Quality Verification Engineering and Performance Evaluation of Small Diameter Segmented Pipe Piles-PPT Presentation

PPT Presentation

Pdf Summary

The presentation describes quality verification and performance testing of small-diameter segmented pipe piles used in the rehabilitation of Parliament Hill’s Centre Block. The project required foundation upgrades for modern seismic standards and temporary building support during excavation and construction.<br /><br />Pile inclination was measured using a Borehole Inclination Test (BIT) system, which combines a biaxial tilt meter and gyroscopic sensor. It requires no special pile preparation, provides immediate results, and complies with ASTM D8232-18. Camera inspections were also conducted to check casing joints for defects such as open or bent threads, including on piles installed before inspections were added to the project scope.<br /><br />The test pile program went beyond standard static load testing by testing in both tension and compression and adding strain gauges along the piles and tilt meters at pile heads. A separate rock-splitting mock-up program instrumented four piles with strain gauges, tilt meters, geophones, and Shape Accelerometer Arrays. High-frequency strain measurements captured stresses during equipment trials. The resulting data helped the owner’s structural engineer assess peak stresses, excavation methods, and any permanent pile deformation before production excavation.<br /><br />The presentation emphasizes that timely inclination testing and detailed inspections help contractors and owners identify problems early, plan proportionate corrective actions, and verify compliance with specifications. Supplemental instrumentation can also improve understanding of pile performance, inform design and value-engineering decisions, reduce construction risk, and avoid the higher costs of addressing problems later.

Keywords

quality verification

performance testing

segmented pipe piles

Borehole Inclination Test

pile inclination

ASTM D8232-18

camera inspection

static load testing

strain gauges

seismic rehabilitation