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Four 3x3x1/2 equal leg angles are laced together as shown in Figure 3 to form a column section. Determine the Euler (elastic) stress and the critical buckling load (kN) for the pin-connected column. E = 200,000 MPa. Proportional limit is 250 MPa. Assume simple span and maximum permissible L/r = 200. a) L = 11.50 m b) L = 9.75 m P ↑ Properties of one 3 X 3 X 1/2 angle A = 1774 mm² Ix = 0.92 x106 mm4 rx = 22.81 mm L y = 23.67 mm k 300 mm 300 mm ly = 0.92 x106 mm4 ry = 22.81 mm x = 23.67 mm

Four 3x3x1/2 equal leg angles are laced together as shown in Figure 3 to form a column section. Determine the Euler (elastic) stress and the critical buckling load (kN) for the pin-connected column. E = 200,000 MPa. Proportional limit is 250 MPa. Assume simple span and maximum permissible L/r = 200. a) L = 11.50 m b) L = 9.75 m P ↑ Properties of one 3 X 3 X 1/2 angle A = 1774 mm² Ix = 0.92 x106 mm4 rx = 22.81 mm L y = 23.67 mm k 300 mm 300 mm ly = 0.92 x106 mm4 ry = 22.81 mm x = 23.67 mm

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
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Four 3x3x1/2 equal leg angles are laced together as shown in Figure 3 to form a column section. Determine the Euler (elastic) stress and the critical buckling load (kN) for the pin-connected column. E = 200,000 MPa. Proportional limit is 250 MPa. Assume simple span and maximum permissible L/r = 200. a) L = 11.50 m b) L = 9.75 m 5↑ Properties of one 3 X 3 X 1/2 angle A = 1774 mm² lx = 0.92 x106 mm4 rx = 22.81 mm L y = 23.67 mm k 300 mm Figure 3 300 mm ly = 0.92 x106 mm4 ry= 22.81 mm x= 23.67 mm
Transcribed Image Text:Four 3x3x1/2 equal leg angles are laced together as shown in Figure 3 to form a column section. Determine the Euler (elastic) stress and the critical buckling load (kN) for the pin-connected column. E = 200,000 MPa. Proportional limit is 250 MPa. Assume simple span and maximum permissible L/r = 200. a) L = 11.50 m b) L = 9.75 m 5↑ Properties of one 3 X 3 X 1/2 angle A = 1774 mm² lx = 0.92 x106 mm4 rx = 22.81 mm L y = 23.67 mm k 300 mm Figure 3 300 mm ly = 0.92 x106 mm4 ry= 22.81 mm x= 23.67 mm
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