RCC Structures Design
Pick up the assumption for the design of a pre-stressed concrete member from the following:

During deformation limits, Hook's law is equally applicable to concrete as well as to steel
Variation of stress in reinforcement due to changes in external loading is negligible
A transverse plane section remains a plane after bending
All listed here

ANSWER DOWNLOAD EXAMIANS APP

RCC Structures Design
Based on punching shear consideration, the overall depth of a combined footing under a column A, is

(Perimeter of column A × Safe punching stress)/(Load on column A × Upward pressure × Area of the column)
(Perimeter of column A × Safe punching stress)/(Load on column A + Upward pressure × Area of the column)
None of these
(Area of the column A × Safe punching stress)/Load on column A

ANSWER DOWNLOAD EXAMIANS APP