A 1500 kN load was applied on two 20 m long and 500 mm diameter piles that were instrumented for measuring the load variation with depth.

a. The variation of frictional resistance per unit area, f_(z), with depth for the first pile is shown in Figure P12.1a.

Using Eq. (12.9), draw the variation of pile load Q_(z) with depth.

b. The variation of pile load Q_(z) with depth for the second pile is shown in Figure P12.1b. Using Eq. (12.9), draw the variation of frictional resistance per unit area, f(z), with depth.

Figure P12.1

fa (kN/m2) Qe (kN) 1500 40 10 m Soil 1 Soil 1 800 5 m 70 Soil 2 Soil 2 300 z(m) z(m) (a) (b)