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Internal stability ensures the soil layers and reinforcements function together as a unified mass.
This is the only section where the user manually enters data. It should collect: Total wall height ( ), embedment depth ( ), batter angle, and backslope angle ( Reinforced Soil Properties: Unit weight ( γrgamma sub r ), friction angle ( ϕrphi sub r ), and cohesion ( , usually assumed to be 0). Retained/Backfill Soil Properties: Unit weight ( γbgamma sub b ), friction angle ( ϕbphi sub b Foundation Soil Properties: Unit weight ( γfgamma sub f ), friction angle ( ϕfphi sub f ), and allowable bearing capacity ( qallq sub a l l end-sub
. It includes specific tabs for inputting wall geometry, soil properties, and performing checks for in-service and construction conditions. CivilWeb MSE Wall Design Spreadsheet
If you are building or downloading a template, ensure it covers: mse wall design spreadsheet
: Choice between extensible (geogrids/geotextiles) or inextensible (steel strips/mats) materials. 2. Stability Analysis (Limit States)
Standardized by AASHTO (American Association of State Highway and Transportation Officials) for highway projects. It applies separate load factors to forces and resistance factors to material strengths.
): Determining the horizontal earth pressure at each reinforcement layer. If you share with third parties
Prr=2⋅Le⋅σv′⋅F*⋅α⋅Rccap P sub r r end-sub equals 2 center dot cap L sub e center dot sigma sub v prime center dot cap F raised to the * power center dot alpha center dot cap R sub c Lecap L sub e is the embedment length behind the failure surface, σv′sigma sub v prime is the effective vertical stress, F*cap F raised to the * power is the pullout resistance factor, and is the scale correction factor. 🏗️ LRFD vs. ASD in Spreadsheet Design
Automatic calculation of Sliding, Overturning, and Bearing Capacity.
Marcus blinked. “But I followed the manual step-by-step.” soil phi (34°)
The you need to follow (e.g., AASHTO LRFD , NCMA , BS 8006 )
He typed in the wall height (6.2 m), soil phi (34°), geogrid type (Mirafi 5XT), surcharge (12 kPa live load + 5 kPa dead load). The spreadsheet hummed.
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Mechanically Stabilized Earth (MSE) wall design spreadsheets are critical tools for engineers to verify both internal stability