Eurocode 7 Geotechnical Design Flowcharts for Walls

Eurocode 7 Geotechnical Design Flowcharts for Walls translate the prescriptive requirements of EN 1997-1 into visual, process-oriented workflows that support systematic design verification. Each flowchart begins with project classification (e.g., wall type, ground conditions, design approach) and proceeds through sequential decision gates—such as whether to apply Design Approach 1 (DA1), DA2, or DA3—each corresponding to distinct combinations of partial safety factors (e.g., γ_G, γ_Q, γ_R, γ_φ', γ_c', γ_k). Critical verification stages include sliding, overturning, bearing resistance, deep-seated failure, and global stability (often assessed via slope stability analysis), all evaluated under both persistent and accidental design situations. The flowcharts explicitly link geotechnical parameters (e.g., effective cohesion c', friction angle φ', unit weight γ) to appropriate characteristic values, correlation with ground investigation data (EN 1997-2), and model factor considerations. Importantly, they emphasize the designer’s responsibility for selecting appropriate models, interpreting site-specific data, and justifying assumptions—reflecting Eurocode 7’s performance-based philosophy rather than prescriptive solutions. These resources are especially valuable in multidisciplinary projects where clarity, auditability, and harmonized interpretation across national annexes (e.g., UK NA, German DIN EN 1997-1/NA, French NF P 94-270) are essential.