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Vertical load capacity?
Posted by Jim Westman on December 15, 2011 at 3:04 PM.

Hello all,

I am currently building a small steel structure using a 9-foot high 4×4-inch square tubing, mild steel, 1/4-inch thick, to vertically support another non-moving horizontal beam.

I am desperately trying to find a place/chart/website/anything that can give me a rough idea if I am relatively safe in terms of vertical load capacity of the 4×4 post (it’s plum).

The load will potentially be as much as 5,000 pounds.

Any help would be so much appreciated.

Thank you in advance.

One Response to “Vertical load capacity?”

  1. gubtoop

    Given: HSS4×4x1/4" (Fy=46 ksi)KL = 9 feetP = 5,000 lbs. = 5 kipsAISC - American Institute of Steel Construction, Steel Construction Manual, Fourteenth Edition, Part 4 - Design of Compression Members, Page 4-63, Table 4-4 (continued). Solution: 66.1 kips (ASD method) 

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