of A573 Grade 60 (F, = 415 MPa) steel is used as a compression member. It is 7 m long, fixed at the top and bottom, and has additional support in the weak direction 3 m from the top. Properties of the section are: A = 14,500 mm? , Lx = 258.6 x 10° mm', I, = 84.375 x 10° mm* Calculate the critical slenderness ratio of the member. A. 26.208 B. 45.882 C. 36.706 D. 27 529
of A573 Grade 60 (F, = 415 MPa) steel is used as a compression member. It is 7 m long, fixed at the top and bottom, and has additional support in the weak direction 3 m from the top. Properties of the section are: A = 14,500 mm? , Lx = 258.6 x 10° mm', I, = 84.375 x 10° mm* Calculate the critical slenderness ratio of the member. A. 26.208 B. 45.882 C. 36.706 D. 27 529
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Question
A W12x79 of A573 Grade 60 (F, = 415 MPa) steel is used as a compression
member. It is 7 m long, fixed at the top and bottom, and has additional support in
the weak direction 3 m from the top. Properties of the section are: A = 14,500
mm? , Lx = 258.6 x 10° mm', I, = 84.375 x 10° mm*
Calculate the critical slenderness ratio of the member.
A. 26.208
B. 45.882
C. 36.706
D. 27 529
2
3.
Calculate the nominal axial load capacity of the column
A. 3 104 kN
B. 4 851 kN
C. 4 213 kN
D.5 344 kN
Calculate the service axial dead load if the service axial live load is twice as
that of the dead load. Use LRFD
A. 1 354 kN
B. 992 kN
C. 1 093 kN
D. 634 kN
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