Two pile axial load tests were performed in a site in Depok, West Java. The soil of the
site is predominantly a silt-clay soil, characterized by seven mechanical cone penetration tests
(CPTs). The piles were 5.5 m long and 11.5 m long, 250 mm square piles. The results of the static
load tests showed that the ultimate capacities were achieved. The axial load tests were
subsequently back-analyzed using an axisymmetric finite element model using PLAXIS. In the
back-analyses, the soil modulus and shear strength in the model, using the cone penetration
resistance as the reference, were adjusted so that the numerical load-settlement curves matched
the actual curves. The results of the back-analyses are then synthesized with the results of the
CPTs, and are compared with available design guidelines. Some recommendations are then
proposed.