As one third of the base
As one sixth of overall height of the wall
Equal to heel slab
Below ground surface
Answer is Right!
Answer is Wrong!
The correct answer is: A. As one third of the base.
The toe projection of a foundation slab is the distance from the face of the wall to the edge of the footing. It is typically taken as one-third of the base width of the wall. This helps to distribute the load of the wall more evenly over the soil and prevents the wall from sinking.
The other options are incorrect because:
- Option B: One sixth of the overall height of the wall is too small and would not provide enough support for the wall.
- Option C: Equal to heel slab is not correct because the toe projection is always less than the heel slab.
- Option D: Below ground surface is not correct because the toe projection must be above the ground surface to prevent water from seeping into the foundation.
I hope this helps!