The Engineering News formula for computing the allowable load carrying capacity (Qa) of a pile driven through the fall of hammer of weight (W) and fall height (H cms) steam hammer giving (S cms) penetration with the last blow is given by :
1
\(\rm \frac{WH}{(S+0.25)}\)
2
\(\rm \frac{WH}{6(S+0.25)}\)
3
\(\rm \frac{WH}{(S+2.5)}\)
4
\(\rm \frac{WH}{6(S+2.5)}\)