W 309 x 28,6 SAISC · Weight & Dimensions

SAISC, 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 309 x 28,6 (México) · Doble T 309 x 28,6 (Argentina / LATAM) · UB 308.9 (UK / Australia)

The W 309 x 28,6 steel profile weighs 28.6 kg/m (19.20 lb/ft), has a depth of 308.9 mm (12.16 in), flange width 101.9 mm (4.01 in). Cross-sectional area: 3,590.822 mm². Moment of inertia Ix = 5,377.766 cm⁴, Iy = 155.83 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	308.9 mm	12.16 in
Width (b)	101.9 mm	4.01 in
Web thickness (tw)	6 mm	0.24 in
Flange thickness (tf)	8.8 mm	0.35 in
Fillet radius (r)	7.6 mm	0.30 in
Weight	28.6 kg/m	19.20 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	3,590.82 mm²	5.566 in²
Moment of inertia (Ix)	5,377.77 cm⁴	129.20 in⁴
Moment of inertia (Iy)	155.83 cm⁴	3.74 in⁴
Elastic section modulus (Sx)	348.19 cm³	21.248 in³
Elastic section modulus (Sy)	30.58 cm³	1.866 in³
Plastic section modulus (Zx)	403.53 cm³	24.625 in³
Plastic section modulus (Zy)	48.54 cm³	2.962 in³
Radius of gyration (rx)	12.24 cm	4.818 in
Radius of gyration (ry)	2.08 cm	0.820 in