: In order to perform environmental construction, eliminating the dust contamination caused bywelding reinforcement cages and blending concrete onsite, as well as diminishing the noise pollution causedby striking precast piles, three non-displacement precast piles subjected to lateral loading and another threethat were subjected to vertical uplift loading were tested. The lengths of these tested piles were 24.7m, 26.6mand 28m with the same cross-section. The soil was removed before these piles were placed in the requiredlocation. The horizontal and vertical movements of these piles under cycling loading and progressive loadingwere investigated through static load tests. Furthermore, six pairs of vibration wire strain gauges were weldedin one pile which was applied with uplift loading for load transfer observation and shaft resistance analysis.Results suggest that the critical and ultimate loads of lateral loaded piles and ultimate loads of uplift loadedpiles increase with the pile length, and in the pile with the welded gauges, that the axial force decreases withdepth along the pile, increasing with applied loads provided by hydraulic jacks. In addition, the distributionof unit shaft resistances is determined and the propagations of friction resistances are analyzed.
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