b'Anticipated Service Load RangePAL - Soil Anchor Plate - F.S. = 1.5131211Earth Contact Products10Service Load Range x 1,000 lb.100% Sand9Clayey Sand87 SandyClay6 100%Clay543 PAL - Service Load Range - F.S.=1.5 .22 2.5 3 3.5 4Std Penetration Test - "N" blows/ft.Inthiscaseaveryconservativeserviceload Itisextremelyimportanttodetermineifvalue of 5,000 pounds is suggested. excessivewaterispresentand to eliminatetheDetermininghorizontalforceonwall: The cause of soil saturation as part of any project tohorizontalforceofthesoilagainstabasement addsupplementalwallsupport. Whensoilwall could be determined by calculations. and/orsubsurfaceconditionsareunknown, itBelowarethegeneralizedequationsfor MUSTbeassumedinthedesignthatwatercalculating horizontal saturated soil loads on the pressure is present.failing basement wall. It is important to remember that when excessiveEquation 2: Basement Wall Load hydrostatic pressure is removed from behind theP HS= 45 x (H 2 ) (Saturated - Water is Present) basement wall, the horizontal soil load is reducedby 60%.Where: P HS= Soil Load on wall - (lb/lineal foot)H = Height of backfill against wall - (ft) Usingthehorizontal forceagainstthebasementwall graph:ECP has developedaEquation 3: Simple Retaining Wall Load graph to help determine the horizontal basementP HS= 50 x (H + S) 2(Saturated - Water is Present) wall load (P HS ). This graph allows the installer toWhere:P HS= Soil Load on Wall - (lb/lineal foot) quicklydeterminethehorizontalforcewithoutH = Height of Backfill - (ft) making calculations.S = Height of Soil Surcharge - (ft) Looking at the graph on next page the upper lineKeep in mind that most basement wall failures represents the horizontalforceagainstthewallaretheresultofincreasedhorizontalforce caused by saturated soil conditions (P HS ) at thecaused by saturated soil.We suggest as Safe wall.Usedesignthatyoualwaysassumesaturated The dashed lower line indicates the reduction insoil conditions. horizontal force possible if all the sources of theECP Helical Plate Anchors Technical Service Manual2021 Earth Contact Products, L.L.C.2021-09 Chapter 2 - Page 44 All rights reserved'