. Railroad construction. Theory and practice. A textbook for the use of students in colleges and technical schools. By Walter Loring Webb . <2R-d^^n\d-g), (115) Fig. 149. This equation shows the value ofi?, which renders this case possiblewith the given values of n^ c/, andg. (b) ip may be greater than before (see Fig. 150) 2^ — <i : 6? — ^ :: cot -J^ : tan Ji^; 2n{cl - g) § 274. SWITCHES AND CROSSINGS. the same as Eq. 112, but rJ^ig^{R -ig) sin tp sin {ip — F) 293 . (116). Fig. 150. 274. Crossover between two parallel straight tracks. (SeeFig. 151.) The turnouts are as usual. The c
. Railroad construction. Theory and practice. A textbook for the use of students in colleges and technical schools. By Walter Loring Webb . <2R-d^^n\d-g), (115) Fig. 149. This equation shows the value ofi?, which renders this case possiblewith the given values of n^ c/, andg. (b) ip may be greater than before (see Fig. 150) 2^ — <i : 6? — ^ :: cot -J^ : tan Ji^; 2n{cl - g) § 274. SWITCHES AND CROSSINGS. the same as Eq. 112, but rJ^ig^{R -ig) sin tp sin {ip — F) 293 . (116). Fig. 150. 274. Crossover between two parallel straight tracks. (SeeFig. 151.) The turnouts are as usual. The crossover track maybe straight, as shown by the fulllines, or it may be a reversedcurve, as shown by the dottedlines. The reversed curve short-ens the total length of track re-quired, but is somewhat objection-able. The first method requiresthat both frogs must be second method permits un-equal frogs, although equal frogsare preferable. The length ofstraiglit crossover track is F^ T. F^Tsin F,+gcosF, = d-g,
Size: 1800px × 1388px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., book, bookcentury1900, bookdecade1900, bookpublishernewyorkjwiley
