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An unbiased, comprehensive review of helical pile technology andapplications Helical piles have risen from being merely an interestingalternative for special cases to a frequently requested, morewidely accepted deep foundation adopted into the 2009 InternationalBuilding Code. The first alternative to manufacturer-producedmanuals, Howard Perko's Helical Piles: A Practical Guide toDesign and Installation answers the industry's need for anunbiased and universally applicable text dedicated to the designand installation of helical piles, helical piers, screw piles, andtorque anchors. Fully compliant with ICC-Evaluation Services, Inc.,Acceptance Criteria for Helical Foundation Systems andDevices (AC358), this comprehensive reference guidesconstruction professionals to manufactured helical pile systems andtechnology, providing objective insights into the benefits ofhelical pile foundations over driven or cast foundation systems,and recommending applications where appropriate. After introducingthe reader to the basic features, terminology, history, and modernapplications of helical pile technology, chapters discuss: Installation and basic geotechnics Bearing and pullout capacity Capacity verification through torque Axial load testing, reliability, and sizing Expansive soil and lateral load resistance Corrosion and life expectancy Foundation, earth retention, and underpinning systems Foundation economics Select proprietary systems IBC and NYC Building codes Covering such issues of concern as environmental sustainability,Helical Piles provides contractors and engineers as well asstudents in civil engineering with a practical, real-world guide tothe design and installation of helical piles.