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IMPROVED TABLES <br /> n of <br /> f 915/ 1 /w �/ '� 1G.�7 <br /> oo 7 3 y. �= A N D <br /> 0 f - INFORMATION �� �'° <br /> Y4f !1 .9 / Jw0 <br /> .1'�Q <br /> LS 16' <br /> x 7 W <br /> 47 <br /> K; 6 <br /> + ;G . <br /> a / r p <br /> CURVE FORMULAS <br /> / / • a, f1 9os 363 <br /> ue l) of Carve D and sin. (2) <br /> Tangetat-=T=4Uant(3) Leackh of Curvv=I�--100n(4) <br /> o 6 3 Middle ordmxie:-M = 1-1C".1) (b)-Rvers°ir(6) <br /> 0 8 Ezter�aal� 'tun -C7�=R+cos4---R(8)=Rexueo-i(10) <br /> r <br /> 3 .0 s1,107 <br /> I. J Long Ch ;C sin:a (10) &==Central Angle <br /> EXPLANATION AND USE,OF TAB <br /> Stations.--*tGivI S <br /> en• P. ta. 161+60.35 to find iota.'of P. C. <br /> gq t ----Z s+ 7 'r / and P. T. ® 2o 10',D-8* 2A'. From Table IV for 1 curve T-= <br /> .1 S 3464.1 and-a X41#r!9 ft. Fm Table V correction" or Ta <br /> 3' '3 G 3.g <br /> 7,7 414.86 ft. P. . Sts. P.I.-1Lw57 +45.50. Also from '(4) L= <br /> f — s 71' :Q. M00 and P. to P.C.+L-164+91.50, <br /> 1 3 / / Offsets.=Tan*ent offsets vary (approximately) directly with <br /> r - r D and with once of the dime. Thus tangent offset for Sta. <br /> 7,7 3 Y / 158 on above is 2.111 h 218found as fo From.Table III tA-wnt, <br /> d <br /> offset for"100 .�70 ft. 16&-8ta. P C.�+64. • hence <br /> v= . offset=�l27 (5�l.lftft-i0 ' p s9uare of distance <br /> 0 3 L 7 rf 'i'li 01.+(2 <br /> . ( 888.28) <br /> S,r 3 g divided'by twice a us t*b (ap roxitoatelY) the se from <br /> - '� 2 y ? y _ tangent to curve. 54.58 -k 2 x =2.16 ft. <br /> ? 4,2 4, �� r. !3. 9 Deflections.—Deflection an ilex D for 100 ft., D for 50 ft., ` <br /> f a _ v 7 etc. For a ft.--(in minutes) .3?i x °or-4defl. for 1 t. Table <br /> ix A 3 f II x C. For Sta. 15$ of abiwo curve=8 x 54.5 x 8Kw+�W or <br /> 2" 16.21, dt�2M x 84.5 136.2''IMm Table III. For Sta. IitD deAec- <br /> J' tion a�le.�°X6.2'f 8°20' -f fib°28.21,eta <br /> Gr' i q <br /> for curve alBstetais, -llday;be found' r�milar taxa. us <br /> ive is M. Foo 11 m Table nto 6 <br /> °cu ► <br /> for r 2I104w--81 .+115.27 from T", none' 10 or <br /> E=11527 ft. �r on' p and E is mieaeuted-and found to be <br /> �Di b 0 b What is DI T LV F8.9 and +42.�b or D•• <br />