W 999 x 724,5 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 999 x 724,5 (México) · Doble T 999 x 724,5 (Argentina / LATAM) · UB 999 (UK / Australia)

The W 999 x 724,5 steel profile weighs 724.5 kg/m (486.85 lb/ft), has a depth of 999 mm (39.33 in), flange width 434 mm (17.09 in). Cross-sectional area: 92,293.365 mm². Moment of inertia Ix = 1,492,464.045 cm⁴, Iy = 93,197.143 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	999 mm	39.33 in
Width (b)	434 mm	17.09 in
Web thickness (tw)	38.1 mm	1.50 in
Flange thickness (tf)	68.1 mm	2.68 in
Fillet radius (r)	19 mm	0.75 in
Weight	724.5 kg/m	486.85 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	92,293.37 mm²	143.055 in²
Moment of inertia (Ix)	1,492,464.05 cm⁴	35856.45 in⁴
Moment of inertia (Iy)	93,197.14 cm⁴	2239.06 in⁴
Elastic section modulus (Sx)	29,879.16 cm³	1823.346 in³
Elastic section modulus (Sy)	4,294.8 cm³	262.086 in³
Plastic section modulus (Zx)	34,736.13 cm³	2119.737 in³
Plastic section modulus (Zy)	6,733.85 cm³	410.927 in³
Radius of gyration (rx)	40.21 cm	15.832 in
Radius of gyration (ry)	10.05 cm	3.956 in