Depth
Flange Width
Flange Thickness
Web Thickness
Fillet Radius
Weight
Area
St. Venant Torsional Constant
Warping Constant
Moment of Inertia
Elastic Section Modulus
Plastic Section Modulus
Radius of Gyration
X
Y
Polar
311
40
A992
Fy50 Fu65
ft
ft
ft
Load Type | Flange | Web |
|---|---|---|
| Compression | nonslender | slender |
| Flexure (Major Axis) | compact | compact |
| Flexure (Minor Axis) | compact | Not Applicable |
Case | Description of Element | Width-to-Thickness Ratio | Limiting Width-to-Thickness Ratio λr (nonslender/slender) | Examples | |
|---|---|---|---|---|---|
| Unstiffened Elements | 1 | (1) Flanges of rolled I-shaped sections (2) Plates projecting from rolled I-shaped sections (3) Outstanding legs of pairs of angles connected width continuous contact (4) Flanges of channels (5) Flanges of tees | b/t = 8.7 | = 13.5 | |
2 | (1) Flanges of built-up I-shaped sections (2) Plates or angles legs projecting from built-up I-shaped sections | b/t | |||
3 | (1) Legs of single angle (2) Legs of double angles width separators (3) All other unstiffened elements | b/t | |||
4 | Stems of tees | d/t | |||
| Stiffened Elements | 5 | Webs of doubly symmetric rolled and built-up I-shaped sections and channels | h/tw = 51.1 | = 18.1 | |
6 | Walls of rectangular HSS | b/t | |||
7 | Flange cover plates between lines of fasteners or welds | b/t | |||
8 | All other stiffened elements | b/t | |||
9 | Round HSS | D/t |