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Four columns of a building are to be located within a plot size of 10 m × 10 m. The expected load on each column is 4000 kN. Allowable bearing capacity of the soil deposit is 100 kN/m2. The type of foundation best suited is
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- isolated footing
- raft foundation
- pile foundation
- combined footing
Correct Option: C
Expected load coming on each column = 4000 KN
No. of Column = 4
Total load coming from all column = 4 × 4000
= 16000 KN
In raft footing
Pressure coming to soil
| = | = | |||
| A | 10 × 10 |
= 160 KM/m2 > 100 KN/m2
Therefore, pressure acting downwards to soil is more than bearing capacity of soil, so the raft is not provided this condition.
So, go for pile foundation.
