Geotechnical Foundations in Expansive Soils: Sudanese Practices Applied to Guinea Context

Expansive soils pose significant challenges for geotechnical engineering in Sudan and other arid regions due to their expansive and contractive behaviour. A comparative analysis was conducted using statistical models to assess soil properties and foundation designs in both regions. The proportion of expansive soil expansion during wet seasons exceeded 10% at critical foundations, necessitating enhanced design considerations for stability. Enhanced foundation designs incorporating expanded soil behaviour predictions are necessary to ensure structural integrity in Guinea's expansive soils. Foundation designers should consider dynamic load testing and incorporate predictive models into their design processes. The maintenance outcome was modelled as Yᵢₜ=β₀+β₁Xᵢₜ+uᵢ+εᵢₜ, with robustness checked using heteroskedasticity-consistent errors.