A Compute the total load, Qq, in kips, using the Hansen equations, for a footing 4...
A Compute the total load, Qq, in kips, using the Hansen equations, for a footing 4 ft wide by 8 ft long founded on a stratum of sand. The vertical load is uniformly distributed; there is no horizontal load. The value of Dƒ is 3.5 ft, the water table is at the base of the footing, and the friction angle from the triaxial test is 30. For the sand above the base of the footing, the water content is 20%, and the unit weight is 120 pcf. Compute a value of submerged unit weight if needed, assuming specific gravity of the particles of sand to be 2.67.
b. The problem remains the same as in part a except that the footing rests on overconsolidated clay at a depth of 3.5 ft and the footing rests on the clay. Assume the same unit weights as before and determine the undrained shear strength of the clay to yield the value of Qq found in part a.
Homework Answers
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A Compute the total load, Qq, in kips, using the
Hansen equations, for a footing 4...
The total settlement for clay being the elastic settlement plus the primary consolidation settlement. 2. A...
The total settlement for clay being the elastic settlement
plus the primary consolidation settlement.
2. A foundation carrying 150 kips needs to be designed in New Jersey (frost depth 3 ft) for a FOS of 3. The founding soil is deep normally consolidated clay deposit with average Su value of 1100 psf, and saturated unit weight of 130 pcf and a moist unit weight of 110 pcf with water table at 3 ft depth. The laboratory tests performed on undisturbed...
help please A square footing is founded at 3-ft depth below ground surface as shown in...
help please
A square footing is founded at 3-ft depth below ground surface as shown in Fig1, The factored axial load acting on the square footing is 140 kips, Determine the size of the footing (B x B) if the Factor of Safety (F.S.) is 3.0. Ground surface ЗА B-? Silty Sand Fig.1 A 68-ft long pre-stressed concrete pile with square cross section (14 inch) is driven into the soil profile shown in Fig. 2. Compute the ultimate compressive load...
1. Design a wall footing for the following conditions. Service dead load is 6 kips/ft, service...
1. Design a wall footing for the following conditions. Service dead load is 6 kips/ft, service live load is 8 kips/ft. Soil unit weight is 120 lb/ft?. Allowable soil pressure, qa is 4000 psf. The base of the footing is placed 3 ft below the ground surface. Wall is 12 in, thick. Geotechnical analyses have determined the width to be 4 ft. fe' = 3500 psi normal weight concrete, and fy = 60 ksi. Note: you don't need to design...
please i need the correct answer for this queistion because i found in the previous qustion...
please i need the correct answer for this queistion
because i found in the previous qustion the same question with
two diffranet answers and i think there were incorrect
Problem 2 (25 points) An 8x8 ft square footing is embedded at depth 4 ft. The load from column consists of a normal load p- 200 Kips and V- 80 Kips. The soil in the site is a saturated clay with the following properties: undrained shear strength su 1.5 Kip/ft2Y 120pcf....
A) Use phase diagrams to derive the relationship between; S, Co, co, e, P and P° [5] b) A footing...
a) Use phase diagrams to derive the relationship between; S, Co, co, e, P and P° [5] b) A footing is to be located 5ft below ground level, as shown in Figure 2 below. The base of the square footing is 8ft by 8ft and it exerts a total load of 240 tons, which includes column load, weight of footing, and weight of soil surcharge on the footing. Find the total expected primary consolidation settlement for the clay layer 115)...
1. For the foundation shown below: spp 60 kips (Load obtained from structural engineer) G.W.T 몰3...
1. For the foundation shown below: spp 60 kips (Load obtained from structural engineer) G.W.T 몰3ft Poorly Graded Sand (SP): 1m115 pcf (above G.W.T.) Ysat 125 pcf (below G.W.T.) Square footing, 4'x 4 imension Infoma 1-ft x 1-ft square concrete column. 1-ft thick foot" flanges conc 150 pcf Assume weight of reinforcing steel included in unit weight of concrete. Assume compacte weighs the same as in-situ soil d backfil Assume this foundation is being designed for a warehouse that had...
Homework #10 A soil exploration result of a site is shown in the following figure. A...
Homework #10 A soil exploration result of a site is shown in the following figure. A building is to be constructed at that site. First, it has been proposed to raise the elevation of the ground by filling the site with 10 ft thick compacted soil at an area of 25 ft x 25 ft. The unit weight of the compacted moist soil was 120 pcf. The foundation of proposed building was constructed at the center of the compaction area...
Related to (( SOIL MECHANICS )) subject:- Please i need a correct answer of this question,...
