3. A Cone Penetration Test result were given in the table below. A. Plot the cone penetration test data (CPT) along the depth including the Friction ratio (FR) B. Indicate the soil classification with depth C. Estimate angle of shearing resistance of the soil (6) at depth 7.5 m (You should use the Robertson and Campanella, 1983 graphs in the reference text book for B and C) Depth (m) qe (MPa) fs (kPa) fr (%) Soil Classification 0.5 1.86 22.02 1.5 1.16 28.72 2.5 2.28 24.89 3.5 0.29 12.44 4.5 0.38 15.32 5.5 0.40 14.74 6.5 6.90 28.72 7.5 9.20 26.81 8.5 8.45 43.09 9.5 9.50 34.60 NOTE : Assume an average y = 16.5 kN/m' to GWT at depth at 3m, and yat = 20 kN/m' for below GWT.

3. A Cone Penetration Test result were given in the table below. A. Plot the cone penetration test data (CPT) along the depth including the Friction ratio (FR) B. Indicate the soil classification with depth C. Estimate angle of shearing resistance of the soil (6) at depth 7.5 m (You should use the Robertson and Campanella, 1983 graphs in the reference text book for B and C) Depth (m) qe (MPa) fs (kPa) fr (%) Soil Classification 0.5 1.86 22.02 1.5 1.16 28.72 2.5 2.28 24.89 3.5 0.29 12.44 4.5 0.38 15.32 5.5 0.40 14.74 6.5 6.90 28.72 7.5 9.20 26.81 8.5 8.45 43.09 9.5 9.50 34.60 NOTE : Assume an average y = 16.5 kN/m' to GWT at depth at 3m, and yat = 20 kN/m' for below GWT.

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter12: Subsurface Exploration

Section: Chapter Questions

Problem 12.11P

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Q.
Cone penetrometer soundings were used for the subsurface investigation of a planned construction site. At one sounding location, the value recorded for qc at a depth of 21 feet was 150 ksf. The soil has a unit weight of 115 pcf. Using criteria that relate CPT results and the soil angle of internal friction, estimate the value of f for the sand at the test depth (known from borings).
Q3/ A standard penetration test was carried out at a site. The soil profile is given in Fig. 3 with the penetration values. The average soil data are given for each layer. Compute the corrected values of N60, (N1)60 and o average for sand layers only. Assume: standard 10 sampler, united state safety hammer and diameter of borehole 150mm. Depth (m) 0 12 14 Sand 7-18.5 kN/m 18.5 kN/m Sand 19.81 kN/m 2m +4+E Im N-value
For the attached problem if D50 =0.8 mm, findthe N60 values at each depth. Use Eq attached with Kulhawyand Mayne values for a and c.
3. A Cone Penetration Test result were given in the table below. A. Plot the cone penetration test data (CPT) along the depth including the Friction ratio (FR) B. Indicate the soil classification with depth C. Estimate angle of shearing resistance of the soil () at depth 7.5 m (You should use the Robertson and Campanella, 1983 graphs in the reference text book for B and C) Depth (m) qe (MPa) fs (kPa) fr (%) Soil Classification 0.5 1.86 22.02 1.5 1.16 28.72 2.5 2.28 24.89 3.5 0.29 12.44 4.5 0.38 15.32 5.5 0.40 14.74 6.5 6.90 28.72 7.5 9.20 26.81 8.5 8.45 43.09 9.5 9.50 34.60 NOTE : Assume an average y = 16.5 kN/m' to GWT at depth at 3m, and yut = 20 kN/m' for below GWT.
Solve only if you are 100 % sure, else allow other experts to do , otherwise i will downvote The following series of standard penetration test (SPT) results was obtained in an 18-ft thick stratum of relatively uniform silty sand:
A sand deposit has been identified beneath a site located adjacent to a river. The sand deposit is 15 feet thick and the top of the layer is 12 feet below the ground surface and overlain by a very stiff clay and is undertain by bedrock. The water level has been measured to be at a depth of 10 feet. The standard penetration resistance of the layer has been determined to be 12 blows per foot and a standard sampler was used: a drill rig with a safety hammer with an efficiency of 60% was used. The length of the drill rod is 10 meters and the borehole diameter is 5 inches (127 mm). The design earthquake has been designated as a moment magnitude 6-3/4 event on a nearby fault and the maximum ground acceleration is expected to be 0.40 g The wet unit weight of the clay soils is 150 pounds per cubic foot and the wet unit weight of the sand soils is 180 pounds per cubic foot. The sands have 35% fines content according to a grain size analysis. Compute the factor of safety against liquefaction of…
The following standard penetration test results were obtained in a uniform silty sand:Depth (m) 1 2 3 5N60 12 13 18 15 The groundwater table is at a depth of 2.5 m. Assume a reasonable value for g, then determinef′ for each test. Finally, determine a single design f′ value for this stratum.
sand deposit has been identified beneath a site located adjacent to a river. The sand deposit is 15 feet thick and the top of the layer is 12 feet below the ground surface and overlain by a very stiff clay and is underlain by bedrock. The water level has been measured to be at a depth of 10 feet. The standard penetration resistance of the layer has been determined to be 12 blows per foot and a standard sampler was used; a drill rig with a safety hammer with an efficiency of 60% was used. The length of the drill rod is 10 meters and the borehole diameter is 5 inches (127 mm). The design earthquake has been designated as a moment magnitude 6-3/4 event on a nearby fault and the maximum ground acceleration is expected to be 0.40 g. The wet unit weight of the clay soils is 150 pounds per cubic foot and the wet unit weight of the sand soils is 180 pounds per cubic foot. The sands have 35% fines content according to a grain size analysis. Compute the factor of safety against liquefaction of…
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A sand deposit has been identified beneath a site located adjacent to a river. The sand deposit is 30 feet thick and the top of the layer is 24 feet below the ground surface and overlain by a very stiff clay and is underlain by bedrock. The water level has been measured to be at a depth of 30 feet. The standard penetration resistance of the layer has been determined to be 20 blows per foot and a sampler without liners was used; a drill rig with a safety hammer with an efficiency of 60% was used. The length of the drill rod is 5 meters and the borehole diameter is 7.87 inches (200 mm). The design earthquake has been designated as a moment magnitude 7.5 event on a nearby fault and the maximum ground acceleration is expected to be 0.60 g. The wet unit weight of the clay soils is 200 pounds per cubic foot and the wet unit weight of the sand soils is 250 pounds per cubic foot. The sands have 45% fines content according to a grain size analysis. Determine the cyclic stress ratio, CSR.…
Please help me.. The following table shows the readings from a CBR test, if the standard penetration of 2, 4, 6 and 8 mmhaving plunger loads of 11.5, 17.6, 22.2 and 26.3 kN which corresponds to 100% CBR, determine the CBRfor the tested soil. thank you