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MBA, Ph.D in Management
Harvard university
Feb-1997 - Aug-2003
Professor
Strayer University
Jan-2007 - Present
Question 2 – Effective lengths and compression check
The plan of a two-storey building, the orientation of the columns and elevation of the frames
on different gridlines are shown in Figure 2. Determine the maximum design compressive
capacity (pure compression) for columns A-1 and A-2 (gridlines A and 1, and A and 2
respectively) on the ground floor according to AS4100. All columns are 250 UC 89.5 sections
(Grade 350) and all beams are 360 UB 56.7 sections (Grade 350). All beam-to-column
connections in the East-West direction are rigid and the beam-to-column and beam-to-shear
wall connections are pins. The column-to-footing connections in both planes are fixed.
(Hint: Buckling in both directions needs to be considered, with the effective length obtained
using the γ method). Figure 2.
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