File:Railroad construction. Theory and practice. A textbook for the use of students in colleges and technical schools. By Walter Loring Webb (1900) (14735886676).jpg

Identifier: railroadconstruc00webb (find matches)
Title: Railroad construction. Theory and practice. A textbook for the use of students in colleges and technical schools. By Walter Loring Webb
Year: 1900 (1900s)
Authors: Webb, Walter Loring, 1863-1941
Subjects: Railroads
Publisher: New York, J. Wiley
Contributing Library: The Library of Congress
Digitizing Sponsor: The Library of Congress

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
edisadvantao^es named above. Metal kevs or wooden wedges are O tJ CD sometimes used, but the majority of designs employ some formof bolted clamp. The form adopted for the experimental tiesused by the :N. Y. C. & H. R. E.R. (see Plate XYII) is especiallyingenious in the method used to vary the gauge or allow forinaccuracies of manufacture. Plate XYII shows some of themethods of fastening adopted on the principal types of ties. 222. Cost. The cost of metal cross-ties in Germany averagesabout 1.6 c. per pound or about $1.60 for a 100-lb. tie. Theties manufactured for the IST. Y. C. & H. P. P.P. in 1892weighed about 100 lbs. and cost $2.50 per tie, but if they hadbeen made in larger quantities and with the j^resent price ofsteel the cost would possibly have been much lower. Theitem of freight from the place of manufacture to the place whereused is no inconsiderable item of cost with some roads. Metal<jross-ties have been used by some street railroads in this country. PLATE XVIL
Text Appearing After Image:
Metal Ties. (Tofacfipnge2A(\ ) § 224. TIES. 241 Those used on the Terre Haute Street Kailway weigli GO poundsand cost about 06 c. for the tie, or 74 c. per tie with tliefastenings. 223. Bowls or plates. As mentioned before, over 12000miles of railway, chiefly in British India and in the ArgentineRepublic, are laid with this form of track. It consists essentially■of large cast-iron inverted bowls laid at intervals under eachrail and opposite each other, the opposite bowls being tiedtogether with tie-rods. A suitable chair is riveted or bolted onto the top of each bowl so as to properly hold the rail. Beingmade of cast iron, they are not so subject to corrosion as steelor wrought iron. They have the advantage that when old andworn out their scrap value is from 60 to 80^ of their initialcost, while the scrap value of a steel or wrought-iron tie ispractically nothing. Failure generally occurs from breakage,the failures from this cause in India being about 0.4 per centper annum. They we

Note About Images