The infinite sand slope shown in the figure is one the verge of sliding failure. The ground water table coincides with the ground surface. Unit weight of water
γw=9.81kN/m3.
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1204010/original_8q.png)
The value of the effective angle of internal friction (in degrees upto one decimal place) of the sand is
- 34.33