Augered Cast-In-Place Piles Manual, Third Edition, with 2025 Errata-PDF

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Pdf Summary

The Deep Foundations Institute’s <em>Augered Cast-in-Place Pile Manual</em> (third edition, 2016, with May 2023 errata) provides model specifications and commentary for designing, installing, inspecting, and testing ACIP piles. It is guidance for preparing project-specific specifications—not a pre-engineered design—and emphasizes that requirements must reflect the site, structural loads, access, equipment, and schedule.

ACIP piles are formed by advancing a hollow-stem continuous-flight auger to the required depth, then pumping grout through the auger as it is withdrawn. Reinforcement is generally inserted into the fresh grout. The manual covers contractor qualifications, materials and equipment, submittals, installation procedures, payment, and acceptance.

Key quality controls include establishing procedures through indicator or test piles; maintaining grout pressure and specified grout volumes during withdrawal; recording drilling and grouting data for every pile; and promptly reporting installation problems. Inspection and grout sampling are required. Automated monitoring may supplement, but not replace, manual inspection. Load testing and optional nondestructive testing can help assess performance and integrity; NDT results must be interpreted alongside installation records and site conditions, not used alone to accept or reject piles.

The 2023 errata permits Type 1L cement as a substitute for Type I/II cement when project performance is verified, with mix compatibility and durability checked as appropriate. It also clarifies that planned grouting pauses for limited-access installations are not treated as interruptions requiring auger re-lowering, provided project-specific procedures address the pauses.

Keywords

Augered Cast-in-Place Pile

ACIP piles

Deep Foundations Institute

pile installation

grout pressure

quality control

load testing

nondestructive testing

project-specific specifications

2023 errata