Which of the following beam cross sections is structurally more efficient in bending?
A)I- section
B)Rectangular (solid)section

Question

Quizplus · Accepted Answer

The I-section beam cross section is more efficient in bending as it has a greater moment of inertia compared to a rectangular (solid) section of the same area. The moment of inertia indicates the beam's resistance to bending and is directly proportional to the beam's stiffness. The I-section distributes the material towards the outer perimeter, increasing the distance of the material from the neutral axis, which augments the moment of inertia. Therefore, the I-section can carry more load with the same bending stress.

Which of the Following Beam Cross Sections Is Structurally More