HOME       Foundation Inspection Glossary of Foundation Terms Recent Project Highlights   FOUNDATION REPAIR   Horizontal Crack Repair Improper Horizontal Repair Underpinning and Releveling Foundation Replacement  DEEP FOUNDATIONS  Helical Piles Resistive Piers Drilled Piers   RETAINING WALL   & HILLSIDE ISSUES New Retaining Walls Retaining Wall Fortification Walls with Limited Access Landslide Repair Hillside Stabilization Hillside Road Repair Hillside Additions   COMMERCIAL PROJECTS   Mega Foundations Post-tensioned Concrete More Commercial Projects   FOR ENGINEERS   Liquefaction? Problem Solved Typical Helical Specs   CAREERS & CONTACT   Personnel Careers at Avalon Avalon Supports the Famous Rockettes		RESISTIVE PIERS (PUSH PIERS) A push pier is type of deep foundation consisting of a round hollow steel shaft usually 2.5 to 4 inches in diameter that is pressed into the ground by a hydraulic ram countered by the weight of the existing structure. During installation each resistive pier individually lifts the structure, thereby resulting in an empirically-verified redundancy when multiple resistive piers are used. Resistive piers are available in very short segments, allowing installation in spaces with very little headroom. also known as: pipe pile, steel piers, resisitive piers For more information with diagrams like this, please see our glossary entries on items like push piers. Avalon installs Resistive Piers as another means of underpinning and raising sunken foundations. Steel shafts are hydraulically driven into the ground until the foundation begins to rise. During installation, each pier is made to do the work of at least two, thereby achieving a factor of safety. All piers are then pressed down upon to lift the structure back to level. After the installation of multiple 42-inch segments, Avalon goes beyond the industry standard by placing both rebar and concrete inside the hollow piers. Resistive piers are available in one foot sections to allow underpinning directly under the foundation with a small jack, as shown in this photo. The pier has been installed to the engineer’s PSI specification. The stand has been put in place and tightened to transfer the load, ready for concrete. Avalon Structural, Inc. 181 Ridgeview Drive Aptos, CA 95003 (831) 479-4389 (office) info@avalonstructural.com Copyright © 2015 Avalon Structural, Inc. All Rights Reserved CA License 677116 Classifications:  B, C-8 Avalon is a general building contracting firm and does not employ engineers.