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1' <br />r <br />I <br />a <br />TABLE V —huddle Ordinates for PRII9 <br />Dog <br />Curve <br />LENGTH OF RAILS <br />I Dag <br />Carve <br />7rTCT11 OF RAILS <br />32 130 12S <br />26 <br />24 <br />22 <br />120 <br />92 <br />30 <br />29 <br />26 <br />124 <br />22 <br />I YO <br />10 <br />032 030 01- <br />Olo <br />Ola <br />011 <br />009 <br />160 <br />3A <br />313 <br />273 <br />230 <br />200170 <br />139 <br />2 <br />041 039 034 <br />030 <br />021 <br />031 <br />017 <br />17 <br />d,S <br />333 <br />290 <br />212 <br />213 <br />160 <br />149 <br />3 <br />03- 0-9 0,1 <br />014 <br />035 <br />032 <br />036 <br />15 <br />400 <br />3,1 <br />406 <br />26-, <br />22* <br />190 <br />156 <br />4 <br />OSO 0-9 068 <br />019 <br />OaO <br />042 <br />035 <br />19 <br />423 <br />371 <br />d24 <br />280 <br />239 <br />201 <br />165 <br />5 <br />112 033 OS6 <br />074 <br />064 <br />053 <br />044 <br />20 <br />441 <br />302 <br />341 <br />290 <br />2aO <br />212 <br />174 <br />6 <br />134 119 103 <br />088 <br />07a <br />063 <br />0-)3 <br />21 <br />466 <br />410 <br />Rol <br />dO9 <br />262 <br />222 <br />132 <br />7 <br />lab 1,1 120 <br />103 <br />098 <br />074 <br />001 <br />22 <br />487 <br />430 <br />375 <br />325 <br />275 <br />2d9 <br />191 <br />8 <br />1 9 lbi 137 <br />119 <br />100 <br />084 <br />070 <br />21 <br />509 <br />40 <br />390 <br />338 <br />2S7 <br />243 <br />199 <br />9 <br />301 177 I. <br />199 <br />118 <br />090 <br />078 <br />24 <br />ail <br />469 <br />409 <br />3a4 <br />299 <br />30 <br />209 <br />10 <br />223 190 171 <br />147 <br />126 <br />loo <br />097 <br />25 <br />w2 <br />496 <br />424 <br />36- <br />911 <br />263 <br />216 <br />1116824-) <br />216 168 <br />162 <br />13S <br />116 <br />006 <br />26 <br />179 <br />006 <br />441 <br />382 <br />121 <br />274 <br />225 <br />12 <br />266 Ma 20a <br />177 <br />111 <br />127 <br />10a <br />27 <br />094 <br />124 <br />4o7 <br />396 <br />1h <br />294 <br />233 <br />I 3 <br />290 354 233 <br />193 <br />163 <br />139 <br />119 <br />28 <br />G19 <br />)45 <br />475 <br />411 <br />943 <br />294 <br />242 <br />14 <br />312 2 1 239 <br />20' <br />17a <br />149 <br />122 <br />29 <br />639 <br />164 <br />401 <br />424 <br />961 <br />d03 <br />210 <br />15 <br />334 29a 2a7 <br />223 <br />188 <br />log <br />131 <br />30 <br />660 <br />oS3 <br />509 <br />43S <br />3-4 <br />313 <br />24 <br />CUR4E FORMULE, 1� <br />T = RO tan ,T <br />oT I R = T cot ' 1 Chord def =_chord 2 ' <br />Sin D R= 50 It <br />Sin D = 50 Sin D No chords = 1 <br />R E= R ex sec $ I D <br />Sin D = 50 tin 'I <br />T E = T tan +I Tan def = chord def <br />The square of,any distance, divided by tulce the radius, will equal the i <br />distance from tangenti to curse, fiery nearll <br />Table IV contains Tangents and Eaternils to a 10curse Tan and Ext <br />to In) other radius inai, be found, nearli enough, bt di%iding the Tan or 1 <br />Eat '+nposlte the given central angle by the given dl,gico of curio <br />To find Deg of Cuiie, having the Central Angle and Tangent Divide <br />Tail upposite the given Central Angleby the given Tangent <br />To find Deg of Curie, having the Central Angle and External Divide <br />Ext opposite the gllen Central Angle by,the given`External <br />To filed Nit Tan and Nat Ex See for any angle by Table N Tan <br />or Ext of twice the gnan angle dnided by the radius of a 10 curve will be <br />the Nat Tan or Nat 1Ex Sec <br />To find angle foi a given distance and deflection ° <br />Rule 1 Multiply the gn an distance by 01715 (def for 10 for 1 ft), and <br />divide given deflection by the product <br />Rule 2 Multiply gil en 7deflection by 57 3, and divide the product by <br />the given distance „ ' <br />To find deflection for a given angle and' distance Multiply the angle <br />b3 01745, and the product by the distance' , <br />RIGHT ANGLE TRIANGLES — Square the altitude, divide b3 twice the base <br />Add quotient to base for h3pothenuse <br />Gnen Base 100, Alt 10 102-200= 5 100- 5=100 5 hyp , <br />GilenHyp 100, Alt 25 2, -*-200=3 125 100-3 123=96 875—Base I <br />Error in first example, 002, in last, 045 <br />Zo fwd Tons of Rail is one mile of track multiply weight per yard <br />by 11 'and dilide b) 7 <br />� 7 <br />�r <br />, <br />P5 <br />