1

Simple 2:1 slope, 40ft (12 m) high, ${\varphi }^{\prime }=20$ ; $c^{\prime }=600$ psf (29 kpa)

1.928

2.08

2.073

2.041

2

Same as 1 with a thin, weak layer with ${\varphi }^{\prime }=10$ ; $c^{\prime }=0$

1.288

1.377

1.373

1.448

3

Same as 1 except with ru = 0.25 for both materials

1.607

1.766

1.761

1.735

4

Same as 2 except with ru = 0.25 for both materials

1.029

1.124

1.118

1.191

5

Same as 1 except with a piezometric line

1.693

1.834

1.830

1.827

6

Same as 2 except with piezometric line for both materials

1.171

1.248

1.245

1.333