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DESIGN MANUAL& KEYWALL OPERATING GUIDED3H:1V SLOPING SURCHARGE AASHTO METHODOLOGIESThis set of calculations is intended to verify the KeyWall program output of a typical reinforced soil walldesign section. The design follows the basic AASHTO procedures outlined previously in the KeystoneDesign Manual and compares the internal difference of AASHTO 96 vs AASHTO Simplified. Thepertinent design information is summarized below:1) General Design DataKeystone Compac II Units (120 pcf with drainage fill and W u =1.00')Tensar UXK1400 HDPE GeogridWall Batter (ι) = 0˚, near-vertical orientationDesign Height = 10' (9' exposed + 1' embedment)Base Length, B = 9.0' (70% min B/H or 8' minimum)Backslope, β = 18.4˚, 3H:1V backslopeSurcharge = slope only2) Soil Parameters (degrees, psf, pcf)SOIL PARAMETERS φ c γReinforced Soil 34 0 120Retained Soil 30 0 120Foundation Soil 30 0 1203) Geogrid Design Parameters (plf)Geogrid T ult FS cr RF d RF id LTDS FS T alGeogrid Tult FScr Tcr FSd FSid LTDS FS TalTensar UXK1400 4800 2.60 1.10 1.10 1526 1.5 1017plfTensar UX1400SB 3700 2.64 1401 1.10 1.05 1213 1.5 809 plfCi & Cds = 0.90 for select backfill4) Geometric Parameters - AASHTOInternalExternalφ = 34 degrees φ = 30 degreesδ = β = 18.4 degrees δ = β = 18.4 degreesα = 90 degrees (90˚ + no batter) α = 90 degrees (90˚ + no batter)β = 18.4 degrees (Infinite slope) β = 18.4 degrees (Infinite slope)D.1