After filling the tank shown in Figure 3a, the plane of the major principle stress in element A will be rotated 21.60 ccw from the horizontal axis as shown in Figure 3b. Determine the final stresses on the horizontal and vertical plane. Cylindrical tank of 10 m dia. 9 = 100 kPa Silty sand y=16 kN/m³ ko = 0.5 (a) 5m Figure 3. 01 21.6⁰ (b)

After filling the tank shown in Figure 3a, the plane of the major principle stress in element A will be rotated 21.60 ccw from the horizontal axis as shown in Figure 3b. Determine the final stresses on the horizontal and vertical plane. Cylindrical tank of 10 m dia. 9 = 100 kPa Silty sand y=16 kN/m³ ko = 0.5 (a) 5m Figure 3. 01 21.6⁰ (b)

Structural Analysis

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ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Methods to Determine Vertical Stress

The load applied to the soil is transferred to the underground. The presence of water at soil pores and solid grains above the soil are the primary components that are responsible for the effective load transfer. Due to the load acting, the internal component of the soil or the underground formations undergoes deformations or a tectonic shift. The amount of deformation depends upon the amount of load acting on the soil surface, which indeed, depends on the weight of everything present above the soil. Due to this, the underground soil element develops internal stresses which try to resist the tectonic changes.

Question

After filling the tank shown in Figure 3a, the plane of the major principle stress in element A will be rotated
21.60 ccw from the horizontal axis as shown in Figure 3b. Determine the final stresses on the horizontal and
vertical plane.
Cylindrical tank of 10 m dia.
q= 100 kPa
Silty sand
y =16 kN/m³
ko = 0.5
(a)
5m
Figure 3.
01
K21.6⁰
21.6⁰
(b)

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Step 3: Determining the horizontal and vertical stress acting at depth 5m when rotated by 21.6°

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