2. A square footing is shown in Figure 16.20. Determine the gross allowable load, Qall, that the footing can carry. Use Terzaghi's equation for general shear failure (F, 3). Given: y = 105 Ib/ft, y 118 lb/ft', c' 0, 35°, B = 5 ft, D, = 4 ft, and h = 2 ft. Unit weight of soil y Groundwater table

2. A square footing is shown in Figure 16.20. Determine the gross allowable load, Qall, that the footing can carry. Use Terzaghi's equation for general shear failure (F, 3). Given: y = 105 Ib/ft, y 118 lb/ft', c' 0, 35°, B = 5 ft, D, = 4 ft, and h = 2 ft. Unit weight of soil y Groundwater table

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

A square footing is to be constructed on a sitly sand soil, as shown in the figure below. The groundwater table is at depth 15 m below the ground surface. Compute the ultimate bearing capacity and the column load required to produce a bearing capacity failure. ć= 8 kPa Solution: $ = 30 ý = 19 1 m. kN m³ 0.6 m-
1. A continuous footing is shown in the figure below. Using Terzaghi's ultimate b.c. equation and bearing capacity factors, determine the gross allowable load per unit area (qall) that the footing will carry. Given: y = 112 pcf, c' = 450 psf, ' = 22°, D = 4 ft, B = 3 ft, and F.S. = 3. gall Unit weight of soil y c' $' 2. Repeat problem #1 using the general bearing capacity equation. Use the appropriate assumptions
tion 17 A circular footing is 3.1 meters in diameter The bottom of the footing is 2.51 m. below the ground surface. Moist unit weight of soil is 17.93 kN/m3, Saturated unit weight is 20.68 kN/m3. Cohesion of soil is 90 kPa Use Nc = 25.23, Nq = 12.87 Ny = 8.21. If the ground water table is located at a depth of 1.85 meters from the ground surface, determine the allowable load (in kN) that the footing can carry FS3. Round off to two decimal places. Activate Windows Go to Settings to activate Windows A Moving to another question will save this response. «< Question 17 of 20 ASUS 3. OP E R- Y] F H. K B
A strip footing is to be designed to support a dead load of 500 kN/m and an imposed load of 300 kN/m at a depth of 0.7 m in a gravelly sand. Characteristic values of the shear strength parameters are c' = 0 and ϕ' =40˚. (a) Determine the required width of the footing if a factor of safety of 3.0 and assuming that the water table may rise to foundation level. (b) Would a foundation of that width satisfy the bearing resistance limit state? The unit weight of the sand above the water table is 17 kN/m3 and below the water table the saturated unit weight is 20 kN/m3.
). A circular footing 3 m in diameter is shown below. 6. [Soil Bearing Capacity] (* Assume the general shear failure and use a factor of safety 2.8. Determine the follow N. = 25. 13 , Nq = 12.72, N, = 8.34 a. The gross allowable bearing capacity. b. Net Allowable bearing capacity c. The safe load that the footing can carry. Ground surface Y= 18.5 kN/m? C = 80 kPa = 25° 1.1 m D,- 1.8 m Water table Ye = 19.2 kN/m? Diameter = 3m
A continuous footing with a B = 7.5ft is constructed with a Df of 3ft in a soil with the following properties: c' = 210 lb/ft? Y = 115 lb/ft³ Ø' = 25° If bedrock exists 6ft below grade use equation 7.2 to determine the ultimate bearing capacity.
Q: A rigid shallow footing has the dimension of 1m x 1m, shown in the following figure. The depth of footing, mechanical properties of supporting soil and the load transmitted through the footing are shown in the figure. Determine shape factor (Is) and depth factor (I). 500 mm E,= 6500 kN/m² H₂=0.3 E, - 5000 kN/m² 1₂ = 0.3 E, 10000 kN/m = H₂ = 0.3 Ao = 200 kN/m² 0.0 m 3.0 m 5.0 m 8.0 m
4. A square footing shown has a dimension of 1 x 1 m. has its bottom 2.5 m. below the ground surface. Angle of friction of the soil foundation is 30°. Unit weight of soil is 18.1 kN/m³ with a cohesion of 15.7 kN/m². Saturated unit weight of soil is 19.3 kN/m³ and F.S. is 3.0 a. Compute the value of the bearing capacity factor Nq. b. Compute the net allowable load that the footing could carry if the ground water table is located 0.20 m. below the foundation footing. c. Compute the net allowable load that the footing could carry if the ground water table is located 1.2 m below the ground surface. 25m B=1.0 m Ground surface C=157 KP -30 Y 18.1 kN/m Year 19.3 kN/m
A square footing 3 m x 3 m is supporting an axial load of 650 kN. The weight of the soil is aasumed to be 17.32 kN/m^3. Compute the vertical stress increment due to this load at a depth of 1.5 m below the center of the footing using the approximate method. a. 51.46 kPa b. 32.10 kPa c. 76.54 kPa d. 50.56 kPa
Question 25 A circular footing is 2.81 meters in diameter. The bottom of the footing is 2.88 m. below the ground surface. Moist unit weight of soil is 17.87 kN/m3, Saturated unit weight is 20.26 kN/m3. Cohesion of soil is 92 kPa. Use Nc = 25.3, Nq = 12.19, Ny = 8.64. If the ground water table is located at a depth of 1.4 meters from the ground surface, determine the allowable bearing capacity (in kPa) that the footing can carry. FS = 2. Round off to two decimal places.
For general c- soil, cohesion c is 50 kPa, the total unit weight y. is 20 kN/m3 and the bearing capacity factors are N= 8 and = 3 and N, = 2. Using Terzaghi's formula. Na Calculate the net ultimate bearing capacity for a strip footing of width B=2m at depth z = 1 m. Considering shear failure only, estimate the safe total load on a footing 10m long by 2m wide strip footing using a factor of safety of 3. %3D
A 3-foot square footing has its bottom 2.36 feet below the ground surface. The groundwater table is located at a depth of 4 feet below the ground surface. Unit weight of soil is 117 lb/ft3, saturated unit weight is 123 lb/ft3, cohesion 98 lb/ft3. Use angle of internal friction =30°. Nc = 35.4, Nq = 29.5, Ny = 19). Compute the allowable load that the footing could carry. Use FS = 2.9