SUPERSTRUCTURE.
Timber work 273
Rail section 276
Chairs and joints 282
Frogs 290
Switches 294
Sidings and crossings 298
Elevation of exterior rail 298
CHAPTER XIII.
Handbook of Railroad Construction; For the use of American engineers. Containing the necessary rules, tables, and formulæ for the location, construction, equipment, and management of railroads, as built in the United States. · 第 13 / 19 章