AISCAISC 360-22
Chapter K Additional requirements for HSS and box-section connections

K5Welds of plates and branches to HSS

PDF page 236 · AISC 360-22

The available strength of branch connections shall be determined considering the nonuniformity of load transfer along the line of weld, due to differences in relative stiffness of HSS walls in HSS-to-HSS connections and between elements in transverse plate-to-HSS connections, as follows:

Rn or Pn = Fnwtwle(K5-1)
Mn-ip = FnwSip(K5-2)
Mn-op = FnwSop(K5-3)

Interaction shall be considered.

  • (a) For fillet welds

ϕ=0.75\phi=0.75 (LRFD) Ω=2.00\quad \Omega=2.00 (ASD)

  • (b) For partial-joint-penetration groove welds

= 0.80 (LRFD) Ω = 1.88 (ASD)