2. A column having a length of 7m is to support a dead load of270 kN and a live load of 200 kN.Use Fy = 345 Mpa and E = 200GPa. Select the most economicalsection ifa. both ends are hinged.b. One end is fixed andthe other is hinged.IxIyIx221.9A(mm²) (mm) (mm) (10mm)W12x65 12,323 134.11 76.71W14x43 8,129 147.83 48.01W10x49 9,290 106.68 64.527,419 108.46 50.29178.6113.6W10x3087.4W10x336,265 106.68 49.2871.18↳SectionIy(10 mm)72.818.838.718.715.2

Length of column L =7 mDead Load = 270 KNLive load = 200 KNFy = 345 MpaE = 200 GpaAnswerTo select…

2. A column having a length of 7 m is to support a dead load of 270 kN and a live load of 200 kN. Use Fy = 345 Mpa and E = 200 GPa. Select the most economical section if a. both ends are hinged. b. One end is fixed and the other is hinged Section Ix Ty Ix 221.9 178.6 A (mm²) (mm) (mm) (10mm) W12x65 12.323 134.11 76.71 W14x43 8,129 147.83 48.01 W10x49 9.290 106.68 64.52 W10x30 7,419 108.46 50.29 W10x33 6.265 106.68 49.28 113.6 87.4 71.18 D Iy (10mm) 72.8 18.8 38.7 18.7 15.2

2. A column having a length of 7 m is to support a dead load of 270 kN and a live load of 200 kN. Use Fy = 345 Mpa and E = 200 GPa. Select the most economical section if a. both ends are hinged. b. One end is fixed and the other is hinged Section Ix Ty Ix 221.9 178.6 A (mm²) (mm) (mm) (10mm) W12x65 12.323 134.11 76.71 W14x43 8,129 147.83 48.01 W10x49 9.290 106.68 64.52 W10x30 7,419 108.46 50.29 W10x33 6.265 106.68 49.28 113.6 87.4 71.18 D Iy (10mm) 72.8 18.8 38.7 18.7 15.2

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

6th Edition

ISBN:9781337094740

Author:Segui, William T.

Publisher:Segui, William T.

Chapter8: Eccentric Connections

Section: Chapter Questions

Problem 8.3.9P

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Concept explainers

Bars

In civil engineering, bars refer to steel reinforcement bars or rebars. These are structural members primarily used for reinforcement purposes in masonry works. A bar is characterized by its cross-sectional area, which is negligible compared to its length. Bars are usually manufactured by steel which is uniform throughout the length, or by meshing multiple steel wires. Other materials of the bar include carbon steel, glass fiber, carbon fiber, and basalt fiber. The reinforcing bars are coated with epoxy resins and other materials to enhance some of their properties including corrosion resistance.

Question

2. A column having a length of 7
m is to support a dead load of
270 kN and a live load of 200 kN.
Use Fy = 345 Mpa and E = 200
GPa. Select the most economical
section if
a. both ends are hinged.
b. One end is fixed and
the other is hinged.
Ix
Iy
Ix
221.9
A
(mm²) (mm) (mm) (10mm)
W12x65 12,323 134.11 76.71
W14x43 8,129 147.83 48.01
W10x49 9,290 106.68 64.52
7,419 108.46 50.29
178.6
113.6
W10x30
87.4
W10x33
6,265 106.68 49.28
71.18
↳
Section
Iy
(10 mm)
72.8
18.8
38.7
18.7
15.2

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