b'IntroductionTheECPSteelPierbelongstoafamilyof buildingwith substantialconstructionandunderpinningproductsthataresometimes rigidity can develop greater factor safety on eachreferredtoasmicropiles,pushpiers,or pier thana structurewitha weaker and moreresistancepiers.Theseunderpinningproducts flexible structure.arehydraulically driven intothesoilusingthestructuralweightofthebuildingasareactionforce.A friction reduction collar is attached tothe bottom of the lead section of pier pipe.The 3\' to 4\'purposeofthe friction collaristocreatean STEM WALLSPREAD CONTINUOUSLYopening in the soil that has a larger diameter than FOOTING ADJUSTABLEthepierpipethatfollows.Thisdramatically FLOOR BRACKET LIFT RODreduces the skin friction on the pier pipe as it is SLAB PIER CAPPPB-300driven into the soil.This feature allows the pier PPB-350pipe to reach firm bearing and for the installer to PPB-400load test to verify that the pier has encountered PIER BRACKETsuitableendbearingorrockthatissuitabletosupport the design load. FACE PLATEThe ECP Steel Pier like other resistance piers isan end-bearing pier that does not rely upon, norrequiresskinfrictiontoproducesupport.Thepiersareabletodevelopafactorofsafety PPB-300-EPS PIER PIPEagainstfailureorcreep becausethepiersare 2-7/8" DIA x0.165" WALLinstalledandloadtestedindividuallyusing a ESR-4471 PPB-350-EPS PIER PIPEreaction force provided by the structural weight 3-1/2" DIA. x 0.165 WALLfroma substantialpart ofthe building.The PPB-400EPS PIER PIPEabilityofthe steelpier systemtodevelop a 4" DIA x 0.220 WALLPIPE SEGMENTS = 3\'-6"significant factor of safety comes from the pier SUITABLE LOAD LONGduring pierinstallation experiencinga much BEARING FRICTIONSTRATUM ORhigher load than the lower working load after the ROCK REDUCTIONserviceloadis transferred tothepier during COLLARrestoration.The piers are required to be drivenone at a time using the structural building weightasthereactionduringtheinstallation.During Figure 1. TypicalconfigurationfortheECPSteelPier load transfer and restoration, hydraulic jacks are System with Type PPB Eccentric Underpinningplaced at multiple pier locations, which place a Bracket attachment to the footing .lower design/workingloadoneachpier. AFeatures and InnovationsThepatentedECPSteelPieristhefourth nuts attached tocontinuouslythreadedrodsasgenerationofaproductinventedbyDonMay opposed to the limitations imposed by the use ofdatingbackto the1970s.ThecurrentECP shimsandpins thatarefound on some otherSteelPierincorporatesmanyadvancesover systems.The ECPSteelPierisalsomoreprevious versions. An important improvement to installer friendly because the inner chamber ofthe ECP Steel Piersystem is a reduction in the thedrivestandisquicklyaccessiblebyeccentricity between centerline of the pier pipe temporarily removingfaceplatesonthepierandthe foundationbracket.Thismeansthat bracketanddrivestand.Inaddition,apierthere is less moment (twisting) at the pier bracket alignment guide is integral with one of the drivewhenit isloaded.This feature translatesto stand face plates. The retaining plate that safelygreater load capacities.The system offers nearly secures the heavy hydraulic drive cylinder to theunlimited elevation recovery as the adjustment of drive stand is a large advancement for operatorthe pier bracket elevation is accomplished by hex safetyoverothersystems.ThedrivecylinderECP Steel Piers - Technical Design Manual2021 Earth Contact Products, L.L.C.2021-09 Chapter 6 - Page 109 All rights reserved'