W 78 x 5,0 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 78 x 5,0 (México) · Doble T 78 x 5,0 (Argentina / LATAM) · UB 78 (UK / Australia)

The W 78 x 5,0 steel profile weighs 5.0 kg/m (3.37 lb/ft), has a depth of 78 mm (3.07 in), flange width 46 mm (1.81 in). Cross-sectional area: 637.54 mm². Moment of inertia Ix = 64.378 cm⁴, Iy = 6.853 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	78 mm	3.07 in
Width (b)	46 mm	1.81 in
Web thickness (tw)	3.3 mm	0.13 in
Flange thickness (tf)	4.2 mm	0.17 in
Fillet radius (r)	5 mm	0.20 in
Weight	5.0 kg/m	3.37 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	637.54 mm²	0.988 in²
Moment of inertia (Ix)	64.38 cm⁴	1.55 in⁴
Moment of inertia (Iy)	6.85 cm⁴	0.16 in⁴
Elastic section modulus (Sx)	16.51 cm³	1.007 in³
Elastic section modulus (Sy)	2.98 cm³	0.182 in³
Plastic section modulus (Zx)	18.98 cm³	1.158 in³
Plastic section modulus (Zy)	4.69 cm³	0.286 in³
Radius of gyration (rx)	3.18 cm	1.251 in
Radius of gyration (ry)	1.04 cm	0.408 in