Question

As per IS 8009 Part I: 1976, the influence factor for rigid square footing is:
1. 0.82
2. 1.00
3. 1.56
4. 2.20
5. 5.62

Answer 1

Correct Answer - Option 1 : 0.82

Explanation

The average value of the influence factor for flexible and rigid footings for different shape is given below:

Shape	Flexible Footing	Rigid Footing
Circle	0.85	0.88
Square	0.95	0.82
Rectangular
L/B = 1.5	1.2	1.06
L/B = 2	1.31	1.2
L/B = 5	1.83	1.70
L/B = 10	2.25	2.1