Static Load Pile Load Test Introduction:-

Static Load Tests or Maintained Load Test can be conducted to verify foundation design assumptions regarding the axial compression or tension resistance provided by a deep foundation element, as well as its deflected shape under lateral loads. YJACK Technology offers both highly instrumented static load tests (SLT) to meet the needs of project design requirements and basic load tests for construction quality assurance. Depending on the project's specifications, loading conditions, and type of deep foundation, YJACK Technology can attach or embed various instruments, including vibrating wire strain gages and resistance strain gages. The data from these instruments is collected and stored on a multi-channel data logger.

Standard readings of the applied load, determined from the jack pressure gage and load cell, and the deep foundation head movement, measured by LVDTs, digital dial gages, or mechanical dial gages, can be combined with the aforementioned instrumentation. This comprehensive approach allows for determining the capacity or nominal soil resistance, load-transfer behavior under axial loads, and deflected shape under lateral loads.

Upon processing the collected load test data, YJACK engineers compile a comprehensive final report that details the load-movement results and pile movement analysis. These findings are evaluated against the specified load test interpretation criteria to determine the deep foundation's capacity or nominal resistance. Depending on the instrumentation used, the report can also include load-deformation behavior at various depths and load transfer to the soil along the shaft length. For lateral load tests, the report summarizes the relationship between deep foundation head movement and applied load. Additional instrumentation allows for reporting on the deflected shape versus shaft length and/or head rotation.