SAFE LOAD L Safe load tons W Weight of hammer tons H Height

SAFE LOAD L: Safe load (tons) W: Weight of hammer (tons) H: Height of drop (M) B: Number of blows/cuft to drive last batch of concrete (blows/cuft) V: uncompacted volume of base and plug (cu-ft) K: a constant associated with soil and pile types

Solution

Solution:-

Given

Safe load(L) = 160 tons

Weight of hammer(W) = 3 tons

B = number of blows/cuft = 40

V = uncompacted volume of base and plug = 25 feet³

K = 25

Height of drop (H) = ?

We know that

L = (W*H*B*V^2/3)/K

160 = (3 * H* 40 * 25^2/3)/25

H = 3.89 feet    Answer