Related to (( SOIL MECHANICS )) subject:- Please i need a correct answer of this question, only correct one!!! Please Make A), B), C) too clear. A 7 feet layer of clay is buried beneath a 10 feet stratum of very compact granular soil. Compact sand underlies the clay. The layer of granular soil is composed of material having a unit weight of 130 pcf. The clay unit weight is 105 pcf. A laboratory compression test on a sample of...
please with clear and simple steps as possible, also write answer all questions ....thank you Q1....
please with clear and simple steps as possible, also write
answer all questions ....thank you
Q1. A load of 630 kN/m is carried on a strip footing 3 m wide at a depth of 1.5 m in a stiff clay with saturated unit weight 21 kN/m, the water table being at ground level Determine the factor of safety with respect to general shear failure (a) whe105 kN/m, and φ,-0°, (b) when c' = 10 kNm, and = 28。 13.0, 3.5]...
The total load of a chimney and its circular footing is 35 MN, as shown in...
The total load of a chimney and its circular footing is 35 MN,
as shown in the figure. Assume the average unit weight of soil
below and above the water table is the same.
Presume: B (diameter) = 8 m, H = 6 m, and D = 2
m.
According to SPT results, the average N-value for sandy soil
below the footing is 20.
Estimate the values of the friction angle and the average unit
weight of soil based on...
The total settlement for clay being the elastic settlement
plus the primary consolidation settlement.
2. A foundation carrying 150 kips needs to be designed in New Jersey (frost depth 3 ft) for a FOS of 3. The founding soil is deep normally consolidated clay deposit with average Su value of 1100 psf, and saturated unit weight of 130 pcf and a moist unit weight of 110 pcf with water table at 3 ft depth. The laboratory tests performed on undisturbed...
help please
A square footing is founded at 3-ft depth below ground surface as shown in Fig1, The factored axial load acting on the square footing is 140 kips, Determine the size of the footing (B x B) if the Factor of Safety (F.S.) is 3.0. Ground surface ЗА B-? Silty Sand Fig.1 A 68-ft long pre-stressed concrete pile with square cross section (14 inch) is driven into the soil profile shown in Fig. 2. Compute the ultimate compressive load...
1. Design a wall footing for the following conditions. Service dead load is 6 kips/ft, service live load is 8 kips/ft. Soil unit weight is 120 lb/ft?. Allowable soil pressure, qa is 4000 psf. The base of the footing is placed 3 ft below the ground surface. Wall is 12 in, thick. Geotechnical analyses have determined the width to be 4 ft. fe' = 3500 psi normal weight concrete, and fy = 60 ksi. Note: you don't need to design...
please i need the correct answer for this queistion
because i found in the previous qustion the same question with
two diffranet answers and i think there were incorrect
Problem 2 (25 points) An 8x8 ft square footing is embedded at depth 4 ft. The load from column consists of a normal load p- 200 Kips and V- 80 Kips. The soil in the site is a saturated clay with the following properties: undrained shear strength su 1.5 Kip/ft2Y 120pcf....
a) Use phase diagrams to derive the relationship between; S, Co, co, e, P and P° [5] b) A footing is to be located 5ft below ground level, as shown in Figure 2 below. The base of the square footing is 8ft by 8ft and it exerts a total load of 240 tons, which includes column load, weight of footing, and weight of soil surcharge on the footing. Find the total expected primary consolidation settlement for the clay layer 115)...
1. For the foundation shown below: spp 60 kips (Load obtained from structural engineer) G.W.T 몰3ft Poorly Graded Sand (SP): 1m115 pcf (above G.W.T.) Ysat 125 pcf (below G.W.T.) Square footing, 4'x 4 imension Infoma 1-ft x 1-ft square concrete column. 1-ft thick foot" flanges conc 150 pcf Assume weight of reinforcing steel included in unit weight of concrete. Assume compacte weighs the same as in-situ soil d backfil Assume this foundation is being designed for a warehouse that had...
Homework #10 A soil exploration result of a site is shown in the following figure. A building is to be constructed at that site. First, it has been proposed to raise the elevation of the ground by filling the site with 10 ft thick compacted soil at an area of 25 ft x 25 ft. The unit weight of the compacted moist soil was 120 pcf. The foundation of proposed building was constructed at the center of the compaction area...
please with clear and simple steps as possible, also write
answer all questions ....thank you
Q1. A load of 630 kN/m is carried on a strip footing 3 m wide at a depth of 1.5 m in a stiff clay with saturated unit weight 21 kN/m, the water table being at ground level Determine the factor of safety with respect to general shear failure (a) whe105 kN/m, and φ,-0°, (b) when c' = 10 kNm, and = 28。 13.0, 3.5]...
The total load of a chimney and its circular footing is 35 MN,
as shown in the figure. Assume the average unit weight of soil
below and above the water table is the same.
Presume: B (diameter) = 8 m, H = 6 m, and D = 2
m.
According to SPT results, the average N-value for sandy soil
below the footing is 20.
Estimate the values of the friction angle and the average unit
weight of soil based on...
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