Correct option is B
The critical section for one-way shear in a reinforced concrete beam or slab is taken at a distance equal to the effective depth (d) from the face of the column or pedestal. This is based on standard design practices in reinforced concrete structures.
Important Key Points:
1. One-Way Shear:
· One-way shear refers to the vertical shear force acting along a single plane of a structural member, such as a slab or beam.
· It is a common shear failure mode in reinforced concrete members.
2. Critical Section Location:
· According to design codes (e.g., IS 456:2000 or ACI 318), the critical section for one-way shear is located at a distance d (effective depth) from the face of the supporting column, pedestal, or wall.
3. Effective Depth (d):
· The effective depth is the distance from the extreme compression fiber to the centroid of the tensile reinforcement.
4. Reason for the Location:
· At this location, the shear force is critical due to the redistribution of stresses near the support.
