W 299 x 78,4 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 299 x 78,4 (México) · Doble T 299 x 78,4 (Argentina / LATAM) · UB 299.3 (UK / Australia)

The W 299 x 78,4 steel profile weighs 78.4 kg/m (52.70 lb/ft), has a depth of 299.3 mm (11.78 in), flange width 306.4 mm (12.06 in). Cross-sectional area: 9,989.426 mm². Moment of inertia Ix = 16,331.246 cm⁴, Iy = 5,278.413 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	299.3 mm	11.78 in
Width (b)	306.4 mm	12.06 in
Web thickness (tw)	11 mm	0.43 in
Flange thickness (tf)	11 mm	0.43 in
Fillet radius (r)	15.2 mm	0.60 in
Weight	78.4 kg/m	52.70 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	9,989.43 mm²	15.484 in²
Moment of inertia (Ix)	16,331.25 cm⁴	392.36 in⁴
Moment of inertia (Iy)	5,278.41 cm⁴	126.81 in⁴
Elastic section modulus (Sx)	1,091.3 cm³	66.595 in³
Elastic section modulus (Sy)	344.54 cm³	21.025 in³
Plastic section modulus (Zx)	1,209.97 cm³	73.837 in³
Plastic section modulus (Zy)	526.5 cm³	32.129 in³
Radius of gyration (rx)	12.79 cm	5.034 in
Radius of gyration (ry)	7.27 cm	2.862 in