b'systemthatdistributesequalpressuretoall TheProjectInstallationReportdatais usedtojacks. calculatetheactualfactorsofsafetyforeach Thehandpumpisactuated,transferringthe Torque Anchor placement:FS Actual= T Finalx k (Table 12)/ P Liftstructural load from the soil below the footing -1totheTorqueAnchorshafts.Asthe Pile 1: FS = (2,000 ft-lb x 10 ft ) lb / 9,000 lbstructurerespondsandaportionofthe FS pile 1= 2.22foundation reaches the desired elevation, the Pile 2: FS = (1,950 ft-lb x 10 ft -1 ) lb / 9,400 lbjack(s)supportingtherestoredarea(s)are FS pile 2= 2.07isolatedandthepressureatthesejack(s) is Pile 3: FS = (2,050 ft-lb x 10 ft -1 ) lb / 7,700 lbrecorded. FS pile 3= 2.66 Therestorationprocesscontinuesuntilthestructureissatisfactorilyrestored,andall PROJECT INSTALLATION REPORTjackshavebeenisolatedandtheirpressures Project Name: Design Example 5recorded. Project Address: 123 Anywhere, Mid-America, USA Allinstallationandrestorationdatais Products Installed: TAF-150-60 12-14 LeadtransferredtoaProjectInstallationReport.TAE-150-60 ExtensionsThis report should include, but is not limitedTAB-150-SUB Utility Bracketto,projectidentification,equipmentused, Torque Motor:Model LW6K6,000 ft-lbproductinstalled,finalinstallationtorque, Lifting Jack:Model RC25425 Toninstalleddepth,liftingforcerequiredto Calculated Ultimate Pile Capacity: P u= 19,500 lbrestorethestructureandliftmeasurement. Calculated Working Pile Load: P w=9,750 lbThisdatamustberecordedforeach Placement Identification Pile 1 Pile 2 Pile 3placement. Final Install Torque, ft-lb 2,000 1,950 2,050 Review the report and calculate actual factors Pile Depth, ft 18.5 16 16.5ofsafety ontheinstallationtoseeifthe Force to Lift, lb 9,000 9,400 7,700design requirements have been satisfied. Amount of Lift, in 1-1/2 1-3/4 211.ActualLoadvs.CalculatedLoadand Actual Factor of Safety 2.22 2.07 2.66InstalledFactorofSafety:Theinstallation Soil tended to be non-homogeneous and it is notdata must be compared to the calculated values. unusual for the installation torque to vary fromThis enables the designer to verify the accuracy point to point on a project; in addition, the loadof the design.In addition, actual project factors onafootingisusuallynotuniformduetoof safety should be verified, as shown below. different architectural elements in the design ofTheactualfactorofsafetyforeachpile thestructure.Pile2hadslightlylowershaftinstallation is calculated, a slight variation of the torsion thanrequiredandhadaslightlyhighertypical factor of safety formula is used. working load.This resulted in the lowest FactorProject Factor of Safety Equation: of Safety.Pile three was on a lightly loaded partFS job= P u-job/ P w-job of the building and developed a large Factor ofSafety.Where:P u-job = Installed Estimated Ult. Capacitylb End Design Example 6= Installation Torque x k)P w-job= Lifting Force to Restorelb= Jack Pressure x Cylinder Area)Review of Results of Example 6Comparing the calculated design working load of 8,818 lb per pile (P w= w (Step 1) x X (Step2) = 1,300 lb/ lineal ft x 7-1/2 ft = 9,750 lb) to the actual lifting forces one can see that allworking pile loads are slightly lower than predicted by the calculations.These differencesbetween calculated and actual working loads are not significant and are related to the factthat actual loads on the footing are not uniform along the footing.The actual factors of safetyfor the installation on this project demonstrate that the project has factor of safeties withinnormal tolerances.The project has a safe design.ECP Technical Design ManualTorque Anchor Design Examples2021 Earth Contact Products, L.L.C.2021-09 Chapter 5Page 99 All rights reserved'