Download - Keystone

DESIGN MANUAL& KEYWALL OPERATING GUIDEGEOMETRY INPUTBackfill SlopeEnter the slope angle of backslope in the design section as applicable.Horizontal OffsetEnter the horizontal offset as measured from the back of wall to the break in slope or the horizontal offsetof live and dead load for a level surcharge design case.HorizOffsetLive/Dead loadBackslope angleFigure 5:8 Geometry TabSurchargeEnter the live or dead load surcharge (psf or kN/m²) as applicable.Live and dead loads are only applied to the horizontal surfaceabove the wall, not the sloping surface as shown.WallHeightLengthDesign SectionLoad WidthEnter width of the live or dead load when modeling a strip live load. This value should be left at 100ft or30m for an infinite loading condition unless performing a special analysis.Minimum LengthEnter a minimum geogrid length that may be required. The program defaults to 4' (1.2m) for NCMA /Rankine and 8' (2.44m) for AASHTO. KeyWall will use the minimum reinforcement length specifiedregardless if a shorter length will satisfy the design criteria.Minimum L/HEnter a minimum base to height percentage that may be required. The program defaults to minimums of60% for NCMA and Rankine, and 70% for AASHTO.5.11