Question

The neutral axis of the reinforced beam passes through ____

• A. Centre of gravity of the concrete section
• B. Meta-centre of the concrete section
• C. Centroid of the transformed section
• D. Centroid of the concrete section

Hint:

For RCC sections, \[ \boxed{ \text{Neutral Axis} \rightarrow \text{Centroid of the transformed section} } \] where steel is converted into equivalent concrete using the modular ratio.

Answer 1

The Correct Option is C

Step 1: Recall the transformed section method. In reinforced concrete analysis, steel is transformed into an equivalent concrete area using the modular ratio.

Step 2: Locate the neutral axis. The neutral axis always passes through the centroid of the transformed section. Hence, \[ \boxed{\text{Neutral axis passes through the centroid of the transformed section}.} \] Therefore, \[ \boxed{(C)} \] is the correct answer.