A battered (leaning back) face on a dry-stacked retaining wall improves stability against lateral earth pressure by shifting the wall’s resultant closer to/within the middle third of the base, increasing frictional resistance and reducing overturning. It does not significantly change permeability (C) or directly increase cohesion between stones (D), and erosion resistance (B) is secondary compared to stability.
PDD References: Site & foundation systems—retaining wall behavior, active/passive earth pressures; IBC/Geotechnical fundamentals; CSI Div. 32 site improvements.
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