W 280 x 102,8 Acindar · Weight & Dimensions

Acindar, 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 280 x 102,8 (México) · Doble T 280 x 102,8 (Argentina / LATAM) · UB 280 (UK / Australia)

The W 280 x 102,8 steel profile weighs 102.8 kg/m (69.11 lb/ft), has a depth of 280 mm (11.02 in), flange width 280 mm (11.02 in). Cross-sectional area: 13,136.443 mm². Moment of inertia Ix = 19,270.273 cm⁴, Iy = 6,594.522 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	280 mm	11.02 in
Width (b)	280 mm	11.02 in
Web thickness (tw)	10.5 mm	0.41 in
Flange thickness (tf)	18 mm	0.71 in
Fillet radius (r)	24 mm	0.94 in
Weight	102.8 kg/m	69.11 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	13,136.44 mm²	20.361 in²
Moment of inertia (Ix)	19,270.27 cm⁴	462.97 in⁴
Moment of inertia (Iy)	6,594.52 cm⁴	158.43 in⁴
Elastic section modulus (Sx)	1,376.45 cm³	83.996 in³
Elastic section modulus (Sy)	471.04 cm³	28.745 in³
Plastic section modulus (Zx)	1,534.43 cm³	93.637 in³
Plastic section modulus (Zy)	717.57 cm³	43.789 in³
Radius of gyration (rx)	12.11 cm	4.768 in
Radius of gyration (ry)	7.09 cm	2.789 in