A 3m diameter circular footing is transmitting a concentrated load of 1500KN. A). Determine the bearing pressure exerted by this footing into the supporting soil. B). Determine the increase in the vertical stress at a depth of 3m directly below the center of the footing. C). Determine the increase in the vertical stress at a depth of 6m which is located at 2m radially from the center of the footing.

A 3m diameter circular footing is transmitting a concentrated load of 1500KN. A). Determine the bearing pressure exerted by this footing into the supporting soil. B). Determine the increase in the vertical stress at a depth of 3m directly below the center of the footing. C). Determine the increase in the vertical stress at a depth of 6m which is located at 2m radially from the center of the footing.

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter8: Stresses In A Soil Mass

Section: Chapter Questions

Problem 8.22P: A flexible circular footing of radius R carries a uniform pressure q. Find the depth (in terms of R)...

See similar textbooks

Similar questions

A 1mx1m square concrete footing carrying a vertical load of 500KN founded on fully saturated clay. Which of the following statement is correct? a. The contact pressure between the footing and the clay is 50 kPa. Ob. The contact pressure between the footing and the clay is 500 kPa O c. The vertical induced stress at 1m depth below the centre of the footing in the clay is more than 500 kPa. Od. The vertical stress increase at 1m depth below the centre of the footing in the clay is 50kPa.
2 m 3m 75 EV 1 m A The footing plan is shown loaded uniformly in a rectangular area. What is the value of the increase of stress of the second or loaded area (Aσ₂) to be subtracted?
A 2.0 m 2.0 m square pad footing will be placed in a normally consolidated clay soil to carry a column load Q. The depth of the footing is 1.0 m. The soil parameters are: c = 0, =26, = 19 kN/m3, cu = 60 kN/m2 (=0 condition). Determine the maximum possible value for Q, considering short-term and long-term stability of the footing.
A clay sanitary pipe is located at a point C below the footing shown below. Determine the increase in the vertical stress Ap at the depth of the pipe, which is z = 5 feet below the footing invert, and 3 feet away from its edge. The footing has a uniformly distributed load q = 1,800 psf. 1,800 5 ft r 2 ft B 10 ft PLAN VIEW 4 ft A T 3 ft 1 9 = B 10 ft SECTION A + 3 ft у с 5 ft
A 2 m wide strip footing is to be placed as shown in figure below, Vertical stress at point A is kN/m² 1m 2m 2 100 kN/m -2m- A
Find the effective stress increase in the soil at a depth of 4 m below the footing, and then find the increase in the stress due to a drop of the WT from originally 1 m below the footing to 5 m below the footing. N = 4,500 KN I L= 5 ml 1 I Depth = 4 mi B- 3 m WT-1 WT
If the given beam section is used for a simply supported beam 5.0 m span, using f'c = 28 MPa and fyt = 420 MPa, calculate the nominal shear strength of concrete, (kN) using simplified formula of NSCP 2015. 10-mm-dia @ 200 mm -275 mm 103.07 77.31 89.26 425 mm Select the correct response: 93.46 t 500 mm 75 mm
Q2) Find the increasing stress (Ao) at point A, at depth 6 m below the corner of the footing of foundation by using Boussinesq equation and attached table. 3m 660 KN 3 m 1.5 m 6m 3x3 m 6m A pint 1.5 m 40. Table 10.8 Variation of , withm and a Tq (10.30) 0.1 02 04 0.5 07 0.0047 0.0092 00132 0.0092 00179 0.029 0.0328 00132 0.0259 00174 0.0174 00222 001 0.087 00242 0.0474 02 0.0328 00474 0.0602 00711 0.0801 0.O873 00629 0.0801 0047 0.1069 0116 04 0.0711 0.0168 00198 0.0222 00242 0.0873 0.1014 Q1168 0.1277 06 07 0.017 00474
A 46-kN axial load P is applied to a short wooden post that is supported by a concrete footingresting on undisturbed soil.a. Determine the maximum size of the footing for which the average bearing stress in the soi is141kPa. b. Determine the maximum bearing stress on the concrete footing.
A rectangular footing of B=3 and L=6 rests at the depth of 2 m below theground level. The stress induced by the footing is 40 kPa. The unit weight of the soil is 18kN/m3and the groundwater table is at a great depth. A pipeline is to be constructed under thefooting. In order to design the strength of the pipeline, calculate the stress increase on thepipeline by using Boussinesq’s Method in the case:a) Pipeline at 5 m below the centerline of the footingb) Pipeline at 5 m below the corner of the footing
2- Determine the stress increase below the center of the footing using both theoretical and approximate methods at the top, middle and bottom of the clay layer. In addition, determine the average stress increase for the clay layer. Dimensions in Heights in m Unit weights in kN/m3 kN m P2 H1 H2 H3 BL Hw 2.5 Yoati 18.0 19.0 3.0 3.0 2.0 16.0 2 3 1174 Load - 0 Hw H1 H2 H3 OSand Clay (hoemally conactiduted)
H← N M 1m QUESTION 2: Check if the base area of 2m x 2m is adequate for the footing under the loading shown in the figure. Allowable soil pressure is 0.25 MPa. N = 900 KN M = 150 kNm H=75kN