br />62 . <br />3442.7 <br />954.8 <br />.10 <br />2561:0 <br />546.3 <br />10 <br />2993.8 <br />734.8 <br />10" <br />3454',1.960.6 <br />1930,4 <br />20 <br />2571.0 <br />550.4 <br />; 20 <br />3003.9 <br />739.7 <br />i '20' <br />3465.4 <br />.966,5 <br />30 <br />2581.0 <br />554.5 <br />30. <br />3014'.5 <br />744.6 <br />30 <br />3476.8 <br />972.4 <br />40 <br />2591:0 <br />558,6 <br />'. 40 <br />3025.2 <br />749.6 <br />40 <br />3488.3 <br />978.3 <br />50 <br />2601:1 <br />562.8 <br />50 <br />3035.8 <br />754.6 <br />50 <br />3499.7 <br />984.3 <br />!49 <br />2611.2 <br />560.9 <br />56 <br />3046.5 <br />759.6 <br />63 <br />3511,1 <br />990.2 <br />10 <br />2621.2 <br />571.1 <br />- 10 <br />3057.2 <br />764.6 <br />'10- <br />3522,6 <br />996.2 <br />20 <br />2631.3 <br />575.3 <br />20 <br />3067.9 <br />769.7 <br />20' <br />3534.1 <br />1002.3 <br />30 <br />2641.4 <br />579.5 <br />30 <br />3078.7 <br />774.7 <br />30 <br />3545.6 <br />1008.3 <br />40 <br />2651:5 <br />583.8 <br />40 <br />.3089.4 <br />779.8 <br />40 <br />3557.2 <br />1014.4 <br />50 <br />2661.6 <br />588.0 <br />`50 <br />3100.2 <br />784.9 <br />50 <br />3568.7 <br />1020.5 <br />Corrections to be Added (T =Tangent. _ E= External.) <br />ti <br />TAsrnl L _ Tangents and Externals to a P Curve, <br />Chord =100 ft. <br />Angle <br />Curve 5° <br />10° <br />15°; 20° 25°• 30' 35° 40° 45° <br />60° 65° 70° <br />Anglo <br />Angle <br />Tangent <br />External <br />64° <br />3580.3 <br />T= 13 <br />.26 <br />.40 .53 .67 .80 .93 .106 1.20 <br />1.64 1.79 1.94 <br />40° <br />E =.023 <br />'.046 <br />.070 .093 .117 .141 :172 .203 .234 <br />T1.341.49 <br />200 .31541 <br />1032.8 <br />15 <br />30 <br />.44 ".60 .76 •.91 1.06 1.21. 1.37 <br />1.87 2.04 2.21 <br />45° <br />E=.030 <br />.060 <br />.093 .119 .153 .154 .216 .254 .289 <br />.378 .411.29 <br />••20- <br />4112.1 <br />1322.9 <br />1.227 1.266 .19 1.305 .36 1 .54 <br />.72 .01 2.467 .10 2 .48 <br />2.550 <br />50°' <br />E =,037 <br />075 <br />.116 151 .189 345 <br />508 <br />4124.8 <br />T=.19 <br />30 <br />.76 .95 1.14 1.32 1.52 1.72 <br />1.92 2.14 2.35 2.562.77 <br />55°. <br />E=,046 <br />1051.4 <br />42 .188 .236 .283 .332 3.51 .420 <br />.479 .530 .582 .641 •7�83 <br />1337.7 <br />40 <br />4695.2 <br />1 .05 1.340 .27 1.398 49 1 .71 1 <br />2.575 .17 2038 .38 2.697 .60 2 <br />3 <br />60° <br />E=058 <br />4,38.57 <br />68 .225 283 457 516 <br />774 8'''1 <br />50 <br />4709.2 <br />1686.9 <br />1343 .16 1 <br />1.453 1 2.825 <br />13 3.39 <br />38 2.63 2.8 13 <br />? 