A W12x79 section is used as partially restrained column for a floor 8 meters high. The steel used is Grade 60 (Fy = 415 MPa). The W12x79 section has a gross cross-sectional area of 14,968 sq.mm, radius of gyration along strong axis is 133.65 mm, and radius of gyration along weak axis is 77 47 mm. Using k = 0.70, Calculate the design axial strength (KN) of the column by LRFD. The nominal compressive strength, Pn, shall be determined based on the limit state of flexural buckling. P₁ = FerAg (505.3-1) The flexural buckling stress, Fer, is determined as follows: 1. when 2. when KL r ≤ 4.71 (or F. ≥ 0.44F,) For - [0.6587|F, KL * >4.71 F (or P, <0.44P,) For=0.877F (505.3-2) (505.3-3)

A W12x79 section is used as partially restrained column for a floor 8 meters high. The steel used is Grade 60 (Fy = 415 MPa). The W12x79 section has a gross cross-sectional area of 14,968 sq.mm, radius of gyration along strong axis is 133.65 mm, and radius of gyration along weak axis is 77 47 mm. Using k = 0.70, Calculate the design axial strength (KN) of the column by LRFD. The nominal compressive strength, Pn, shall be determined based on the limit state of flexural buckling. P₁ = FerAg (505.3-1) The flexural buckling stress, Fer, is determined as follows: 1. when 2. when KL r ≤ 4.71 (or F. ≥ 0.44F,) For - [0.6587|F, KL * >4.71 F (or P, <0.44P,) For=0.877F (505.3-2) (505.3-3)

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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