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.
George L. Vose
TENSION.
CROSS STRAIN.
COMPRESSION.
161. Wrought Iron
a
=
W
12,000,
Cast-Iron
a
=
W
25,000,
Wood
a
=
W
1,000.