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Problem 3: 40 points) A square foundation was decided to be constructed to support the load...
Problem 3: (45 points) A square foundation was decided to be constructed to support the load...
Problem 3: (45 points) A square foundation was decided to be constructed to support the load of a column in a residential building construction project located in Claremont, CA. During the site investigation, only sandy soil (c'=0) was encountered. The ground water was observed at the depth 1.2m from ground level. Obtained samples were tested in the lab and the internal friction angle of the soil was found to be equal to 30°. The unit weight of the soil above...
Question-5 (20%): If a rectangular foundation of a dimension 1 X 1m with a load equal...
Question-5 (20%): If a rectangular foundation of a dimension 1 X 1m with a load equal to 200 kN is placed at Im below the ground level as shown in the figure below. Calculate the maximum elastic settlement and settlement caused by primary consolidation due to the imposed load knowing that the clay is normally consolidated clay Ground level Es (kN/m2) 10000 Yd = 15 kN/m3 3m 5m Sand B000 Hs =0.3 2m Cc = 0.3 Ysat = 20 kN/m...
A 100,000 lb load has to be carried by a concrete square foundation placed 3 ft...
A 100,000 lb load has to be carried by a concrete square foundation placed 3 ft below the surface of a saturated sandy soil having the following properties: γt = 120 pcf E = 2x105 psf φ' = 30deg ν = 0.25 c' = 0 What footing width will be required for a factor of safety with respect to the ultimate bearing capacity of 3.0, and for a maximum settlement of 1". The water table is at the ground surface.
2 A 200 kN column load is to be supported on a 3 m square, 1...
2 A 200 kN column load is to be supported on a 3 m square, 1 m deep spread footing underlain by young, normally consolidated sandy soils. The results of a representative CPT sounding at this site are as follow: Depth (m) qc (kg/cm²) 0.0-4.0 30 4.0-7.0 51 7.0-12.0 65 12.0-16.0 16.0-20.0 59 110 The groundwater table is at a depth of 10 m; the unit weight of the soil is 16 kN /mº above the groundwater table and 18...
Problem 5-Bearing Capacity of Shallow Foundation (20 pts) For a square footing foundation, the following are...
Problem 5-Bearing Capacity of Shallow Foundation (20 pts) For a square footing foundation, the following are given: B 3.0 m (width), D 1.2 m (depth). Y=20 kN/m3, = 32°, c' = 50 kPa, Use Terzaghi Equation and a factor of safety of 2.5 to determine the allowable bearing capacity and the maximum column load to cause bearing capacity failure. Assume that general shear failure occurs in soil. When Oar C S
3-5 The cross-sectional dimension of a concrete retaining wall is shown in Fig 3-34, together with...
3-5 The cross-sectional dimension of a concrete retaining wall is shown in Fig 3-34, together with the soil profile of the ground. If a vertical line load (in- cluding the self weight of the wall) acting on the wall foundation is P = 1000 kN/m and its point of application is 3.83 m to the wall front toe A. The horizontal thrust on the wall back is H =350 kN/m and its point of ap- plication is 3.5m above the...
A high-rise structure is to be built over the soil profile shown below. The proposed rectangular...
A high-rise structure is to be built over the soil profile shown below. The proposed rectangular foundation footprint is 20 m x 40 m and is uniformly loaded with 800 kPa. A piezometer was installed in the ground directly below the center of the foundation at a depth of 10 m (below the ground surface) prior to construction to monitor pore water pressure. Using a unit weight of water equal to 10 kN/m], answer questions 6, 7, 8, 9, 10,...
Problem 7: (30 points) A square foundation, 2.5 x 2.5 m in size, supports a column...
Problem 7: (30 points) A square foundation, 2.5 x 2.5 m in size, supports a column load of 478 kN. The soil characteristics are given in the figure below. A. Estimate the average stress increase in the clay layer due to the applied load. B. Estimate the primary consolidation settlement 478 KN 1.5 m 2.5 m2.5 m 16 km GWT 1.75m 1 IRSIN. W 1996 G-2.71 2-37 - 65 km C-15 C -0.240 7- 20 ANS Sund Clay ty @...
please show step by step (also show how to find the vertical stress increase) 18 A...
please show step by step (also show how to find the vertical stress
increase)
18 A new petroleum storage tank is proposed at an oil refinery to be supported by a 20-meter diameter slab foundation at the ground surface. The structure will produce a uniform load of 110 kN/m2 on the entire slab foundation. A subsurface investigation has revealed the shown soil profile. A series of laboratory tests on representative samples obtained from the clay stratum has resulted in the...
