The billboard shown weights 32 kN and is supported by a struc-tural tube that has a 380-mm outer diameter and a 12-mm wall thickness. Ata time when the resultant of the wind pressure is 12 kN located at the centerC of the billboard, determine the shearing stresses at point H.1.8 m0.9 m2.7 m32 kN12 kN0.9 m0.9 mH24 m0.6 m

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tural tube that has a 380-mm outer diameter and a 12-mm wall thi a time when the resultant of the wind pressure is 12 kN located at C of the billboard, determine the shearing stresses at point H.

Principles of Foundation Engineering (MindTap Course List)

9th Edition

ISBN:9781337705028

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter16: Lateral Earth Pressure

Section: Chapter Questions

Problem 16.2P

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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

The billboard shown weights 32 kN and is supported by a struc-
tural tube that has a 380-mm outer diameter and a 12-mm wall thickness. At
a time when the resultant of the wind pressure is 12 kN located at the center
C of the billboard, determine the shearing stresses at point H.
1.8 m
0.9 m
2.7 m
32 kN
12 kN
0.9 m
0.9 m
H
24 m
0.6 m

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