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Square and Rectangular HSS — AISC 360-22

Design wall per B4.2 (A500: 0.93 × nominal; A1085/A1065: nominal), section properties, axial compression with slender-wall effective width (E3/E7), flexure about both axes (F7: yielding, flange and web local buckling, lateral-torsional buckling), shear (G4) and tension.

Section and material

H (depth) in

B (width) in

Nominal wall in

Material

Effective length Lc ft

Unbraced length Lb (X-X) ft

Results (LRFD)

Design wall · area · weight—

φcPn at Lc—

φbMnx · φbMny—

Flange / web class (X-X) · (Y-Y)—

φvVnx · φvVny—

Tension: yielding · rupture (Ae = 0.75Ag)—

AISC 360-22B4.2, Table B4.1a/B4.1b, E3, E7 (Table E7.1), F7 (F7-1 to F7-11, 2022 linear format of F7-2 and F7-6), G4, D2. Clause numbers only.

VerifiedAISC Companion V16.0 Vol. 2 Tables 6-C/6-D/6-E/6-F: 990 of 991 tabulated shapes identified; tension, shear, major-axis flexure and 21 387 compression values within ±1.4 % (table rounding); weak-axis flexure of very slender flanges up to +3 % (flagged). The A500/A1085 table pairs confirm the 0.93 rule.

Preliminary calculation tool. Final design requires the full text of the referenced standard (see the sources on this page) and review by a licensed PE.