b'Design Example 4Calculatethe Maximum Pier Spacing for Design Example 3Because the structure in Example 3 has only a P W= (X) x P L (Chapter 6 - Equation 1),small footing with very light loads: Where;Notice that the foundation strength is P L= Lifting Load = 1,500 lb/lflimiting pier spacing on this project. X = Pier spacing, feetThe loaddeterminedinExample3 predicted P W= 7 ft x 1,500 lb/ft = 10,500 lb1,450lb/ft.InExample3A theloadestimateTheECPSteelPierPPB-300was1,550lb/ft. Inthisexamplewewilluse EccentricUnderpinningBracket1,500 lb/ft average for determining pier spacing. System is selected for the project.1.DeterminePierSpacing,X:MaximumPier spacing shall be 7 feet O.C.spacing for pier placement can be found in the The ECP Steel Piers on this project will have alower portion of Graph 2 - Chapter 6. (Below) calculatedFactorofSafetyof6.5:1.PierReferring to Graph 2, locate the line for an 18 Ultimate = 68,000 lb (P ULT ) / 10,500 (P W ) = 6.5tall monolithic footing in lowest graph and find F.S.theloadlinerepresenting1,500lb/ft.Read End Design Example 4downwardtoseetherecommendedmaximumcenter-to-center pier spacing.It is slightly overseven feet, which will load the reinforcing steelintheconcretetoyieldstrength.Preparethepreliminarydesignwitha safedistancebetween placements. X = 7.1 feet (Maximum) EARTH CONTACTUse - X = 7 feet PRODUCTSTheestimated pierloadingcannowbe Designed and Engineeredcalculated, and an appropriate ECP Steel Pieris to Performselected for this project.Structural weight per lineal footalong the footing perimeter (lb/ft)Height of Steel Reinforced 2,500 lb/ft 2,000 lb/ft18"3,000 lb/ft 1,200 lb/ftMonolithic Footing 1,500 lb/ft 1,000 lb/ft16" BEAMHEIGHT14"4 - #4 REBARS EXAMPLE 3B12" (GR-60)3 4 5 6 7 8PIER SPACING - feetTechnical Design AssistanceEarth Contact Products, LLC, has a knowledgeable staff that stands ready to help you with understanding howtodesignusingECPSteelPiers,installationprocedures,loadtesting,anddocumentationofeachpierplacement.If you have questions about structural weights, product selection or require engineering assistancein evaluating, designing, and/or specifying Earth Contact Products, please call us at 913 393-0007, Fax at 913393-0008.ECP Technical Design Manual -Steel Pier Design Examples2021 Earth Contact Products, L.L.C.2021-09 Chapter 7 - Page 138 All rights reserved'