TablesK Additional requirements for HSS and box-section connections
Welds of plates and branches to HSS
PDF page 236 · AISC 360-22
2 tables appear under this heading.
1. PDF page 236
| Rn or Pn = Fnwtwle | (K5-1) |
| Mn-ip = FnwSip | (K5-2) |
| Mn-op = FnwSop | (K5-3) |
2. PDF page 239
| TABLE K5.1 Effective Weld Properties for Connections to Rectangular HSS | |
|---|---|
| Connection Type | Weld Properties |
| Transverse plate T- and cross-connections under plate axial load [Diagram with labels: R, tp, H, t, Bb, B] | Effective weld properties le = 2Be (K5-4) where le = total effective weld length for welds on both sides of the transverse plate, in. (mm) |
| T-, Y-, and cross-connections under branch axial load or bending [Diagram with labels: M or P, tb, Hb, Bb, A, θ, H, t, B, Note: Not present for T- or Y-connection] [Section A-A Diagram with labels: Hb/sinθ, Be/2] Section A-A: Effective weld | Effective weld properties le = 2Hb / sinθ + 2Be (K5-5) Sip = (tw / 3)(Hb / sinθ)2 + twBe(Hb / sinθ) (K5-6) Sop = tw(Hb / sinθ)Bb + (tw / 3)(Be)2 - ((tw / 3)(Bb-Be)3) / Bb (K5-7) When β > 0.85 or θ > 50°, Be/2 shall not exceed Bb/4. |
| Gapped K-connections under branch axial load [Diagram with labels: Hb, tb, A, θ, P, g, +e, H, t, B] [Section A-A Diagram with labels: Hb - 1.2tb / sinθ, Bb - 1.2tb] 4th side effective when θ ≤ 50° Section A-A: Effective weld for ≥ 60° | Effective weld properties When θ ≤ 50° le = 2(Hb - 1.2tb) / sinθ + 2(Bb - 1.2tb) (K5-8) When θ ≥ 60° le = 2(Hb - 1.2tb) / sinθ + Bb - 1.2tb (K5-9) When 50° < θ < 60°, linear interpolation shall be used to determine le. |