b'Lateral spacing of anchorsX: The lateral Typically used spacing is provided in Table 3.distancespacingbetweentheEarthPlate Table 3.Lateral Anchor SpacingAnchors is dependent upon the following: Type of Wall Typical Spacing1. The estimated Service Load Capacity (T SL ) Concrete Block 4 to 5 feetof the Earth Anchor Plate, Reinforced Concrete 5 to 6 feet2. The type of wall construction, Rock Wall Consult Engineer3. The amount of distress to the wall caused by Example: Confirming viable anchor spacingthe horizontal force of the saturated soil. Basement wall: 8 ft concrete blockEquation 6: Wall Plate PlacementXOverburden height of soil6 ftX = T SL /P HSx FSWall is bowing at 3 feet above the floorWhere:X = Wall Plate SpacingfeetAssume anchor spacing4 ft O.C. (Table 3)T SL= Tension Service Loadlb.Field Estimated Soil Properties:P HS= Horizontal Force on Walllb/ft Soft, Sandy ClayN= 3 bpfFS = Factor of SafetyWhen a badly distressed wall is constructed with P HS= 45 x (H 2 ) (Eq. 2 ) = 45 x (6 ft 2 ) = 1,620 lb/ftconcreteblocks,orwhereanon-reinforced Anchorspacingisverifiedby multiplyingtheconcrete wall is severely distressed, vertical steel FactoredTensileServiceLoad - T SL bythesupports and/or horizontal whaler beams must be selected anchor spacing that we selected - 4 ft.used to provide even distribution of the reaction T SL= P HSx X = 1,620 lb/ft x 4 ft = 6,750 lbforce from the anchor across the face of the wall. Acheckof Anticipated ServiceLoadRangeOnemustverifythatthetypicalspacingfora graphbelowconfirmsthatthespacingisgivenprojectisviable.The FactoredService satisfactory for Sandy Clay, N = 3 bpf.TheLoad Capacity (FT SL ) of the Earth Plate must graphsuggestsacapacitybetween6,900andbe confirmed by using the Anticipated Service 7,800 lbs with a Factor of Safety of 1.5.Load Range graph.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.ECP Helical Plate Anchors Technical Service Manual2021 Earth Contact Products, L.L.C.2021-09 Chapter 2 - Page 47 All rights reserved'