C-5Acceleration

$\frac{1}{f_{r}^{2}}=\frac{1}{f_{1}^{2}}+\frac{1}{f_{2}^{2}}$

The peak acceleration $a_{\mathrm{o}}$, from heel impact for floors of spans greater than 7 m and natural frequency $f_{1}$, less than $10 \mathrm{H}_{\mathrm{Z}}$ may be calculated as:

where

The percentage of critical damping may be assumed approximately as given below: