CE 76509 — Groundwater Engineering
21 Problems across 6 Chapters — fully worked with diagrams, key formulae & explanations
Each chapter includes: expanded step-by-step solutions • concept boxes • derivation hints • SVG diagrams • exam tips • physical insights • comparison tables • unit conversion warnings
| # | Exam | Chapter | Problem Type | Key Answers |
|---|---|---|---|---|
| 1 | 2078 Q2b | 2 | Darcy validity rmin | rmin = 0.33 m |
| 2 | 2073 Q2b | 2 | Darcy validity rmin | rmin = 0.26 m |
| 3 | 2071 Q6 | 2 | Darcy check + seepage velocity | Re = 0.0004; vs = 0.17 m/day |
| 4 | 2078 Q3b | 3 | Unconfined + recharge | q1=471.4, q2=470.6, d=784 m |
| 5 | 2073 Q3a | 3 | Water-table contour (4 wells) | Graphical (flow D→B) |
| 6 | 2073 Q3b | 3 | Dupuit (no recharge) | Q = 0.502 m²/day |
| 7 | 2072 Ash Q4 | 3 | Water-table contour (3 wells) | Graphical |
| 8 | 2072 Ash Q5 | 3 | Confined, variable thickness | Q = 6.95×10−3 |
| 9 | 2072 Mag Q7 | 3 | Confined, variable thickness | Q = 1.05×10−2 |
| 10 | 2071 Q4 | 3 | Unconfined + recharge + no rain | q1=172.95, d=599.5, qp=0=0.15 |
| 11 | 2078 Q4b | 4 | Thiem confined well yield | Q = 0.0177 m³/s; −4.9% |
| 12 | 2073 Q4b | 4 | Dupuit unconfined well | Q = 12,280 m³/day |
| 13 | 2078 Q5b | 5 | Cooper-Jacob (time-drawdown) | T≈1000 m²/day, S≈1×10−4 |
| 14 | 2073 Q5b | 5 | Cooper-Jacob (identical data) | Same as #13 |
| 15 | 2072 Ash Q6 | 5 | Cooper-Jacob (identical data) | Same as #13 |
| 16 | 2071 Q8 | 5 | Distance-drawdown (multiple wells) | R0≈613 m, T≈0.0135 m²/s |
| 17 | 2078 Q7 | 7 | Recuperation test | K=0.532/hr; Q=26.1 m³/hr |
| 18 | 2073 Q8b | 7 | Recuperation test (+ diameter) | K=0.70/hr; D=6.27 m |
| 19 | 2071 Q10 | 7 | Recuperation test (identical) | Same as #18 |
| 20 | 2072 Ash Q3 | 9 | GW storage — Pokhara | V = 6.4×106 m³; 44 wells |
| 21 | 2072 Mag Q3 | 9 | GW storage — Janakpur | V = 3.825×106 m³; 25 wells |
Note: Chapters 1 (Occurrence), 6 (Exploration) and 8 (Pumps) contain only theory questions — no numericals.