Depth of lean concrete bed placedat the bottom of a wall footing, is k

1.	Depth of lean concrete bed placedat the bottom of a wall footing, is kept
A.	10 cm
B.	15 cm
C.	equal to its projection beyond wall base
D.	less than its projection beyond wall base.
Answer» D. less than its projection beyond wall base.

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Depth of lean concrete bed placedat the bottom of a wall footing, is kept

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