पारगम्यता k वाली मिट्टी के माध्यम से, H शीर्ष (head) के तहत प्रवाह के लिए, प्रवाह जाल (flow net) का आकार कारक (shape factor) 0.5 है। मिट्टी के माध्यम से रिसाव (seepage) ज्ञात कीजिए।

A rigid retaining wall 5 m high is restrained from yielding. The backfill consists of cohesionless soil having φ' = 30° and unit weight of soil γ = 18 kN/m3. Compute the total earth pressure per metre length of the wall at rest. (Consider sin(30°) = 0.5, cos(30°) = 0.866)

Calculate the average contact pressure (in kN/m2) directly beneath a square footing of dimensions 4 m × 4 m carrying a vertical load of 200 kN.