Rigid Inclusion Quality Control and Performance Verification Using Drilling Parameters: A Streamlined Approach-PPT Presentation

PPT Presentation

Pdf Summary

Rigid inclusions improve weak, compressible ground by transferring structural loads through a load-transfer platform to deeper, stiffer soil. They commonly use displacement augercast pile systems, which compress or displace soil during installation and inject grout as the auger is withdrawn, producing little or no spoil.<br /><br />Installation equipment can collect measurement-while-drilling data, including penetration resistance. The presentation describes using these data for quality control and performance verification. A Penetration Resistance Index (PRI) combines longitudinal and tangential resistance; the Integrated Resistance Index (IRI) sums PRI below the neutral axis, where the inclusion resists load. Comparing measured IRI with a target IRI enables rapid assessment of whether installed elements meet design expectations.<br /><br />Reviewing installation logs in real time, alongside results from test elements and load testing, can speed quality-control decisions and help identify weaker ground that may require deeper or additional inclusions. This approach may improve construction quality and support design optimization, such as varying element depths or spacing to suit local ground conditions. The presentation emphasizes that installation data offer a practical, continuous view of subsurface conditions and inclusion performance, while noting that the methods discussed are not necessarily federal requirements.

Keywords

rigid inclusions

weak compressible ground

load-transfer platform

displacement augercast pile

measurement while drilling

penetration resistance

quality control

Integrated Resistance Index

load testing

ground improvement