3922 1.0 11 <br />65° <br />E46 <br />�.067 <br />4162.8 <br />04 273 412 554,.88 <br />B97 711 845 <br />ti <br />TAsrnl L _ Tangents and Externals to a P Curve, <br />Chord =100 ft. <br />Angle <br />Tangent <br />External <br />Angle <br />Tangent <br />External <br />Angle <br />Tangent <br />External <br />64° <br />3580.3 <br />1026.6 <br />71° <br />4086.9 <br />1308.2 <br />78° <br />4639.8 <br />1643.0 <br />101 <br />3591.9 <br />1032.8 <br />10' <br />4099.5 <br />1315.6 <br />10' <br />4653.6 <br />1651.7 <br />20 <br />3603.5 <br />1039.0 <br />••20- <br />4112.1 <br />1322.9 <br />20 <br />4667.4 <br />1660.5 <br />30 <br />3615.1 <br />1045.2 <br />30 <br />4124.8 <br />1330.3 <br />30 <br />4681.3 <br />1669.2 <br />40 <br />3626.8 <br />1051.4 <br />.40• <br />4137.4 <br />1337.7 <br />40 <br />4695.2 <br />1678.1 <br />'50 <br />3638.5 <br />1057.7 <br />50 <br />4150.1 <br />1345.1 <br />50 <br />4709.2 <br />1686.9 <br />65- <br />3650.2 <br />1063.9 <br />72 <br />4162.8 <br />1352.6 <br />•79 <br />4723.2 <br />1695.8 <br />10 <br />3661.9 <br />1070.2 <br />10 <br />4175.6 <br />1360.1 <br />10 <br />4737.2 <br />1704.7 <br />20 <br />3673.7 <br />1076.6 <br />20 <br />4188.5 <br />1367.6 <br />20 <br />4751.2 <br />1713.7 <br />30 <br />3685.4 <br />1082.9 <br />30 <br />4201.2 <br />1375.2 <br />30 <br />4765.3 <br />1722.7 <br />40 <br />3697.2 <br />1089.3 <br />40 <br />4214.0 <br />1382.8 <br />40 <br />4779.4 <br />1731,7 <br />50 <br />3709.0 <br />1095.7 <br />50 <br />4226.8 <br />1390.4 <br />50 <br />4793.6 <br />1740.8 <br />66 <br />3720.0 <br />1102.2 <br />73 <br />4239.7 <br />1398.0 <br />'86 <br />•4807.7 <br />1749.9 <br />10 <br />3732.7 <br />1108.6 <br />-- 10 <br />4252.6 <br />1405.7 <br />10 <br />4822.0 <br />1759.0 <br />20 <br />3744.6 <br />1115.1 <br />20 <br />4265.6 <br />1413.5 <br />20 <br />4836.2 <br />1768.2 <br />30 <br />3756.5 <br />1121.7 <br />30 <br />4278.5 <br />1421.2 <br />30 <br />4850.5 <br />1777,4 <br />40 <br />3768.5 <br />1128.2 <br />40 <br />4291.5 <br />1429.0 <br />40 <br />4864.8 <br />1786,7 <br />50 <br />3780.4 <br />1134.8 <br />50 <br />4304.6 <br />1436.8 <br />50 <br />4879.2 <br />1796.0 <br />67 <br />3792.4 <br />1141.4 <br />74 , <br />4317.6 <br />1444.6 <br />81 <br />4893.6 <br />1805.3 <br />•. 10 <br />3804.4 <br />1148.0 <br />10 <br />4330.7 <br />1452.5 <br />10 <br />4908.0 <br />1814.7 <br />20 <br />3816.4 <br />1154.7 <br />20 <br />4343.8 <br />1460.4 <br />20 <br />4922.5 <br />1824.1 <br />30 <br />3828.4 <br />1161.3 <br />•30 <br />4356.9 <br />1468.4 <br />30 <br />4937.0 <br />1833.6 <br />40 <br />3840.5 <br />1168.1 <br />40 <br />4370.1 <br />1476.4 <br />4951.5 <br />1843.1 <br />50 <br />3852.6 <br />1174.8 <br />50 <br />4383.3 <br />1484.4, <br />,40 <br />50 <br />4966.1 <br />1852.6 <br />68 <br />3864.7 <br />1181.6 <br />75 <br />4396.5 <br />1492.4 <br />82 <br />4980.7 <br />1862.2 <br />10 <br />3876.8 <br />1188.4 <br />10 <br />4409.8 <br />1500.5 <br />10 <br />4995.4 <br />1871.8 <br />20 <br />k <br />3889.0 <br />1195.2 <br />20 <br />4423.1 <br />1508.6 <br />20 <br />5010.0 <br />1881.5 <br />80 <br />3901.2 <br />1202.0 <br />30 <br />4436.4 <br />1516.7 <br />30 <br />5024.8 <br />1891.2 <br />40 <br />3913.4 <br />1208.9 <br />40 <br />4449.7 <br />1524.9 <br />40 <br />5039.5 <br />1900.9 <br />50 <br />3925.6 <br />1215.8 <br />50 <br />4463.1 <br />1533.1 <br />••50 <br />5054,3 <br />•1910.7 <br />69. <br />'3937.9 <br />1222.7 <br />76- <br />4476.5 <br />1541.4 <br />83 <br />5069.2 <br />1920.3 <br />10 <br />3950.2 <br />1229.7 <br />10 <br />4489.9 <br />1549.7 <br />5084.0 <br />1930,4 <br />'20 <br />3962:5 <br />1236.7 <br />20 <br />4503.4 <br />1558.0 <br />-10 <br />20 <br />5099.0 <br />1940.3 <br />30 <br />3974.8 <br />1243.7 <br />30• <br />4510.9 <br />1566.3 <br />30 <br />5113.9 <br />1950.3 <br />40 <br />3987.2 <br />1250.840 <br />4530.4 <br />1574.7 <br />40 <br />5128.9 <br />1960.2 <br />50 <br />3999.5 <br />1257.9 <br />50 <br />4544.0 <br />1583.1 <br />50 <br />5143.9 <br />1970.3 <br />10 <br />4611.9 <br />1265.0 <br />77 <br />4557.6 <br />1591.6 <br />84" <br />5159.0 <br />1980.4 <br />10 <br />4024.4 <br />1272.1 <br />- 10' <br />4571.2 <br />1600.1 <br />^10 <br />5174.1 <br />1990.5 <br />20 <br />4036.8 <br />1279.3 <br />20 <br />4584.8 <br />1608.6 <br />20 <br />5189.3 <br />2000.6 <br />30 <br />4049.3 <br />1286.5 <br />-•30 <br />4598.5 <br />1617.1 <br />30 <br />5204.4 <br />2010.8 <br />40 <br />4061.8 <br />1293.6 <br />40 <br />4612.2 <br />1625.7 <br />40 <br />5219.7 <br />2021.1 <br />50 <br />4074,4 1 <br />1300.9 <br />50 <br />4626.0 <br />1634.4 <br />50 <br />5234.9 <br />2031.4 <br />Corrections to be Added (T =Tangent. E=External.) <br />Angle Curve 5° 10° 15° 20° 25° 30° 35° 40° 1 45° 50° 1 55° 60° 65° 700 <br />000 T=.21 ..42 .63 :84 1.05 1.27 1.49 1.71 1.94 1.17,5,2:186 2,60 2.83 3.07 <br />E=.056 .112 .168 .225 .283 ,340 .398 .457 .516 .5 63 .697 ,774 ,851 <br />65° T=:23' .46 .69 .93 1.16 1.40 1.64 1.88 2.13 2.38 2.63 2.88 3.13 3.39 <br />E =.067• .135 .204 .273 .343 .412 .483 .554 .625 .697 .711 .845 .922 1.01 <br />700 T=.25 .51.76 1.02 1.28 1.54 1.80 2.06 2.33 2.60 2.88 3.16 3.44 3.72 <br />E=.080 .159 •240 .321 .403 .485 .568 .652 .735 .819 .906 .994 1.08 1.17 <br />75°T =.27- .56 .83 1.12 1.40 1.69 1.98 2.27 2.57 2.87 3.16 3.47 3.78 4,09 <br />E=.095 182 -.286 .383 .480 .578 .678 .777 .877 .977 1.07 1.18 1.29 1.39 <br />80o T=.30 81 .91 1.22 1.53 1.84 2.15 2.46 2.78 3.10 3.44 3.78 4.12 4.46 <br />E =.110 .220 .332 .445 .558 .671 .787 .90311:02 1.13 1.25 1.38 1.50 1.62 <br />95.- - T=.33 66 1.00 1.33 11.68 ,2 .02 2.36 2.70 3.05 3.40 3.77 4.14 4.55 4.89 <br />E=.128 259 .391 .524 .657 .79 .92 1.06 1.20 1.34 1.47 1.82 1.76 1.91 <br />ry <br />