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S 3 y,-L— 3 7 <br /> — `. <br /> CURVE MILES, 3 <br /> - - - =------ - - --- by NES. <br /> NOW TO, BCURVE <br /> asz�as. <br /> Tsble I. contains Tangents and gxternah to a 1°anrve.. Tan.and <br /> to=W'otherradius be no by �biYdi �ft theTan. <br /> t.. 'to the given CCeenn44 <br /> ----- ----- —- -_. ____ o iiud Deg. of ' v having to t A is SM <br /> Ta t: <br /> �y <br /> Divide Tan.Aud . 'te a Ven C4 t the t. <br /> oPl?� <br /> --- - - —--- — - - Divide . °f the t.`ew a as : <br /> oopppoedte the a'ven Cea Angle the External. <br /> To dad hint.Tan.and Dist.:Mr., #os►sn a TAbl#I.:Tan. <br /> _ --- --- _-- -- ----- -- er lkt.of twfee the gid sI`d lir the,ra s:Y`cur"will <br /> be he Nat.Tan.or Naar Fes.Sec. , <br /> ------- --- Wanted a Curve with an Fact.of about 12 ft., <br /> .t of Intersection or L P.-230 20' to the R at <br /> 542+72• 3 <br /> Ext.in Tab. I oppos'te 230 w—120$7 S,, <br /> - -- - _. - ----- -- `!ft 120.87+12x•1 .007. say a 10°Curve. <br /> --- s • 3 Tan.In Tab. I opt.23°20'-1183.1 <br /> Ji,y 1183.1+10118.31: <br /> Correction for A.28'20'for a 10°Cyr.•aid <br /> rim• -_. — ,¢p - _--- 118.31+0.16-118.47-corrected Tangent. <br /> (If corrected Ext.is required find in same way) <br /> 37G/ Ang.23°20'-23.33 +10-2AM-L:C. a yf <br /> ' 2°19}'-def.for eta. 642 I. P.-sta. 642- 74 <br /> 4°49}'- r a a ♦60 Tan.- 1 .18.47 <br /> - — — 70 19}' a a a b43 <br /> S �0 ---- -- --- 9°49j'- a a a +50 B,C.leta. 641-}b8.68 <br /> 1104(Y- « a « 5a+ L.C.- 2 .33.33 l T Q <br /> _3}.3 <br /> sass E.c.«.Sta. 50+8&M � 5ZJ <br /> — - -_ -- 100-68.63+46.47XX(def.for 1 ft.ot''10°Cur.)-139x41'-j <br /> Z°191'-def.for stn.642. <br /> Def.for 50 ft.-2°80'for a 10°Curve. <br /> - 1� - - -- -- ----- -- Y 3 y Def.for 86.86 ft.-1°60}'for a 10°Curve <br /> XA 67 <br /> AY <br /> de <br /> • <br /> Op <br />