For the beam shown, determine the following: a. Flexural stress at the edge of the topmost fiber at the midspan of the beam. b. Flexural stress at the edge of the lowest fiber at the midspan of the beam. 625 mm |G(2) kN/m 100 mm 500 mm A 恋B L(1) m 100 mm

For the beam shown, determine the following: a. Flexural stress at the edge of the topmost fiber at the midspan of the beam. b. Flexural stress at the edge of the lowest fiber at the midspan of the beam. 625 mm |G(2) kN/m 100 mm 500 mm A 恋B L(1) m 100 mm

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Braced cuts

The braced cut is a method of providing lateral support to the soil in foundation trenches, to prevent the trenches from deformation by the caving in of soil and resisting it from moving laterally. During shallow excavation in firm soil, generally, slopes are provided to resist the caving in of soil. During shallow excavation in soft soil and deep excavation, the chances of caving in of soil increase. Hence, it becomes necessary to make a provision to resist the deformation of trenches due to caving in of soil. The braced cut is the method used for such conditions. The excavation using braced cuts is a bit uneconomical as compared to the traditional open-cut excavation method but provides better safety than the cut excavation method.

Question

Given: 10 kN/m and 6 m

4. For the beam shown, determine the following:
a. Flexural stress at the edge of the topmost fiber at the midspan of the beam.
b. Flexural stress at the edge of the lowest fiber at the midspan of the beam.
625 mm
|G(2) kN/m
100 mm
500 mm
A
态B
L(1) m
100 mm

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Step 1- Introduction

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Step 2- Support reaction:

VIEW

Step 3- Location of neutral axis (NA) and moment of inertia of cross-section about NA:

VIEW

Step 4- Bending moment at midspan of the beam:

VIEW

Step 5- Flexural stress at topmost fiber at midpsan:

VIEW

Step 6- Flexural stress at lowest fiber at midpsan:

VIEW

Step 7- Results:

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