b'Pier Installation, Load Testing & Project DocumentationPier Installation: Pier installation consists of the pier design (working) load.forcingthepierpipeintothesoiluntilend Graph 4belowprovidesaquickreference tobearingresistanceisencountered.Oncethis determine the actual downward force generatedoccurs,thestrengthofthebearingstratumis onthepierpipeata various pressuresontheverifiedby field loadtesting.Thepier is drive cylinder.subjected to a proof load test that is greater thanGRAPH 4.CYLINDER FORCE VS. HYDRAULIC PRESSUREHYD-350-DC Drive Cyl (8.29 sq.in.) PPB-350 & PPB-400 Pier SystemsHYD-300-DC Drive Cyl (5.94 sq.in)PPB-300 Pier SystemsHYD-254 (5.16 sq.in.) Lifting Ram908580 All drive cylinders sold by ECP75 are rated to 10,000 psi.706560Cylinder Force lb x 1,000555045403530252015 Earth Contact Products105500 1000 1500 2000 2500 3000 3500 4000 4500 5000 5500 6000 6500 7000 7500 8000 8500 9000 9500 10000Hydraulic Pressure - psiWARNING: If not using an ECP drive cylinder, VERIFY MAXIMUM CYLINDER PRESSURE RATING WITHMANUFACTURER PRIOR TO INSTALLING PIERS. Exceeding pressure rating could cause Injury or death.Graph 4 shows maximum pressureallowed on ECP cylinders only. Effective Areas of ECP Hydraulic Cylinders HYD-350-DC (3-1/2 & 4 dia) = 8.29 in 2Caution! When operating near the maximumHYD-300-DC (3 dia) = 5.94 in 2cylinderpressure,theamountofactuatorrodLifting Ram = 5.16 in 2extensionshouldberestrictedtolessthanfull IMPORTANT! EarthContactProducts,LLClength to prevent damage to the drive cylinder or doesnotrecommendexceedingmaximumactuator rod. workingpressureratingsofhydraulicEquation 2: Hydraulic Cylinder Force cylinders.F Cyl= A cylx P cyl When in doubt about the pressure rating ofWhere, F Cyl = Cylinder force on pierlb other brandsof cylinders,contacttheP cyl = Hydraulic Pressure psi cylinder manufacturer.A cyl =Effective Cylinder Areain 2ECP Steel Piers - Technical Design Manual2021 Earth Contact Products, L.L.C.2021-09 Chapter 6 - Page 125 All rights reserved'