Use Eq. (1), Figure 1, and the following values to determine the at-rest lateral earth force per unit length of the wall. Also find the location of the resultant. H = 5 m, H1 = 2 m, H2 = 3 m, γ = 15.5 kN/m3, γsat = 18.5 kN/m3, φ′ = 348, c′ = 0, q = 20 kN/m2, and OCR = 1.

Equation 1

Figure 1

   

K, 1- sin o