: an apparatus or structure (such as a drawbridge) in which one end is counterbalanced by the other on the principle of the seesaw or by weights.

How does a bascule work?

Bascule bridges have spans that pivot upward utilizing gears, motors and counterweights. Unlike vertical lift bridges, when opened, there is no vertical obstacle to river traffic. … The machinery for opening the bridge is located above the structure. The Burnside Bridge is a Strauss-type, double-leaf bascule bridge.

What is the meaning of bascule bridge?

bascule. / (bskjul) / noun. Also called: balance bridge, counterpoise bridge a bridge with a movable section hinged about a horizontal axis and counterbalanced by a weightCompare drawbridge.

What is the largest bascule bridge in the world?

the Erie Avenue Bridge During its construction, the Erie Avenue Bridge (as it was formerly called) was the largest bascule bridge in the world. …

Charles Berry Bridge
Official name Erie Avenue Bridge
Characteristics
Design Bascule
Location

What is a bascule in horse riding?

Bascule /bskjul/ is the natural round arc a horse’s body takes as it goes over a jump. The horse should rise up through its back, stretching its neck forward and down, when it reaches the peak of his jump. … This is often described as the horse taking the shape of a dolphin jumping out of the water.

What are the advantages of a bascule bridge?

The main advantage of a bascule bridge is its efficiency in operation. Bascule leaves are fast to raise and lower, and for the passage of small vessels, need only be raised to part height, thus speeding the operation still further.

What is the difference between a bascule bridge and a drawbridge?

A bascule bridge (also referred to as a drawbridge or a lifting bridge) is a moveable bridge with a counterweight that continuously balances a span, or leaf, throughout its upward swing to provide clearance for boat traffic. It may be single- or double-leafed.

Who invented hydraulic bridge?

Who invented the hydraulic bridge? Leonardo Leonardo designed and built designed and built bascule bridges within the 15th century. He also made designs and built models of swing and retractable bridges.

How is a bascule bridge made?

Bascule leaves 7 Two side girders are constructed for the heel section of each leaf of the bridge. A trunnion bearing is mounted in an opening in each girder. … The heel section is completed with a crossbeam connecting the two side girders. The counterweight is attached to the heel section.

What is the famous Bascule Bridge in London?

the London Tower Bridge Spanning the River Thames since 1894, the London Tower Bridge is one of the most recognizable bridges in the world. At the time, it was the largest and most sophisticated bascule bridge ever built providing full view of the city through a glass-enclosed walkway with museums in each tower house.

When was the bascule bridge built?

The first simple-trunnion bascule bridge utilizing his design was built over the Chicago River in 1902.

When was the Broadway Bridge built?

1911 Broadway Bridge / Construction started The Broadway Bridge was built in 1911-12, with a new approach added in 1927 and an old approach replaced by the City of Portland in 1999-2002.

What are the 5 jumping phases?

To understand how to achieve a better result without worrying about seeing strides, it’s helpful to break down jumping into five distinct phases: the approach, takeoff, in the air, landing, and getaway. You need to keep uppermost in your mind that all jumping revolves around two qualities: line and pace.

Why can horses jump so high?

In general, the deeper the horse flexes his hind legs during this support phase, the more power he stores in his hindquarters and the bigger the jump he produces. Over a very big jump, his hocks lower so much that the cannon bones in his hind legs are parallel to the ground.

What does jumping flat mean?

When a horse jumps flat, he’s more likely to knock poles because he’s not using his body properly to arch over the fence. Rhythm and straightness both play a huge part in attaining a good jump, but this simple exercise will encourage your horse to fold his front legs up over the fence.

What are the disadvantages of a bascule bridge?

Disadvantages of Bascule Bridge

What are common features of a bascule bridge?

A type of movable bridge, a bascule bridge contains one or two spans, one end of which is free and swings upwards. A counterweight at the pivoting end of the span or spans balances the weight as the free end rises.

What are disadvantages of drawbridge?

The only disadvantage of a lift drawbridge is height restriction. Since the height is restricted, the passageway hoist used with the bridge is generally far above the platform base.

Is there a famous movable bridge?

One of the most famous movable bridges in the world is Tower Bridge.

Is Tower Bridge in London a draw bridge?

Tower Bridge, movable bridge of the double-leaf bascule (drawbridge) type that spans the River Thames between the Greater London boroughs of Tower Hamlets and Southwark.

How long is the bascule bridge?

Mystic River Bascule Bridge
Total length 218 ft (66 m)
Width 85 ft (26 m)
History
Designer Thomas Ellis Brown

Who is the father of hydraulics?

Along with William George Armstrong, he can be considered one of the two fathers of hydraulic engineering. …

Joseph Bramah
Died 9 December 1814 (aged 66) Pimlico, London, England
Nationality English
Known for hydraulic press

Which is the first bridge in India?

Opened on 24 February 1914, it was India’s first sea bridge, and was the longest sea bridge in India until the opening of the Bandra-Worli Sea Link in 2010. …

Pamban Bridge
Locale Rameswaram, Tamil Nadu, India
Owner Indian Railways
Characteristics
Total length 6,776 feet (2,065 m)

Why is it called a viaduct?

The term viaduct is derived from the Latin via meaning road, and ducere meaning to lead. It is a 19th-century derivation from an analogy with ancient Roman aqueducts. Like the Roman aqueducts, many early viaducts comprised a series of arches of roughly equal length.

What is the bridge over a moat called?

A drawbridge or draw-bridge is a type of moveable bridge typically at the entrance to a castle or tower surrounded by a moat.