how can change 10mm dia @130c/c bar spacing to 8mm dia

Answer Posted / shanker singh devera

(d1)^2/spacing = (d2)^2/spacing
(10^2)/130 =(8^2)/x
100/130=64/x
0.7694=64/x
x=64/0.7694 =83.2
Ans=83.2 spacing

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