A reinforced earth wall 12 m high is reinforced with strip elements 12.0 m long and 15
Question:
A reinforced earth wall 12 m high is reinforced with strip elements 12.0 m long and 15 mm thick with horizontal spacing of 1.3 m and vertical spacing of 1.0 m. The angle of shear resistance between the elements and the fill is 29 degrees and the tensile strength of the strip is 300 N/mm2. The unit weight of the fill is 18.5 kN/m3 and its angle of shearing resistance is 34 degrees. The highest strip lies at 1 m below the top of the wall and the lowest strip is at 9 m below the top of the wall.
b) Determine the minimum width required for the strip elements assuming a safety factor against tensile rupture of 2.0.
c) Determine the factor of safety against pull-out.
d) Why is the Rankine active wedge considered when undertaking an analysis of reinforced earth? please include a diagram in your answer.
e) Considering the previous question, how does the failure plane impact the reinforcement strips in the backfill (i.e. their length)? Please use a diagram to in your answer.
Fundamentals Of Hydraulic Engineering Systems
ISBN: 978-0136016380
4th Edition
Authors: Robert J. Houghtalen, A. Osman H. Akan, Ned H. C. Hwang