A W 12 x 65 steel section is used as a compression member. It is 8 m long, pinned connected at each end and has an additional 31) Determine the critical slenderness ratio of x-axis. 32) Determine the critical slenderness ratio of y-axis. support in the weak direction at a point 3.6 m. 33) Determine the nominal compressive strength of the column. (kN)
A W 12 x 65 steel section is used as a compression member. It is 8 m long, pinned connected at each end and has an additional 31) Determine the critical slenderness ratio of x-axis. 32) Determine the critical slenderness ratio of y-axis. support in the weak direction at a point 3.6 m. 33) Determine the nominal compressive strength of the column. (kN)
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Question
Please answer nos. 31, 32 and 33
A=11229
rx=132
ry=73
Fy=382
![A W 12 x 65 steel section is used as a
compression member. It is 8 m long, pinned
connected at each end and has an additional
31) Determine the critical slenderness ratio of x-axis.
32) Determine the critical slenderness ratio of y-axis.
support in the weak direction at a point 3.6 m.
from the top. Assume Kx = Ky = 1.0.
33) Determine the nominal compressive strength of the column. (kN)
34) Determine the design strength of the column (LRFD). (kN)
Prop. of W 12 x 65
35) Determine the allowable strength of the column (ASD). (kN)
A = 11220 + A mm?
d = 307.85 mm
br = 304.80 mm
3.6
t = 15.37 mm
x= 130 + B mm
ry = 65 +C mm
Zz = 1586 x 10° mm³
Z, = 723 x 10° mm³
S. = 1440 x 10° mm³
S, = 477 x 10° mm
m.
4.4 m.
Fy: 350 + Y MPa
E = 200000 MPa
U = 1.2 DL + 1.6 LL
Use LRFD.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F150e2342-171d-4e71-a29f-cfd51b4a6c1b%2Fc34f957e-8499-4b74-aaa6-6b33a307231f%2F18cob6j_processed.jpeg&w=3840&q=75)
Transcribed Image Text:A W 12 x 65 steel section is used as a
compression member. It is 8 m long, pinned
connected at each end and has an additional
31) Determine the critical slenderness ratio of x-axis.
32) Determine the critical slenderness ratio of y-axis.
support in the weak direction at a point 3.6 m.
from the top. Assume Kx = Ky = 1.0.
33) Determine the nominal compressive strength of the column. (kN)
34) Determine the design strength of the column (LRFD). (kN)
Prop. of W 12 x 65
35) Determine the allowable strength of the column (ASD). (kN)
A = 11220 + A mm?
d = 307.85 mm
br = 304.80 mm
3.6
t = 15.37 mm
x= 130 + B mm
ry = 65 +C mm
Zz = 1586 x 10° mm³
Z, = 723 x 10° mm³
S. = 1440 x 10° mm³
S, = 477 x 10° mm
m.
4.4 m.
Fy: 350 + Y MPa
E = 200000 MPa
U = 1.2 DL + 1.6 LL
Use LRFD.
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