W 278 x 141,5 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 278 x 141,5 (México) · Doble T 278 x 141,5 (Argentina / LATAM) · UB 278 (UK / Australia)

The W 278 x 141,5 steel profile weighs 141.5 kg/m (95.11 lb/ft), has a depth of 278 mm (10.94 in), flange width 265 mm (10.43 in). Cross-sectional area: 18,026.943 mm². Moment of inertia Ix = 24,331.49 cm⁴, Iy = 8,235.734 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	278 mm	10.94 in
Width (b)	265 mm	10.43 in
Web thickness (tw)	15.5 mm	0.61 in
Flange thickness (tf)	26.5 mm	1.04 in
Fillet radius (r)	24 mm	0.94 in
Weight	141.5 kg/m	95.11 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	18,026.94 mm²	27.942 in²
Moment of inertia (Ix)	24,331.49 cm⁴	584.56 in⁴
Moment of inertia (Iy)	8,235.73 cm⁴	197.86 in⁴
Elastic section modulus (Sx)	1,750.47 cm³	106.820 in³
Elastic section modulus (Sy)	621.56 cm³	37.930 in³
Plastic section modulus (Zx)	2,015.3 cm³	122.982 in³
Plastic section modulus (Zy)	950.48 cm³	58.002 in³
Radius of gyration (rx)	11.62 cm	4.574 in
Radius of gyration (ry)	6.76 cm	2.661 in