Input
Computed; ≤ 10 per F5.
Results
Web λw = h/tw—
λp_web = 3.76√(E/Fy)—
λr_web = 5.70√(E/Fy)—
Web class—
Rpg—
Mn (compact-flange branch)—
ϕb Mn—
Method
AISC 360 §F5 — applies when h/tw > 5.70√(E/Fy) (slender-web). aw = (h·tw)/(bf·tf), capped at 10. Rpg = 1 − (aw/(1200+300·aw))·(h/tw − 5.70√(E/Fy)) ≤ 1.0. For yielding-of-tension-flange limit state: Mn = Rpg · Fy · Sxt. ϕb = 0.90.