A square column foundation has to carry a gross allowable load of 3500 kN (FS-3). Given:...
A square column foundation has to carry a gross allowable load of 3500 kN (FS-3). Given: D 1.5 m, γ = 17 kN /ms.Ф-34°, and d :0. Use Terzaghi's equation to determine the size of the foundation (B). Assume general shear failure. For = 34°, M-365 and My- 38.04 (Enter your answer to three significant figures.) Im
Problem 3: (45 points) A square foundation was decided to be constructed to support the load of a column in a residential building construction project located in Claremont, CA. During the site investigation, only sandy soil (c'=0) was encountered. The ground water was observed at the depth 1.2m from ground level. Obtained samples were tested in the lab and the internal friction angle of the soil was found to be equal to 30°. The unit weight of the soil above...
Question-5 (20%): If a rectangular foundation of a dimension 1 X 1m with a load equal to 200 kN is placed at Im below the ground level as shown in the figure below. Calculate the maximum elastic settlement and settlement caused by primary consolidation due to the imposed load knowing that the clay is normally consolidated clay Ground level Es (kN/m2) 10000 Yd = 15 kN/m3 3m 5m Sand B000 Hs =0.3 2m Cc = 0.3 Ysat = 20 kN/m...
2 A 200 kN column load is to be supported on a 3 m square, 1 m deep spread footing underlain by young, normally consolidated sandy soils. The results of a representative CPT sounding at this site are as follow: Depth (m) qc (kg/cm²) 0.0-4.0 30 4.0-7.0 51 7.0-12.0 65 12.0-16.0 16.0-20.0 59 110 The groundwater table is at a depth of 10 m; the unit weight of the soil is 16 kN /mº above the groundwater table and 18...
Problem 5-Bearing Capacity of Shallow Foundation (20 pts) For a square footing foundation, the following are given: B 3.0 m (width), D 1.2 m (depth). Y=20 kN/m3, = 32°, c' = 50 kPa, Use Terzaghi Equation and a factor of safety of 2.5 to determine the allowable bearing capacity and the maximum column load to cause bearing capacity failure. Assume that general shear failure occurs in soil. When Oar C S
3-5 The cross-sectional dimension of a concrete retaining wall is shown in Fig 3-34, together with the soil profile of the ground. If a vertical line load (in- cluding the self weight of the wall) acting on the wall foundation is P = 1000 kN/m and its point of application is 3.83 m to the wall front toe A. The horizontal thrust on the wall back is H =350 kN/m and its point of ap- plication is 3.5m above the...
A high-rise structure is to be built over the soil profile shown below. The proposed rectangular foundation footprint is 20 m x 40 m and is uniformly loaded with 800 kPa. A piezometer was installed in the ground directly below the center of the foundation at a depth of 10 m (below the ground surface) prior to construction to monitor pore water pressure. Using a unit weight of water equal to 10 kN/m], answer questions 6, 7, 8, 9, 10,...
Problem 7: (30 points) A square foundation, 2.5 x 2.5 m in size, supports a column load of 478 kN. The soil characteristics are given in the figure below. A. Estimate the average stress increase in the clay layer due to the applied load. B. Estimate the primary consolidation settlement 478 KN 1.5 m 2.5 m2.5 m 16 km GWT 1.75m 1 IRSIN. W 1996 G-2.71 2-37 - 65 km C-15 C -0.240 7- 20 ANS Sund Clay ty @...
please show step by step (also show how to find the vertical stress
increase)
18 A new petroleum storage tank is proposed at an oil refinery to be supported by a 20-meter diameter slab foundation at the ground surface. The structure will produce a uniform load of 110 kN/m2 on the entire slab foundation. A subsurface investigation has revealed the shown soil profile. A series of laboratory tests on representative samples obtained from the clay stratum has resulted in the...
A square column foundation has to carry a gross allowable load of 3500 kN (FS-3). Given: D 1.5 m, γ = 17 kN /ms.Ф-34°, and d :0. Use Terzaghi's equation to determine the size of the foundation (B). Assume general shear failure. For = 34°, M-365 and My- 38.04 (Enter your answer to three significant figures.) Im
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