A column section is fabricated by welding a 10 mm x 100 mm cover plate to the top of a W 18 x 65. Assume that the components are connected in such a way that the member is fully effective. Length of column is 4.6 m. Properties of W 18 x 65A = 13323 mm2d = 466.09 mmIx = 445 x 106 mm4Iy = 23 x 106 mm4rx = 190.25 mmry = 24.93 mmFy = 345 MPabf = 192,79 mmtf = 19.05 mmtw = 11.43 mmZx = 2179 x 103 mm3a. Determine the critical slenderness ratio of the built-up column section. b. Determine the strength of the built up section based n flexural buckling. (kN in LRFD). 100 mm10 mmN.A466.09 mm

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Answered: 466.09 mm

Engineering Fundamentals: An Introduction to Engineering (MindTap Course List)

5th Edition

ISBN:9781305084766

Author:Saeed Moaveni

Publisher:Saeed Moaveni

Chapter7: Length And Length-related Variables In Engineering

Section: Chapter Questions

Problem 42P

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A column section is fabricated by welding a 10 mm x 100 mm cover plate to the top of a W 18 x 65. Assume that the components are connected in such a way that the member is fully effective. Length of column is 4.6 m.

Properties of W 18 x 65

A = 13323 mm²

d = 466.09 mm

Ix = 445 x 10⁶ mm⁴

Iy = 23 x 10⁶ mm⁴
rx = 190.25 mm

ry = 24.93 mm

Fy = 345 MPa

bf = 192,79 mm

tf = 19.05 mm

tw = 11.43 mm

Zx = 2179 x 10³ mm³

a. Determine the critical slenderness ratio of the built-up column section.

b. Determine the strength of the built up section based n flexural buckling. (kN in LRFD).

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