A column section is fabricated by welding a 12 mm x 150 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 6.0 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 design and allowable strength of the built up section based In flexural buckling. (kN) 15012 mmーXN.A466.09 mm

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Answered: 150 12 mm N.A 466.09 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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A column section is fabricated by welding a 12 mm x 150 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 6.0 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 design and allowable strength of the built up section based In flexural buckling. (kN)

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