W 840 x 359,0 CISC · Weight & Dimensions

CISC, 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 840 x 359,0 (México) · Doble T 840 x 359,0 (Argentina / LATAM) · UB 868 (UK / Australia)

The W 840 x 359,0 steel profile weighs 359.5 kg/m (241.60 lb/ft), has a depth of 868 mm (34.17 in), flange width 403 mm (15.87 in). Cross-sectional area: 45,784.204 mm². Moment of inertia Ix = 590,617.366 cm⁴, Iy = 38,902.755 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	868 mm	34.17 in
Width (b)	403 mm	15.87 in
Web thickness (tw)	21.1 mm	0.83 in
Flange thickness (tf)	35.6 mm	1.40 in
Fillet radius (r)	18 mm	0.71 in
Weight	359.5 kg/m	241.60 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	45,784.2 mm²	70.966 in²
Moment of inertia (Ix)	590,617.37 cm⁴	14189.58 in⁴
Moment of inertia (Iy)	38,902.75 cm⁴	934.64 in⁴
Elastic section modulus (Sx)	13,608.7 cm³	830.457 in³
Elastic section modulus (Sy)	1,930.66 cm³	117.816 in³
Plastic section modulus (Zx)	15,401.01 cm³	939.831 in³
Plastic section modulus (Zy)	2,983.62 cm³	182.072 in³
Radius of gyration (rx)	35.92 cm	14.140 in
Radius of gyration (ry)	9.22 cm	3.629 in