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The Pamphlet Collection of Sir Robert Stout: Volume 50

Lecture X. — Bridges

Lecture X.


Important to understand the history of the subject.—May be considered historically, constructively, or materialistically.—Timber Bridges: Piling not understood at Babylon—Pons Sublicius at Rome—Cæsar's timber bridge on the Rhine—Trojans' bridge over the Danube—Romans good carpenters—Roman stone bridges built on framed centreing—Early British timber bridge over the Thames—Swiss timber bridges with elaborate systems of trussing—Schafthausen and Wittingen—American timber arched bridges—Schuylkill bridge—Laminated arch bridges—Danger of fire—Indian system of bracketting—Bridge over the Chundra, in the Himalayas—American trussed timber bridges—Examples of the Howe truss—Height of piers—McCallum truss—Objections to timber bridges—Timber construction specially applicable to bridges over Canterbury rivers.—Stone Bridges: The Romans great bridge builders—Italy has taken the lead in bridge building in modern times—Bridge building at a low ebb in England until the last century—Sketch of the rise of modern bridge building in England—Rubble arches—Pon-y-tu-Prydd bridge—Claix bridge over the Dac, built in sections—Comparison of bridges built in ashlar masonry and in concrete—St. Lucens, built of masonry, cost. £140 per foot run.; Vevey, built of concrete, cost £26 per foot run.—Suggestions for concrete bridge building—Stone bridges in Cambodia built on the Eastern system of bracketting.