Comparative behavior of laterally loaded groups of bored and driven piles in cohesionless soil

The lateral load performance of two pile groups, one consisting of driven displacement piles and one consisting of bored piles, is described. The effect of installing the piles reduced the soil stiffness within the bored pile group, making the soil less efficient in resisting lateral pile movements than in the driven pile group. Structurally, however, the bored piles were more resistant to flexural loading. The net effect was that the system of bored piles was stiffer than the system of driven displacement piles.