What is the advantage of making bridges in the form of I shape?

Bridges should be constructed in such a way that it does not bend too much or break under the load of traffic or its own load.

What is an I beam used for?

I beam is a shape of structural steel used in buildings and it is also known as H, W, wide, universal beam, or rolled joist. They are designed to play a key role as a support member in structures. These beams have the capacity to withstand various types of loads.

Why are beams used in construction?

Beams primarily carry vertical gravitational forces. They are also used to carry horizontal loads (e.g., loads due to an earthquake or wind or in tension to resist rafter thrust as a tie beam or (usually) compression as a collar beam). In light frame construction, joists may rest on beams.

Why is it important to design the shape of a beam?

The shape of the cross section of the beam is important too; the depth of the beam is more important than width for resisting bending. It can be proved that the bending strength increases proportionally to the square of the depth but only in direct proportion to the breadth.

Why is an I-beam stronger than a solid beam?

On the other hand, if 2 beams have the same cross-sectional area, then the one with this area distributed in an I-beam shape will be much more spread out with much larger outer dimensions than the compact rectangular section. And this makes the I-beam MUCH stronger.

Which of the following is an advantage of I shaped beam?

2. Compared with general section steel, it has the advantages of low cost, high precision, low residual stress, no expensive welding materials and weld detection, and saves about 30\% of the manufacturing cost of steel structure.

Why concrete beams used in large buildings have greater depth than breadth?

Why depth of beam is greater than its width? to resist the bending moment caused by transverse loading acting on beam, depth of beam (parallel to the loading plane) is to be increased. Increasing width can also provide large MoI but that will not be economical to do. That’s why beams have depth more than width.