Table 1 Engineering properties (Average) of pleistocene deposit (overconsolidated clay (OC)), holocene deposit (HA), and landfill (LAN). The engineering soil properties of all seven sub-units are presented in this table. The values of properties are shown in ranges.
Unit Name | Layer type | % of sand | % of Fine | Thickness (m) | SPT N value range | Unit Weight (kN/m3) | Vs. (m/s) | C (kN/m2) | Friction (\(^\circ\)) | PI | Density (gm/cc) | Vs30 (m/s) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
OC 1 | Madhupur clay | < 10 | > 90 | ≈  7.5 | 5–25 | ≈ 19 | 200–250 | 50–200 | < 10 | 25–35 | ≈ 2.00 | 220–350 |
Madhupur silt | < 20 | > 80 | ≈ 6 | 20–40 | ≈ 18 | 220–300 | 100–300 | < 15 | 25–35 | ≈ 1.9 | ||
Dupitila | > 60 | < 40 | ≈ 17 | 30–60 | ≈ 20 | 300–400 | < 15 | 30–40 | – | ≈ 2.1 | ||
OC 2 | Madhupur clay | < 10 | > 90 | ≈ 8 | 5–25 | ≈ 19 | 200–250 | 50–200 | < 10 | 25–35 | ≈ 2.0 | 250–350 |
Dupitila | > 60 | < 40 | ≈ 22 | 30–60 | ≈ 20 | 300–400 | < 10 | 35–40 | – | ≈ 2.1 | ||
OC 3 | Madhupur silt | < 10 | > 90 | ≈ 7 | 20–40 | ≈ 18 | 220–300 | 100–300 | < 15 | 25–35 | ≈ 1.9 | 250–350 |
Dupitila | > 60 | < 40 | ≈ 23 | 30–60 | ≈ 20 | 300–400 | < 10 | 35–40 | – | ≈ 2.1 | ||
HA 1 | Holocene clay | < 10 | > 90 | ≈ 12 | 0–10 | ≈ 16 | 120–180 | 40–100 | < 10 | 20–25 | ≈ 1.6 | 150–180 |
Holocene silt | < 20 | > 80 | ≈ 7 | 10–25 | ≈ 17 | 150–200 | 20–50 | < 20 | 15–25 | ≈ 1.7 | ||
Holocene sand | > 60 | < 40 | ≈ 11 | 20–35 | ≈ 18 | 180–250 | < 20 | 20–30 | 5–12 | ≈ 1.8 | ||
HA 2 | Holocene clay | < 10 | > 90 | ≈ 7.5 | 0–10 | ≈ 16 | 120–180 | 40–100 | < 10 | 20–25 | ≈ 1.6 | 180–250 |
Holocene silt | < 20 | > 80 | ≈ 4.5 | 10–25 | ≈ 17 | 150–200 | 20–50 | < 20 | 15–25 | ≈ 1.7 | ||
Holocene sand | > 60 | < 40 | ≈ 2 | 20–35 | ≈ 18 | 180–250 | < 20 | 20–30 | 5–12 | ≈ 1.8 | ||
Madhupur clay | < 10 | > 90 | ≈ 5 | 5–25 | ≈ 17 | 200–250 | 50–200 | < 10 | 20–35 | ≈ 2.00 | ||
Madhupur silt | < 20 | > 80 | ≈ 2 | 20–40 | ≈ 18 | 220–300 | 100–300 | < 15 | 25–35 | ≈ 1.9 | ||
Dupitila | > 60 | < 40 | ≈ 9 | 30–60 | ≈ 19 | 300–400 | < 15 | 30–40 | – | ≈ 2.0 | ||
LAN-OC | Landfill | > 90 | < 10 | ≈ 3 | 0–10 | ≈ 16 | 120–180 | < 10 | 25–30 | – | ≈ 1.7 | 200–300 |
Madhupur Clay | < 10 | > 90 | ≈ 7.5 | 5–25 | ≈ 19 | 250–300 | 100–200 | < 10 | 25–35 | ≈ 2.00 | ||
Madhupur Silt | < 20 | > 80 | ≈ 1.5 | 20–40 | ≈ 18 | 250–300 | 100–300 | < 15 | 25–35 | ≈ 1.9 | ||
Dupitila | > 60 | < 40 | ≈ 18 | 30–60 | ≈ 19 | 300–400 | < 15 | 30–40 | – | ≈ 2.0 | ||
LAN-HA | Landfill | > 90 | < 10 | ≈ 3 | 0–10 | ≈ 17 | 120–180 | < 10 | < 20 | – | ≈ 1.8 | 150–200 |
Holocene Clay | < 10 | > 90 | ≈ 9 | 0–10 | ≈ 16 | 120–180 | 40–100 | < 10 | 20–25 | ≈ 1.6 | ||
Holocene Silt | < 20 | > 80 | ≈ 10 | 10–25 | ≈ 17 | 150–200 | 20–50 | < 20 | 15–25 | ≈ 1.7 | ||
Holocene Sand | > 60 | < 40 | ≈ 2 | 20–35 | ≈ 18 | 180–250 | < 20 | 20–30 | 5–12 | ≈ 1.8 | ||
Dupitila | > 60 | < 40 | ≈ 5 | 30–60 | ≈ 19 | 300–400 | < 15 | 30–40 | – | ≈ 2.0 |