b'PPB Eccentric Underpinning Bracket InstallationThe following nine steps illustrate the typical installation PPB Eccentric Underpinningprocedure forthe PPB-300,PPB-350orPPB-400 Bracket ComponentsEccentricUnderpinningBrackets.Figure 2showsastructure with a spread footing.The detail on the left sideofFigure2illustrates the configurationused when PIERinstalling the resistance pier system and driving the pier CAPpipe. On the right side of Figure 2 is the configuration oftheinstalledpiersystem followingthetransferofthestructural load to the pier. ECP Typical Specifications areavailableand providethespecificanddetailedproductinstallation requirements and procedures. Please contactECP engineering department for more information.1. Sitesurvey:Pierplacementsare determinedandlocations of all underground utilities are verified.BRACKET2. Excavation: Small excavations are dug for access at ROD & NUTeach placement location.The excavation required at BRACKETCONTROL FACEthe foundation is usually about 3 feet square. SLEEVE PLATE3. Preparationofthefoundation: Thefootingis (PPB-350 ONLY)notched(ifrequired)to situatethe EccentricUnderpinning Bracket under the stem wall.The areaunderthefooting ischippedasmoothandlevelcondition.The face of the stem wall is adjusted to be EXTENSIONPIERvertical (plumb) at the bracket attachment location. SECTION4. BracketAttachment:The EccentricUnderpinningBracketissecuredtothefootingusing two anchorbolts. The drive stand and the hydraulic cylinder aremounted to the bracket.(See left side of Figure 2.) STARTER5. PierPipeInstallation: Thepierpipeisadvanced PIERintothesoilusingasmallportablehigh-pressure SECTIONhydraulic pump.Pier installation continues until rockor suitable bearing is encountered below any unstablesoil near the surface. The piers may be installed from INERTIA SLEEVEFRICTIONoutsideorinsidethestructure. Lowoverhead REDUCTION INSTALLS INSIDEPIER SECTIONSclearance is not a problem during installation because COLLAR (OPTIONAL SOMEeach pier section is 3-1/2 feet long. PRODUCTS)6. Proof Load Test:Every pier is field load tested to ESR-4471insure that rock or other firm bearing is verified to be Figure 3.Component Configuration forsubstantial enough to withstand the load required to Typical PPB-300, PPB-350 & PPB-400restore andsupport thestructure.Thestructure Eccentric Underpinning Brackets. provides the reaction force for installing, and for proof foundation to the ECP Steel Piers .testing. Factorof Safeties from 1.25to3.0 are Thestructureisgentlyandevenlytypically generated during installation. lifted tothespecifieddesign7. Preparations for Restoration:Once all piers have elevation. The hex nuts at the pierbeeninstalled,loadtested,andtheinstallationdata caps are secured at each placementrecorded;liftingheadassembliesandhydraulicsare tosecuretheload.Theliftingplaced at each bracket.All are connected to hydraulic equipment is then removed.hand pumps and one or more manifolds. 9. CleanUp:Thesoilthatwas8. Restoration:Under careful supervision, the structural excavatedateachpierplacementloadistransferredfromthefailingsoilunderthe location is replaced and compacted.The site is left clean and neat.ECP Steel Piers - Technical Design Manual2021 Earth Contact Products, L.L.C.2021-09 Chapter 6 - Page 111 All rights reserved'