Correct option is B
A drop panel is a thickened portion of the slab around the column to enhance the shear strength and reduce the punching shear stress. It is an integral structural component in flat slabs, where slabs are directly supported by columns without the use of beams.
Purpose of drop panels:
Increase the punching shear capacity around the column.
Reduce deflection in the slab.
Improve the load-carrying capacity of the slab-column junction.
In systems like grid floors, flat plates, or slab-beam systems, drop panels are not typically used as beams or other structural elements provide shear and bending resistance.
