A slope on the side of a hill is cut to make space for a wider sidewalk. The soil behind the slope will be supported with a concrete block that will rest on a highly plastic clay. Slope Concrete Side walk block Figure 1.Scheme of the problem Assuming a 2D problem, the geometry of the block is: height (H) 5 ft and width (W)-8 ft. Consider the depth as a unity. A direct shear test is conducted on the clay...
5, A soil element inside a 20° natural soil slope carries total vertical stress (%) of 140 kPa, total horizontal stress (on) of 80 kPa and shear stress (Tvh) of 15 kPa Canticlockwise shear stress on vertical plane). The pore-water pressure (u) inside the element is 30 kPa. The critical state angle of friction of the soil is 30o and its undrained shear strength is 40 kPa. (a) Draw the Mohr's stress circles for this element in terms of total...
soil 3m 1 1 Q2)-A - Calculate the shearing strength along plane at 7 m in coarse sand soil , the ground water table is at depth of 3 m below the surface .the bulk density of soil above the water table is Yo=18.9 kN/m3 and the saturated density below ground water table is 20.5 kN/m². The angle of internal friction of the sand is 32° GS Yo = 18.9 kN/m3 GWT Ysat. = 20.5 kN/m B) A Q =...
Q8 An oil tank, 20 m in diameter, is to be built on a site where the soil profile consists of 4 m of dense gravel overlying 3 m of clay overlying rigid impermeable rock, and the water table is 1 m below the soil surface. If the tank applies a uniform pressure of 100 kPa to the surface of the soil calculate the differential settlement between the centre and perimeter of the tank after 1 year and after many...
The figure shows an element of soil at the interface between two dry sand layers on a a-32° slope The interface is d=7 m below the ground surface and ror both sand layers the friction angle is φ=30, and Ko= 0.41 Assume that the shear stress is zero on both the vertical and horizontal planes. Va1 (dry unit weight of sand layer 1) - 19 kN/m3 Ys2 (dry unit weight of sand layer 2) 20 kN/m Dry Sand (Yai Dry...
Soil mechanics Q2)-A - Calculate the shearing strength along plane at 7 m in coarse sand soil , the ground water table is at depth of 3 m below the surface the bulk density of soil above the water table is Xb=18.9 kN/m3 and the saturated density below ground water table is 20.5 kN/m². The angle of internal friction of the sand is 320 1 GS 3m 1 4 m Yo = 18.9 kN/m2 GWT Ysat. = 20.5 kN/m2 B)...
4. A slope is shown in the figure below. The potential shear failure plane is labeled in the figure. Through a series of lab tests, the friction angle d' = 30° and the cohesion is zero. ECE 5413 Shallow and Deep Foundation Design Compute the shear strength of the soil at point A when the ground water table is at level B; then compute the new shear strength when the water level rise to level C. Assume the unit weight...
. A long natural slope in fissured overconsolidated clay is inclined to the horizontal with an angle =15 o . The saturated unit weight of clay is 18 kN/m3 . The water table is at the surface and the seepage is roughly parallel to the slope. A slip has developed on a plane parallel to the surface at the depth of 4.0 m. Find the factor of safety along the slip plane, for the following two cases: a. Peak shear...
A homogeneous earth embankment is 25 m high and the slope inclination is 2:1 (H:V). The effective cohesion of the embankment is 45 kN/m², its effective friction angle is 25 degrees, and the bulk unit weight is 19.2 kN/m'. Assume the potential failure surface is a plane. Determine the minimum factor of safety of the slope. Follow the procedure outlined on page 347 of your textbook. Assume initial F = 3.2. Is the slope stable?
1. Using the concepts covered in earth pressure theories (not Taylor's chart), the critical depth of vertical cut in a saturated cohesive soil with c = 15.5kPa and y = 18 kN/m3 will be? a) 0.86 m c) 6.88 m b) 3.44 m d) 1.72 m condition: 2. The upstream and downstream slopes of an earth dam is critical for the a) reservoir partial pool c) steady seepage b) sudden drawdown d) earthquake 3. In the simplified Bishop's method of...