Which one of the following statements about “beams” is false?

Question

A) Most structural elements of a wing, like spars, ribs and stringers, are beamlike elements.
B) In a truss (beam) the diagonal struts are used to transfer vertical forces.
C) The flanges of a sheet metal beam are used to transfer shear forces.
D) A beam has three main elements: two flanges and a web plate.

Answer 1

The false statement among the provided options is:

C) The flanges of a sheet metal beam are used to transfer shear forces.

While flanges provide structural support and resist bending moments, it is primarily the web of the beam that carries shear forces. The flanges resist bending stress, while the web handles shear stress in a beam.