A water tower is constructed on a circular raft 4 m in diameter at a depth of 2 m below the ground surface in sand havingbulk unit weight of 18 kN/m³. The gross pressure at the base of the raft is 150 kN/m. What will be the increase in verticalstress at a point 3 m beneath the centre of the raft?

Answered: Image /qna-images/answer/15150d00-c039-46ea-9e2d-a623dd6073fc.jpg

A water tower is constructed on a circular raft 4 m in diameter at a depth of 2 m below the ground surface in sand having bulk unit weight of 18 kN/m. The gross pressure at the base of the raft is 150 kN/m. What will be the increase in vertical stress at a point 3 m beneath the centre of the raft?

A water tower is constructed on a circular raft 4 m in diameter at a depth of 2 m below the ground surface in sand having bulk unit weight of 18 kN/m. The gross pressure at the base of the raft is 150 kN/m. What will be the increase in vertical stress at a point 3 m beneath the centre of the raft?

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 point load Q = 250 kN is applied to the ground surface. What is the minimum depth Zi in m below the point load such as the increase in vertical total stress does not exceed 10 kPa. Do not consider any eccentricity for this question. (Acceptable tolerance = 2%).
Problem 3 Determine the increase in vertical stress at a depth of 2m in the soil below point A due to the foundation shown below. The load due to the foundation is 100 kN/m². A. 5m 2m
A uniformly distribute line load of 500 kN/m is acting on the ground surface. Based on Boussinesq's theory the ratio of vertical stress at a depth 2 m to that at 4 m, right below the line of loading is.
A clay layer 5.61 m. thick rests beneath a deposit of submerged sand 6.16 m. thick. The top of the sand is located 2.2 m. below the surface of a lake. The saturated unit weight of sand is 20 kN/m3 and of clay is 19 kN/m3. Determine the total vertical stress at mid-height of the clay layer.
Pointloads of A= 600 KN, B= 750 KN, and C= 1000KN, determine the increasein vertical stress ,A62= at point D with a vertical depth of 5.00 meters. u = 0.35 10 m A 8 m 6 m
A tank of total height 5 m is filled with sand of thickness 3.5 m having void ratio and specific gravity of 0.65 and 2.78, respectively. Remaining portion of tank is filled with water. The pressure head at the bottom of tank is 7.2 m. Assume unit weight of water is 10 kN/m³. The effective stress at a point 3 m below the top of the tank is kPa. (Round off to two decimal places).
The area shown in the figure carries a uniform pressure of 200 kPa. Find the total vertical effective stress at 5 meter below points A and B. Ysa 19 kN/m³ 8 m 5 m 7 m 6 m
Note:hand written solution should be avoided.
A vertical load of 260 kN is applied to a 1.2 m * 1.2 m area at the ground surface that islevel. Compute the induced vertical stress, ∆sz, at a point 1.5 m below the corner of thissquare loaded area.
A level ground surface exists in an area where soil in the underlying stratum has a wet unit weight of 19 kN/m3. The vertical pressure at any depth represents the major principal stress. The vertical pressure (stress) is the product of the soil unit weight and depth. The lateral pressure at a corresponding depth is 0.45 times the vertical pressure and represents the minor principal stress. (a) Determine the principal stresses acting at a depth 4 m below the surface, and draw the Mohr’s circle for the condition. (b) What is the maximum shear stress acting at this depth?
2. Find the induced stress at point B at depth 20 ft below the surface. The bearing pressure on the area is 400 psf. 40 ft 35 ft 70 ft