A(channel)=9,400mm^2A(wide-flange)=62,200mm^2 Problem#2: (Built-up section using channel and wide flange section)yProperties of the Channel Section:gytw = 8mmx = 12.67mmIox = 6.327 x106 mm4Wide-Flange (next page)gxIay = 0. 362 x106 mm4 Properties of the Wide Flange Section:gytf = 61 mmbfd = 1,050 mmIax = 14.734 x10° mm4Iay = 715.918 x106 mm4gxdtwtf2a. Determine the location of the centroid of the built-up section measured from the top.2b. Determine the moment of inertia of the built-up section with respect to the horizontalaxis of its centroid. (Hint: Use the concept of transfer of moment of inertia.)

Answered: Image /qna-images/answer/4289abed-1e8b-43dc-bcea-c578773febd3.jpg

2a. Determine the location of the centroid of the built-up section measured from the top. 2b. Determine the moment of inertia of the built-up section with respect to the horizontal axis of its centroid. (Hint: Use the concept of transfer of moment of inertia.)

2a. Determine the location of the centroid of the built-up section measured from the top. 2b. Determine the moment of inertia of the built-up section with respect to the horizontal axis of its centroid. (Hint: Use the concept of transfer of moment of inertia.)

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.

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A(channel)=9,400mm^2 A(wide-flange)=62,200mm^2

Problem#2: (Built-up section using channel and wide flange section)
y
Properties of the Channel Section:
gy
tw = 8mm
x = 12.67mm
Iox = 6.327 x106 mm4
Wide-Flange (next page)
gx
Iay = 0. 362 x106 mm4

Properties of the Wide Flange Section:
gy
tf = 61 mm
bf
d = 1,050 mm
Iax = 14.734 x10° mm4
Iay = 715.918 x106 mm4
gx
d
tw
tf
2a. Determine the location of the centroid of the built-up section measured from the top.
2b. Determine the moment of inertia of the built-up section with respect to the horizontal
axis of its centroid. (Hint: Use the concept of transfer of moment of inertia.)

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