Suspension-bridges Sentence Examples

The remains of a similar bridge exist at Janglache; but there are no wooden or twig suspension bridges over the Tsanpo.

One of the most interesting topics of study is the trails along which the seasonal and annual migrations of tribes occurred, becoming in Peru the paved road, with suspension bridges and wayside inns, or tambos.

In suspension bridges the principal members are in tension, and the introduction of iron link chains about the end of the 18th century, and later of wire ropes of still greater tenacity, permitted the construction of road bridges of this type with spans at that time impossible with any other system of construction.

On the other hand, suspension bridges require lofty towers and massive anchorages.

Iron suspension bridges began to be used at the end of the 18th century for road bridges with spans unattainable at that time in any other system.

Some suspension bridges have broken down in consequence of the oscillations produced by bodies of men marching in step. In 1850 a suspension bridge cable was carried on a separate saddle on rollers on each pier.

Since the erection of the Forth bridge, cantilever bridges have been extensively used, and some remarkable steel arch and suspension bridges have also been constructed.

For suspension bridges the abutment forming the anchorage must be so designed as to be thoroughly stable under the greatest pull which the chains can exert.

For flexible suspension bridges with wrought iron link chains, and dip = Ath of the span, the limiting span is 2800 ft.

For stiffened suspension bridges with wire cables, if the dip is 310th of the span the limiting span is 2700 to 3600 ft., and if the dip is *th of the span, 3250 to 4250 ft., according to the factor of safety allowed.

The true catenary is that assumed by a chain of uniform weight per unit of length, but the form generally adopted for suspension bridges is that assumed by a chain under a weight uniformly distributed relatively to a horizontal line.

A curious chain suspension bridge across the Merrimac, connecting Newburyport with Amesbury, was built in 1827, replacing a similar bridge built in 1810, which was one of the first suspension bridges in America.

A great part of the country, however, is still compelled to use the most primitive means of communication-mule paths, fords in the smaller streams in the dry season, and rude suspension bridges across deep gorges and swift mountain torrents.

In relation to the theory of suspension bridges the case where the weight of any portion of the chain varies as its horizontal projection is of interest.

Excellent suspension bridges span some of the larger rivers, made of interlaced rattan ropes secured to trees on opposite banks, so very similar to those seen in Sumatra as to suggest some Malay influence.

The Incas ' woven grass suspension bridges were strong enough to carry the Spanish army.

While Strauss played the role of Chief Engineer on the project and oversaw all final construction decisions, his relative inexperience with suspension bridges called for him to bring in an expert.

In addition, suspension bridges benefit from a deck truss, found beneath the bridge deck.