W 14 x 142 is used as a column having a length of 9.21 m. long. It is hinged at the r end and fixed at the lower end but there is a lateral bracing perpendicular to minor axis of the W section at a point 3.52 m. above the bottom support. It is assumed to be pinned connected at the bracing point. Using A 36 steel Fy= 248 MPa the NSCP Specificatioris. E, = 200000 MPa. Properties of W 14 x 142 A = 26967.69 mm2 d= 374.65 mm bf= 393.70 mm tf= 27.00 mm tw= 17.27 mm4 Ix= 695.11 x 106 mm4 Iy = 274.71 x 106 mm4 rx = 160.53 mm rY = 100.84 mm Assume: Kx = 0.80 for 9.21 m. length KY = 1.9 for the length on the upper support KY = 0.80 for the length on the bottom support
W 14 x 142 is used as a column having a length of 9.21 m. long. It is hinged at the r end and fixed at the lower end but there is a lateral bracing perpendicular to minor axis of the W section at a point 3.52 m. above the bottom support. It is assumed to be pinned connected at the bracing point. Using A 36 steel Fy= 248 MPa the NSCP Specificatioris. E, = 200000 MPa. Properties of W 14 x 142 A = 26967.69 mm2 d= 374.65 mm bf= 393.70 mm tf= 27.00 mm tw= 17.27 mm4 Ix= 695.11 x 106 mm4 Iy = 274.71 x 106 mm4 rx = 160.53 mm rY = 100.84 mm Assume: Kx = 0.80 for 9.21 m. length KY = 1.9 for the length on the upper support KY = 0.80 for the length on the bottom support
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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W 14 x 142 is used as a column having a length of 9.21 m. long. It is hinged at the r end and fixed at the lower end but there is a lateral bracing perpendicular to minor axis of the W section at a point 3.52 m. above the bottom support. It is assumed to be pinned connected at the bracing point. Using A 36 steel Fy= 248 MPa the NSCP Specificatioris. E, = 200000 MPa.
Properties of W 14 x 142
A = 26967.69 mm2
d= 374.65 mm
bf= 393.70 mm
tf= 27.00 mm
tw= 17.27 mm4
Ix= 695.11 x 106 mm4
Iy = 274.71 x 106 mm4
rx = 160.53 mm
rY = 100.84 mm
Assume:
Kx = 0.80 for 9.21 m. length
KY = 1.9 for the length on the upper support
KY = 0.80 for the length on the bottom support
Compute the slenderness ratio along x-axis.
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