RCC Structures Design
If jd is the lever arm and ΣO is the total perimeter of reinforcement of an R.C.C. beam, the bond stress at the section having Q shear force, is

Q/3jdƩO
Q/2jdƩO
Q/jdƩO
2 × Q/jdƩO

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

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