Unlined channel to be excavated in stiff clay to convey 9 m3/s. The slope is 0.0028. Design the dimensions.
Question 3 An exploratory drill hole was made in a saturated stiff clay. It was observed that the sand layer underlying the clay was under artesian pressure Water in the drill hole rose to a height of H1 above the top of the sand layer. If an open excavation is to be made in the clay, how deep can the excavation proceed before the bottom heaves? we are given H-8 m, H1-4 m, and w: 32% Exploratory drill hole Saturated...
Original Ground Surface Surface of Proposed Cut 0.7 Medium Stiff Gray-Brown Silty Clay,,n° 1 15 pcf 20 P12.1 Groundwater Table A highway cut is to be made in the deposit of medium stiff overconsoildated clay with cross- section shown schematically in the sketch above. Results of two consolidated undrain (CU) triaxial tests performed on undisturbed representative clay samples are: Test ConfiningDeviator stress Porewater pressure No. pressure, at failure, (o, a3 (psf) aue (psf) -at falilure, ur (psf) -58 +454 744...
Question 4 A 10-m-thick layer of stiff saturated clay is underlain by a layer of sand. The sand is under artesian pressure. If H=7.2 m, what would be the minimum height of water h in the cut so that the stability of the saturated clay is not lost? Saturated clay Sand P1840 kg/m 52.^.> 4'コ廳日リ: PD · 30.11.2018
Question 4 A 10-m-thick layer of stiff saturated clay is underlain by a layer of sand. The sand is under artesian pressure. If H=7.2 m, what would be the minimum height of water h in the cut so that the stability of the saturated clay is not lost? Saturated clay Sand P1840 kg/m 52.^.> 4'コ廳日リ: PD · 30.11.2018
help with problems 1 & 2 please and explain Problem 1 A deposit of Swedish clay is 15 m thick drained at both top and bottom. The coefficient of consolidation for the clay layer was estimated to be 1 x 10 cm/sec from laboratory test. The ultimate consolidation settlement (Sc) was calculated under the applied load in the field and was found 80 cm. Find the following: a) How long would it take for settlement of 40 cm and 70...
Two undisturbed clay samples were taken from the middle of the overconsolidated and normally consolidated clay layers in the soil profile shown. The water table is at the top of the overconsolidated clay layer. Consolidation tests were carried out on the two samples and the results are summarized in the table below. Assume that the bulk, dry, and saturated unit weights of the sand are 16 kN/m3, 16 kN/m3 and 19 kN/m3, respectively. The specific gravity of the clay soil...
For the proposed fill shown assume the ultimate consolidation settlement of the soft clay layer is 1.6 ft. The owner wants to build a structure on top of the fill. The structure can withstand a total settlement of 4 in. How long must the owner wait after placement of the fill before building the structure on top of the fill? Use the simplified method. Assume all consolidation occurs in the soft clay layer. Proposed fill 120 lb/t 20ft Silty sand...
Problem 3: You are reviewing the footing design for a hospital founded on clay soils. The code requires factor of safety to be minimum 3. The controlling column load is 130 kips. The proposed footing is square with a width of 5 ft. It is founded at a depth of 3 ft in a medium to stiff clay with undrained shear strength of 1100 lb/ft2 and y-127.4 lb/ft3. The groundwater table is at a depth of 2 ft. Is this...
Define “Fat Clay” and “Lean Clay”