I 400x400x12.5x22.2 IAS · Weight & Dimensions

IAS, welded 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.

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Also known as: I 400x400x12.5x22.2 (México) · Doble T I 400x400x12.5x22.2 (Argentina / LATAM) · UB 400 (UK / Australia)

The I 400x400x12.5x22.2 steel profile weighs 174.3 kg/m (117.14 lb/ft), has a depth of 400 mm (15.75 in), flange width 400 mm (15.75 in). Cross-sectional area: 22,205 mm². Moment of inertia Ix = 68,130.29 cm⁴, Iy = 23,685.788 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	400 mm	15.75 in
Width (b)	400 mm	15.75 in
Web thickness (tw)	12.5 mm	0.49 in
Flange thickness (tf)	22.2 mm	0.87 in
Weight	174.3 kg/m	117.14 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	22,205 mm²	34.418 in²
Moment of inertia (Ix)	68,130.29 cm⁴	1636.83 in⁴
Moment of inertia (Iy)	23,685.79 cm⁴	569.05 in⁴
Elastic section modulus (Sx)	3,406.51 cm³	207.879 in³
Elastic section modulus (Sy)	1,184.29 cm³	72.270 in³
Plastic section modulus (Zx)	3,750.02 cm³	228.841 in³
Plastic section modulus (Zy)	1,789.89 cm³	109.226 in³
Radius of gyration (rx)	17.52 cm	6.896 in
Radius of gyration (ry)	10.33 cm	4.066 in