IRON BRIDGES.
Nature and strength of iron 192
Classification of iron bridges 194
Iron truss frames 195
Suspension bridges 203
Boiler plate bridges 223
CHAPTER IX.
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 9 / 19 章