Triangels are the strongest shape so make a triple triangle design i aced it that way
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The plank bridge is the weakest as it is just a simple beam with no central support or stiffening for the span. The other two can be designed to comparable strength for a given span, but work in somewhat different ways: the truss bridge acts as a beam stiffened by the truss frames, the arch transmits the forces from the centre to its abutments.
The Truss Bridge design distributes the weight on the bridge evenly.
The Truss Bridge is the strongest.
Strong bridge designs that give very good support are made mostly of triangles.
Truss, it has better framework and more stable supports. Trust me, I tested them with popsicle sticks
well i really depends on how old the bridge is. the older it is the weaker it is.
The weakest type of bridge would be a board across gully.
Yes they are
There are many different lengths of suspension bridges.
The longest bridges in the world are viaducts or trestle bridges. It is easier to design a high, elevated roadway by directly supporting it with many towers or piers (as in a viaduct or trestle bridges). It is more difficult to design an elevated roadway with a large unobstructed span (as in a suspension bridge or arch bridge). However, the bridges with the longest unobstructed spans in the world are invariably suspension bridges, because ...
Because steel is stronger than wood. But I'm not sure steel is stronger than metal, but steel is a metal and a pretty tough one.
arch bridges can support more weight than beam bridges but for price i say beam won.
the cements,bricks and glasses makes bridges towers strong
they were not as strong
they were not as strong
Yes they are
strong wind from cyclops
i dont know but its strong
Truss bridges are lighter than beam girder bridges. They take up more height but are strong and carry loadd in tension and compression rather than bending.
the fact that you have to connect the two bridges and then the beams will need more support in order to stay strong.
It is light weight but it is strong because of the open.
Economical, easy to construct and repair, very strong.
well i really depends on how old the bridge is. the older it is the weaker it is.
To a limited degree, yes. However, very strong tornadoes will destroy just about any structure they hit, including truss bridges.