W 310 x 79,0 CISC · Weight & Dimensions

CISC, hot-rolled sections · 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.

Also known as: IPR 310 x 79,0 (México) · Doble T 310 x 79,0 (Argentina / LATAM) · UB 306 (UK / Australia)

The W 310 x 79,0 steel profile weighs 79.3 kg/m (53.28 lb/ft), has a depth of 306 mm (12.05 in), flange width 254 mm (10.00 in). Cross-sectional area: 10,045.782 mm². Moment of inertia Ix = 17,665.581 cm⁴, Iy = 3,990.404 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	306 mm	12.05 in
Width (b)	254 mm	10.00 in
Web thickness (tw)	8.8 mm	0.35 in
Flange thickness (tf)	14.6 mm	0.57 in
Fillet radius (r)	15 mm	0.59 in
Weight	79.3 kg/m	53.28 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	10,045.78 mm²	15.571 in²
Moment of inertia (Ix)	17,665.58 cm⁴	424.42 in⁴
Moment of inertia (Iy)	3,990.4 cm⁴	95.87 in⁴
Elastic section modulus (Sx)	1,154.61 cm³	70.459 in³
Elastic section modulus (Sy)	314.21 cm³	19.174 in³
Plastic section modulus (Zx)	1,275.27 cm³	77.822 in³
Plastic section modulus (Zy)	477.82 cm³	29.159 in³
Radius of gyration (rx)	13.26 cm	5.221 in
Radius of gyration (ry)	6.3 cm	2.481 in