A W12x79 of A573 Grade 60 (Fy = 415 MPa) steel is used as a compression member.  It is 7 m long, pinned at the top fixed at bottom, and has additional support in the weak direction 3 m from the top.  Properties of the section are as follows:          A = 14,500 mm^2         Ix = 258.6 x 10^6 mm^4         Iy = 84.375 x 10^6 mm^4

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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A W12x79 of A573 Grade 60 (Fy = 415 MPa) steel is used as a compression member.  It is 7 m long, pinned at the top fixed at bottom, and has additional support in the weak direction 3 m from the top.  Properties of the section are as follows:

         A = 14,500 mm^2

        Ix = 258.6 x 10^6 mm^4

        Iy = 84.375 x 10^6 mm^4

1. calculate the nominal axial load capacity of the column

a. 3104 kN

b. 4851 kN

c. 4213 kN

d. 5344 kN

2. calculalte the service axial dead load if the service axial live load is twice as that of the dead load. Use LRFD.

a. 1354 kN

b. 992 kN

c. 1093 kN

d. 634 kN

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