Table 2 Geotechnical characterization of the soil layers underneath the (St. Sergius) Abu Serga church in old Cairo area
Soil type | Liquid limit (WL) % | Shrinkage limit (WS) % | Plasticity limit (WP) % | Dry unit weight (γunsat) | Saturated unit weight (γsat) | Specific gravity (Gs) | Permeability Kx = ky (m/day) | Initial void ration (e) | Compression index Cc | Young’s modulus E kN/m2 | Poisson’s ratio | Eoed kN/m2 | Soil cohesion c (kN/m2) | Friction angle (ϕ)° |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Clay | 45–60 | 17 | 20–45 | 20 | 23 | 2.7 | 1.52 * 10−4 | 1.84 | 0.3 | 1500 | 0.4 | 1204 | 50 | 27 |
Sand | 20 | – | 0 | 18 | 21 | – |  | – | – | 6000 | 0.35 |  | 0 | 34 |