What are the advantages and the disadvantages of a beam bridge?

Answer 1

It is a disadvantage that the same reason Hay's bridge was created is the same reason it is not suitable for measurement of quality factor (Q<10) for Q<10. An advantage is that it is simple expression of the unknown inductor for high quality.

Answer 2

Advantages:

• Good for short spans;
• Wide distances can be spanned by resting beams on piers.

Disadvantages:

• Can be expensive, even for fairly short spans, because of the need to use steel. A cheap material for beam bridges is concrete, but concrete on its own, is not strong enough to stand up to high forces of tension (pulling), so concrete needs to be reinforced with steel mesh;
• Very expensive for long spans, because of need for piers to support the long beams;
• It is not always possible to build support piers.

Answer 3

Advantages: stable, cheap, and strong.

Disadvantages: Short, not good in earthquakes, and they need multiple supports.