Deep Foundations

Confidential

Taproot Construction delivered a dual-scope foundation solution combining ground improvements and deep foundation systems tailored to the project’s diverse geotechnical conditions.

Aggregate piers were installed to improve bearing capacity and mitigate settlement within the upper soil profile. Designed for an allowable bearing pressure of 2,500 psf (pounds per square foot), the piers were constructed using a bottom-feed method to ensure consistent material placement and compaction. To confirm performance, a full-scale plate load test was performed, verifying that the aggregate piers met design criteria.

Along the existing structure where there were higher concentrated loads, Taproot installed micropiles to depths ranging from 92 to 115 feet. Each micropile was designed to resist axial loads of 100 kips in compression and 20 kips in tension. A static load test was performed in accordance with ASTM D1143 to validate the compressive capacity of the micropile system.

By combining ground improvement and deep foundation elements, Taproot provided a reliable, project-specific solution that optimized performance while addressing varying subsurface conditions with precision.

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