Question

The section in which concrete is not fully stressed to its maximum permissible value while stress in steel reaches its maximum value is called ____

• A. Under reinforced section
• B. Critical section
• C. Over reinforced section
• D. Balanced section

Hint:

Types of RCC sections: \[ \boxed{ \begin{aligned} \text{Under-reinforced} &\rightarrow \text{Steel yields first}\\ \text{Balanced} &\rightarrow \text{Steel and concrete reach limit together}\\ \text{Over-reinforced} &\rightarrow \text{Concrete crushes first} \end{aligned} } \]

Answer 1

The Correct Option is A

Step 1: Recall the behavior of an under-reinforced section. In an under-reinforced section, the steel reaches its yield stress before the concrete reaches its limiting compressive stress.

Step 2: Identify the correct section. Since the concrete is not fully stressed while the steel reaches its maximum permissible stress, \[ \boxed{\text{Under reinforced section}} \] is the correct answer. Hence, \[ \boxed{(A)} \] is the correct answer.