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1 BOK <br /> F-5-4 3 . � u __ DIWGE 1'� �%4 RAILROAD : RVL <br /> S 3�2.e°3 o' r AND' <br /> RE.DUCT1ON TABLES <br /> QWAW.1914.byEuxa=MtumClo,NowYcrk GO <br /> d P <br /> i <br /> 5 Z3°,3 j.' 27V' — S 33' f!'3i" 2�7°O <br /> /3° 0 - 312 <br /> fd <br /> CURVE FORMULAS <br /> Radius=R,= 0 (1)Degree of Cum=D and sin.a=�(� <br /> Tsnxent=T=Rtan4(3)Length of Curve=L=100$(4) <br /> Idfddie ordin\ate=M— <br /> 3x Q x o Externed=E= 'tan4-(7'j= ec ) <br /> I,oa$ ►ortl=C=2 R yin. (IO),�-Central An6 <br /> EXPLANATION AND USE OF TABLES <br /> -Givaen P. I.—ata. 161+60.38 to 8�d $ta, of P.'C. <br /> { �pp�of� '' p �° 10' D-.$°201. From Table IV for I°curve Ta <br /> _ 8454A and+s%-414.49 ft. From Table v coriection�38 or.T= <br /> ` lFl4$b s>t. P. C.�Bta. P.Y.—Tc457+45.50. Also f (4) 1— <br /> r <br /> T1fa.Q0 land P.T. eta.P.C.+1,-164+91.50. <br /> fra"enb offsets vary (abprrc►ximate)l*) wf tli <br /> 'nA �.Aq�Mgd{ equate O! the dlstanee. Thus tangent oftSetr <br /> oace f+� m ft.6-7.27 ft. Distinoe�15"ta.P. C.-54.50a hence <br /> , 1�� �E TtiQ �- Cbz a <br /> q lb8 bo3►ecurvein116ft.found follows. From Table III tan <br /> 1 r c Bei-7.27 04,60+1©0?•4.16 ft. Also square of any SLstanoe <br /> divldlad by*vilestbe rads uab(aapppproximately)the dlst$nes from <br /> i tanggnb to`cnrm Thus ( +(2 x688:26)=2.18 ft. <br /> 0eftecdons.- Deflecdon aagk--* D for 100 ft . D for 50 ft. <br /> gpi c fL--On minutes).3 x0 X ormodefffor 1 .from Fable <br /> C . Ar 86L US of abev, ourve�.3 x WSX$ 138.2' or <br /> 1 .2;ox-i.59x&C5w*136.2' Table IYI. For£eta. 1:59,ddw. <br /> tion$moo-°.16.2'+8°.W+2—W=Z,eto. <br /> B LL--May be Bund in a m#w,manner toto Vnt& t$us <br /> $7 <br /> oaarvs above is 91. F #:qpQ Table IV for 1°cut"X964.6 <br /> from Ts�ble V 10 cr <br /> 1 .87 ft. Or sa�pose ,o�'nd a 4 nisesured and found to be <br /> 42 fL .Wbat is DY From'cable IY " .9 aad+42b <br /> t <br /> v <br /> i <br />