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l <br /> IFIELC ea >� 3 - - tjlr .GI;. s RAILROAD CURS <br /> AND <br /> REDUCTION TABLES' <br /> web % - a?Aot;M4.4,*49000 Dbwoen Co.,N_Yolk civ i <br /> E <br /> NA <br /> i <br /> Z4 ,� e e 11Ve r� 2. <br /> ccufty$ FQitMuL.A,S <br /> Raelius 60 <br /> =R= (1)Ihgm of Curve=D and aia.z=$0) <br /> Tit=T�Rt*at(3)Length of Curve=L=100 (4) <br /> Z <br /> Middle aedia�ates=Li=R(1--cos. �(b) =B.vere�(8) <br /> -_ F xW=X=TtaAA (7)=R+ca.�•,R(8)-R=8Gc#(9) <br /> }dw a 4 ! Long Chord=C=2 R sin.a(14)o=Central Angle <br /> EXPLANATION AND USS. OF TABLES <br /> I.•WSta. 181+60•�6 to And St. of P C. <br /> — ted 0' Dir 20: From',Tabl'e IV for l curve T= <br /> 84841•and+8 �14.4b ft. From,Fable V aon*Wo�,88 or T= <br /> 414,9 ft. F •Ots. P.I.—T-167+45ZQ. Also from (4) I� <br /> 74s.ao r.= .P.C.+L.,!.104+91.30. <br /> D sumTsftof t tta tt' d r Eta. <br /> .1 o s �s� .�- �o'� �,�, lf►d ah ebttve eprve is 2..16 t.foua as follows. Prom Tabde III teag�ent <br /> effee{ farms I f�.�7.27 it. Dletanoea�Ib��-�8ts.P.C.�4,88 hence <br /> .li0+100yy��=2.18 ft. .Alae► square of nap distance � <br /> � 1 Z 3 •1- _ 3 - '�i,�luoe-the radius squab(ap�mzimately)the di�sa�from ; <br /> t to gerve. Thus (54.60p+($•i fi88.�)�2.18 ft. <br /> ' �'De8eation sn �i D for 100 it., �D for b0 it., <br /> � ,� ____ �c. For' ft,�—�minutes).8 xG z TY ar�e9,for 14it.from Tab4e <br /> 7 1 _ i1i C +►�g,iota. 766 of shore a►trve••3.�84.b z 8 .138 7 or <br /> to Q° 1 .2# or�•�tf+lix i4.b••138 2'•froan Table III: per fBta. 1.1m de9ec- <br /> �� tion bn leaAfd!',18.28+W 2Q"+2Fww 26.2',efc. <br /> --1+4e�.lse lodmd stnritatrp� tp t agents. Thus <br /> g Ib carve above 1010. Forfmm`Tehia, of r curve If 96(►.8 <br /> lia'•.•Q60.$+991.27 avid from Table V awreotion+w.14 or <br /> ' Bk Q147 f'C. .f►reupposa L�°dd2""aid V is measured sad found to be <br /> - <br /> 42A. W}+at 3s DT Fraan,Tsbla IV I�� 4XQ and 4-42="-or D— <br /> y W 80'. <br /> i <br /> 1 <br />