HOW TO DETERMINE HOW MANY ROD REQUIRES FOR A 10’6″ X 12’6″ FOOTING.

How to determine how many Rod requires for a 10’6″ x 12’6″ footing?Rod spacing 3inch in both side.

Answer:
Rod required=10x12/spacing=120/3=40 nos, Rod required=12x12/spacing=144/3=48 nos.
(3″ covering deduction from both side)