RCC Structures Design
If the ratio of long and short spans of a two way slab with corners held down is r, the actual reduction of B.M. is given by

(5/6) (r²/1 + r²) M
(5/6) (r²/1 + r⁴) M
(5/6) (r/1 + r²) M
(5/6) (r²/1 + r³) M

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RCC Structures Design
The self-weight of the footing, is

Not considered for calculating the area of the footing
Also considered for calculating the upward pressure on footing
Not considered for calculating the upward pressure on footing
Both (b) and (c)

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