ABSTRACT
Example 15.17 Precast concrete piles 16 in. in diameter are required to be driven for a building foundation. The design load on a single pile is 100 kips. Determine the length of the pile if the soil is loose to medium dense sand with an average N
cor value of 15 along the pile and 21 at the tip of the pile. The
water table may be taken at the ground level. The average saturated unit weight of soil is equal to 120 Ib/ft3. Use the static formula and F
s = 2.5.
