W 571 x 128,8 Arval · Weight & Dimensions

Arval, 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 571 x 128,8 (México) · Doble T 571 x 128,8 (Argentina / LATAM) · UB 571 (UK / Australia)

The W 571 x 128,8 steel profile weighs 128.8 kg/m (86.57 lb/ft), has a depth of 571 mm (22.48 in), flange width 300 mm (11.81 in). Cross-sectional area: 16,405.779 mm². Moment of inertia Ix = 91,871.938 cm⁴, Iy = 6,993.438 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	571 mm	22.48 in
Width (b)	300 mm	11.81 in
Web thickness (tw)	12 mm	0.47 in
Flange thickness (tf)	15.5 mm	0.61 in
Fillet radius (r)	27 mm	1.06 in
Weight	128.8 kg/m	86.57 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	16,405.78 mm²	25.429 in²
Moment of inertia (Ix)	91,871.94 cm⁴	2207.22 in⁴
Moment of inertia (Iy)	6,993.44 cm⁴	168.02 in⁴
Elastic section modulus (Sx)	3,217.93 cm³	196.371 in³
Elastic section modulus (Sy)	466.23 cm³	28.451 in³
Plastic section modulus (Zx)	3,623.06 cm³	221.094 in³
Plastic section modulus (Zy)	724.47 cm³	44.210 in³
Radius of gyration (rx)	23.66 cm	9.317 in
Radius of gyration (ry)	6.53 cm	2.570 in