Multiple choice

There are two footings resting on the ground surface. One footing is square of dimension 'B'. The other is strip footing of width 'B'. Both of them are subjected to a loading intensity of q. The pressure intensity at any depth below the base of the footing along the centerline would be

  1. equal in both footings

  2. large for square footing and small for strip footing

  3. large for strip footing and small or square footing
  4. more for strip footing at shallow depth ($\leq$ B) and more for square footing at large depth (>B)
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

 $\text{Large for strip footing and small for square footing}\\ L/b \text{ for square footing = 1}\\ L/b\text{ for strip footing = }\infty \\ \therefore \hspace{2.3cm}I_{strip}>I_{square}$

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