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Q: Why used Pratt type trusses in bridge?
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Why are trusses are so useful in structures?

With trusses you can obtain high strength of the bridge using rather thin and simple (i.e. cheap) elements. A drawback is that the required height of the side of the bridge rises with the span of the bridge, so trusses become less effective for larger spans compared to the cable bridges. Railway bridges have to sustain higher load than road bridges (trains are heavier), so trusses are an efficient design to increase strength.


What materials are used to build a cantilever bridge?

The materials that are used to build a cantilever bridge are typically structural steel, iron, and also prestressed and reinforced concrete. The materials listed create the multiple parts of the bridge. These include the trusses, vertical columns, box girders, and most importantly, the cantilever itself.


Who invented the truss bridge?

Caleb and Thomas Pratt invented the truss bridge in 1844. Some of the materials that have been used in truss bridges are timber, steel, reinforced concrete, and iron.


Which type of engine is used by F-16?

Pratt & Whitney F100 turbofan engine


How can we build a bridge to connect islands What kind of bridge and why How can we design a bridge using light materials that can withstand maximum weight ensuring lowest cost possible?

Also those questions:What is the properties of materials used in the construction of a bridge?• What is strength factor in a bridge and its dependents?• How can we increase the strength factor of our bridge?Note the bridge choose should from these 4 types:a) Trusses b) Suspension Bridge c) Beam Bridge d) Arc BridgeThank you


What type of electrical bridge can be used for the measurement of dielectric loss of a capacitor?

Schering bridge


What is the most commonly used type of bridge?

Some say it is the suspension bridge, others say it is the arch bridge.


What type of triangle is used in a bridge?

elias and steven


What type of bridge is used to segment network traffic for the purpose of reducing bottlenecks?

Local Bridge


Why you need trusses?

Roof trusses are used to support the roof and to make certain that the weight of the roof is distributed equally across the building for maximum support.


What is the suspension bridge made out of?

Truss Bridges=Trusses have been used extensively in bridges since the early 19th Century. Early truss bridges were made of wood.==in additon the classic American covered bridges are all trusses, though the wooden truss members are covered by walls and a roof, for protection from the elements. Later truss bridges were made of cast iron and wrought iron. Most modern trusses are made of structural steel.=


What is a piezo bridge?

A piezo pickup is the type of pickup most commonly used in acoustic-electric instruments. This type of pickup is normally placed in or near the bridge of the instrument thus making it a piezo bridge.