Steel Section Catalog
W310x21
AISC — Wide Flange (I-beam)
Wide flange beams (W shapes / I-beams) are the most common structural steel profile used in building construction. They are used for beams, columns, and girders in steel-framed buildings and bridges. Designed per AISC 360, Eurocode 3, and NBR 8800.
The W310x21 steel profile weighs 21.0 kg/m (14.11 lb/ft), has a depth of 303 mm (11.93 in), flange width 101 mm (3.98 in). Cross-sectional area: 2,638.6 mm². Moment of inertia Ix = 3,598.32 cm⁴, Iy = 98.2 cm⁴.
Cross-section (not to scale)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth (h) | 303 mm | 11.93 in |
| Width (b) | 101 mm | 3.98 in |
| Web thickness (tw) | 5.1 mm | 0.20 in |
| Flange thickness (tf) | 5.7 mm | 0.22 in |
| Fillet radius (r) | 7.6 mm | 0.30 in |
| Weight | 21.0 kg/m | 14.11 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 2,638.6 mm² | 4.090 in² |
| Moment of inertia (Ix) | 3,598.32 cm⁴ | 86.45 in⁴ |
| Moment of inertia (Iy) | 98.2 cm⁴ | 2.36 in⁴ |
| Elastic section modulus (Sx) | 237.51 cm³ | 14.494 in³ |
| Elastic section modulus (Sy) | 19.45 cm³ | 1.187 in³ |
| Plastic section modulus (Zx) | 279.57 cm³ | 17.060 in³ |
| Plastic section modulus (Zy) | 30.97 cm³ | 1.890 in³ |
| Radius of gyration (rx) | 11.68 cm | 4.598 in |
| Radius of gyration (ry) | 1.93 cm | 0.760 in |
Beam Calculator— W310x21
3D preview unavailable
Your device does not support WebGL. The 2D diagram below is still fully functional.
mfixed @ 0mfixed @ 6m→kN/m
Results — W310x21
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
2.34 mm
L/2559
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
