W 840 x 329,0 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 329,0 (México) · Doble T 840 x 329,0 (Argentina / LATAM) · UB 862 (UK / Australia)

The W 840 x 329,0 steel profile weighs 329.7 kg/m (221.56 lb/ft), has a depth of 862 mm (33.94 in), flange width 401 mm (15.79 in). Cross-sectional area: 41,967.764 mm². Moment of inertia Ix = 534,823.657 cm⁴, Iy = 34,876.307 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	862 mm	33.94 in
Width (b)	401 mm	15.79 in
Web thickness (tw)	19.7 mm	0.78 in
Flange thickness (tf)	32.4 mm	1.28 in
Fillet radius (r)	18 mm	0.71 in
Weight	329.7 kg/m	221.56 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	41,967.76 mm²	65.050 in²
Moment of inertia (Ix)	534,823.66 cm⁴	12849.14 in⁴
Moment of inertia (Iy)	34,876.31 cm⁴	837.90 in⁴
Elastic section modulus (Sx)	12,408.9 cm³	757.241 in³
Elastic section modulus (Sy)	1,739.47 cm³	106.149 in³
Plastic section modulus (Zx)	14,018.21 cm³	855.447 in³
Plastic section modulus (Zy)	2,686.18 cm³	163.921 in³
Radius of gyration (rx)	35.7 cm	14.054 in
Radius of gyration (ry)	9.12 cm	3.589 in