The thickness of base slab of a retaining wall generally provided, is

[A].	one half of the width of the stem at the bottom
[B].	one-third of the width of the stem at the bottom
[C].	one fourth of the width of the steam at the bottom
[D].	width of the stem at the bottom
[E].	twice the width of the steam at the bottom.

Answer: Option D

Explanation:

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