COLUMN LIMITATIONS AISC STANDARDS BASIC INFORMATION


Columns shall satisfy the following limitations:

(1) Columns shall be any of the rolled shapes or built-up sections permitted in Section 2.3 of AISC.

(2) The beam shall be connected to the flange of the column.

(3) Rolled shape column depth shall be limited to W36 (W920). The depth of built-up wide-flange columns shall not exceed that for rolled shapes.

Flanged cruciform columns shall not have a width or depth greater than the depth allowed for rolled shapes. Built-up box columns shall not have a width or depth exceeding 24 in. (610 mm). Boxed wide flange columns shall not have a width or depth exceeding 24 in. (610 mm) if participating in orthogonal moment frames.

(4) There is no limit on the weight per foot of columns.

(5) There are no additional requirements for flange thickness.

(6) Width-thickness ratios for the flanges and web of columns shall conform to the limits in Table I–8–1 of the AISC Seismic Provisions.

(7) Lateral bracing of columns shall conform to Section 9.7 or 10.7 for SMF or IMF, as applicable, in the AISC Seismic Provisions.

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