2. The compression member shown is pinned at both ends and supported in the weak direction at mid-height. A service load of 400 kips, with equal parts of dead and live load, must be supported. Use Fy = 50 ksi and select the lightest W-shape. 400 I 18′

2. The compression member shown is pinned at both ends and supported in the weak direction at mid-height. A service load of 400 kips, with equal parts of dead and live load, must be supported. Use Fy = 50 ksi and select the lightest W-shape. 400 I 18′

Steel Design (Activate Learning with these NEW titles from Engineering!)

6th Edition

ISBN:9781337094740

Author:Segui, William T.

Publisher:Segui, William T.

Chapter4: Compression Members

Section: Chapter Questions

Problem 4.7.3P

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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

2. The compression member shown is pinned at both ends and
supported in the weak direction at mid-height. A service load of
400 kips, with equal parts of dead and live load, must be
supported. Use Fy = 50 ksi and select the lightest W-shape.
400
O
H
K
18'

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