A W 12 x 65 is used as a beam which has full lateral bracing. It has a span of 8 m. Prop. of W 12x 65 d = 307.85 mm ; Zx = 1586 x 103 mm3 bf = 304.80 mm ; Fy = 345 MPa tf = 15.37 mm ; E = 200000 MPa tw = 9.91 mm ; DL = 12 kN/m Sx = 1440 x 103 mm3 ; Sy = 477 x 103 mm3 a) Determine the flexural design stress of the beam. (ANS: Mn=483.33kN.m) b) Determine the safe concentrated live load at the center that this beam could support. Resistance factor ø = 0.90. (ANS: PLL=115.04kN) c) Determine the yield moment of the beam. (ANS: My=496.8kN.m)
A W 12 x 65 is used as a beam which has full lateral bracing. It has a span of 8 m. Prop. of W 12x 65 d = 307.85 mm ; Zx = 1586 x 103 mm3 bf = 304.80 mm ; Fy = 345 MPa tf = 15.37 mm ; E = 200000 MPa tw = 9.91 mm ; DL = 12 kN/m Sx = 1440 x 103 mm3 ; Sy = 477 x 103 mm3 a) Determine the flexural design stress of the beam. (ANS: Mn=483.33kN.m) b) Determine the safe concentrated live load at the center that this beam could support. Resistance factor ø = 0.90. (ANS: PLL=115.04kN) c) Determine the yield moment of the beam. (ANS: My=496.8kN.m)
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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A W 12 x 65 is used as a beam which has full lateral bracing. It has a span of 8 m.
Prop. of W 12x 65
d = 307.85 mm ; Zx = 1586 x 103 mm3
bf = 304.80 mm ; Fy = 345 MPa
tf = 15.37 mm ; E = 200000 MPa
tw = 9.91 mm ; DL = 12 kN/m
Sx = 1440 x 103 mm3 ; Sy = 477 x 103 mm3
a) Determine the flexural design stress of the beam. (ANS: Mn=483.33kN.m)
b) Determine the safe concentrated live load at the center that this beam could
support. Resistance factor ø = 0.90. (ANS: PLL=115.04kN)
c) Determine the yield moment of the beam. (ANS: My=496.8kN.m)
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