Minimum reinforcement in foundation

Hello,

In "Design for Flexure" section, STAAD foundation calculates the minimum reinforcement based on this equation:   As min = ρ. b . d eff

b : foundation width or w

d eff : effective depth

But ACI says As min = ρ. b . h

[  ACI   7.12.2.1  Area of shrinkage and temperature reinforcement shall provide at least the following ratiosof reinforcement area to gross concrete area ........]

I am asking for your ideas on this. At the moment I think it is wrong and must be corrected in STAAD.foundation.

Thank you

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