TablesK Additional requirements for HSS and box-section connections
Table K3.1
PDF page 231 · AISC 360-22
Available Strengths of Round HSS-to-HSS Truss Connections
| Connection Type | Connection Available Axial Strength |
|---|---|
| General check for T-, Y-, cross-, and K-connections with gap, when Db (tens/comp) < (D - 2t) | Limit state: shear yielding (punching) Pn = 0.6FytDb (1+sinθ)/(2sin2θ) (K3-1) φ = 0.95 (LRFD) Ω = 1.58 (ASD) |
| T- and Y-connections | Limit state: chord plastification Pnsinθ = Fyt2 (3.1 + 15.6β2)γ0.2Qf (K3-2) φ = 0.90 (LRFD) Ω = 1.67 (ASD) |
| Cross-connections | Limit state: chord plastification Pnsinθ = Fyt2 (5.7 / (1-0.81β)) Qf (K3-3) φ = 0.90 (LRFD) Ω = 1.67 (ASD) |
| K-connections with gap or overlap | Limit state: chord plastification (Pnsinθ)compression branch = Fyt2 [2.0 + 11.33 (Db comp / D)] QgQf (K3-4) (Pnsinθ)tension branch = (Pnsinθ)compression branch (K3-5) φ = 0.90 (LRFD) Ω = 1.67 (ASD) |
| Functions | |
| Qg = γ0.2 [1 + (0.024γ1.2) / (exp((0.5g/t) - 1.33) + 1)] (K3-6) | |
| Note that exp(x) is equal to ex, where e = 2.71828 is the base of the natural logarithm. | |