The horizontal stress at the centroid of a PSC beam of a rectangular section 130 mm × 250 mm is 7.5 N/mm² and the maximum shear force on the beam section is 70 kN. Find the principal tensile stress.

The horizontal stress at the centroid of a PSC beam of a rectangular section 130 mm × 250 mm is 7.5 N/mm² and the maximum shear force on the beam section is 70 kN. Find the principal tensile stress.

Principles of Foundation Engineering (MindTap Course List)

9th Edition

ISBN:9781337705028

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter8: Vertical Stress Increase In Soil

Section: Chapter Questions

Problem 8.6P: Two line loads q1 and q2 of infinite lengths are acting on top of an elastic medium, as shown in...

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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 horizontal stress at the centroid of a PSC
beam of a rectangular section 130 mm × 250
mm is 7.5 N/mm² and the maximum shear force
on the beam section is 70 kN. Find the principal
tensile stress.

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