1. Determine the lateral force Pae for a proposed retaining wall 6 m high for a horizontal backfill and whose uniform weight is 16 KN/cu m. The back of wall is inclined 5° w.r.t. the vertical. Consider 8 = 15°, kv = 0 and kh=0.10. Locate the position, z, of Pae above the base. Use Coulomb's active earth pressure coefficient to determine Pa. Refer to the formulas in lesson Module 8. [Additional data: angle of internal friction Ø=30°]

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