A built-up section consisting of W 350 x 90 which 15 mm plates welded to form a box section as shown in figure. The section is used as a column 12 m meters long carring a deadload of 2000 kN. The column is braced at both ends, and braced at mid height about the weak axis (Y-axis). Use Pu = PD + PLL for allowable axial load and Pu= 1.2 PD + 1.6 Pu for service axial load. Fy 250 Mpa. Properties ; bf = 200 mm Ix = 324 x 106 mm4 tf = 22.5 mm ly = 57.34 x 106 mmª d = 400 mm tw = 15.2 mm y 200 mm 400 mm ++ Is mm 15 mm W 350 x 90 a) Determine the axial live load of the column using the ASD 2015 NSCP. b) Determine the safe service live load of the column using the LRFD 2015 NSCP.

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
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Chapter2: Loads On Structures
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A built-up section consisting of W 350 x 90 which 15 mm plates welded to form a box section as shown in figure.
The section is used as a column 12 m meters long carring a deadload of 2000 kN. The column is braced at both
ends, and braced at mid height about the weak axis (Y-axis). Use Pu = PD + PLL for allowable axial load and Pu = 1.2
PD+ 1.6 Pu for service axial load. Fy =250 Mpa.
Properties ;
bf = 200 mm
Ix = 324 x 106 mmª
tf = 22.5 mm
ly = 57.34 x 106 mm4
d = 400 mm
tw = 15.2 mm
200 mm
400 mm
++
I5 mm
15 mm
W 350 x 90
a) Determine the axial live load of the column using the ASD 2015 NSCP.
b) Determine the safe service live load of the column using the LRFD 2015 NSCP.
Transcribed Image Text:A built-up section consisting of W 350 x 90 which 15 mm plates welded to form a box section as shown in figure. The section is used as a column 12 m meters long carring a deadload of 2000 kN. The column is braced at both ends, and braced at mid height about the weak axis (Y-axis). Use Pu = PD + PLL for allowable axial load and Pu = 1.2 PD+ 1.6 Pu for service axial load. Fy =250 Mpa. Properties ; bf = 200 mm Ix = 324 x 106 mmª tf = 22.5 mm ly = 57.34 x 106 mm4 d = 400 mm tw = 15.2 mm 200 mm 400 mm ++ I5 mm 15 mm W 350 x 90 a) Determine the axial live load of the column using the ASD 2015 NSCP. b) Determine the safe service live load of the column using the LRFD 2015 NSCP.
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