Problem 1 a) Make a scaled plot the variation of the effective stress (psf) with depth...
The effective stress at an arbitrary depth below the Atlantic Ocean is 20,205 psf. The pore water pressure at the same point is 12,480 psf. What is the total stress at this point? O 7.725 pcf O 32,685 psf 0 -7.725 psf O 7,725 psf
Problem 3. What is the effective shearing resistance in psf at 40 ft depth on a vertical surface? Assume c -5 pst, ф'-32 deg, and unit weight of 125 pct. Assume completely submerged. OCR-1. Hint: use at rest earth pressure to transform vertical stress to lateral stress tan K. w62.4 pcf
P3/4/5 Problem 3 Plot the variation of total stress, pore water pressure, and effective stress with depth for the sand and clay layers shown in a figure below. Given: Hi-6m and H-4m. Dry sand 0.65 -2.66 Groand water table -0.9 G,-2.73 Problem 4 Refer to a figure below in which there is water seepage. Gven: H-1.5 t and H- 4.5 t h-1.75 f, and 122 Ib/t a. Calculate the total stress, pore watcr pressure, and effective stress at C(z-2 n)...
3) (a) Plot the vertical effective stress with depth along section A-B Figure 2. (b) If the river level were to rise by 2 ft, would the vertical effective stress distribution change? Explain your answer. (c) If the river level were to drop by 2 ft, how much would the vertical effective stress at B change? River 8tt iver bed Soft clay 20ft | T 105-pcf Sand Yat 110 pctf