wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

The percent reduction in the bearing capacity of a strip footing resting on sand under flooding condition (water level at the base of the footing) when compared to the situation where the water level is at a depth much greater than the width of footing, is approximately

A

0
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B

25
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C

50
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D

100
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is C
50
Terzaghi's bearing capacity equation
qu=CNc+q Nq+12B γ Nγ
For cohensionless soil, C=0 Footing resting on sand surface so, Df=0
When water level is at base of footing
qu1=12 B γsub Nγ
When water level is at much greater depth
qu2 =12 B γt Nγ
Percentage reduction in bearing capacity
=qu2qu1qu1×100
=γtγsubγt×100
As
γsub0.5γt
So, percentage reduction = 50%.

flag
Suggest Corrections
thumbs-up
1
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Bearing Capacity - Terzaghi Theory
FOUNDATION ENGINEERING
Watch in App
Join BYJU'S Learning Program
CrossIcon