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Srro\ <br /> [TERRA" <br /> WALL SYSTEM <br /> PULLOUT CALCULATIONS <br /> Pullout is the amount of resistance of the reinforcing has to a pullout failure based on the Tmax applied and <br /> the depth of embedment(resistance). In an NCMA design the failure place is defined as the Coulomb failure plane <br /> which varies with face batter, backslope angle, and surcharge loads applied. All failure planes begin at the tail. of the <br /> facing units. <br /> For AASHTO calculations, the live load surcharge is not included in the Tmax value for pullout. <br /> Failure Plane Angle(p)= 57.0 Deg <br /> NOTE: The pullout capacity is limited by the LTDS of the reinforcing layer, not the ultimate pullout capacity calculated. <br /> F*=0.67 x tan(cp) =0.67 x 0.67 = 0.45 <br /> Le= embedment length = Li-block depth-hi*Tan(90 - p) <br /> La= Li-Le <br /> sv=geogrid spacing <br /> Rc= % coverage <br /> a=scale effect correction <br /> Pullout=2 x Le x F*x sv x a x Rc <br /> TABLE OF RESULTS <br /> Elevation[ft] Normal[Ibf] Ci %Coverage Tmax[ppf] Le[ft] La[ft] 1 Pullout_[Pr][pp}] FS PO <br /> -- <br /> 26.00 0.90 100 120 10.21 17.79 2974 24.70 <br /> 24.00 0.90 100 214 11.42 16.58 6655 31.10 <br /> 22.00 0.90 100 321 12.64 15.36 11045 34.41 <br /> 20.00 0.90 100 430 13.85 14.15 16143 37.57 <br /> 18.00 0.90 100 558 15.07 12.93 21949 39.35 <br /> 16.00 0.90 100 679 16.28 11.72 28463 41.93 <br /> 14.00 0.90 100 795 17.50 10.50 35685 44.90 <br /> 12.00 0.90 100 911 18.71 9.29 43615 47.89 <br /> 10.00 0.90 100 1024 19.93 8.07 52253 51.05 <br /> 8.00 0.90 100 1135 21.14 6.86 61599 54.27 <br /> 6.00 0.90 100 1246 22.36 5.64 71654 57.52 <br /> 4.00 0.90 100 1358 23.57 4.43 82416 60.71 <br /> 2.00 0.90 100 1467 24.79 3.21 93887 63.98 <br /> Note: Calculations and quantities are for PRELIMINARY ANALYTICAL USE ONLY and MUST NOT be used for final <br /> n or construction without the independent review, verification, and approval by a qualified professional engineer. <br /> UltraWall 5.0.19183 14 <br />