I 400x400x30x60 CISC · Weight & Dimensions

CISC, 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.

Also known as: I 400x400x30x60 (México) · Doble T I 400x400x30x60 (Argentina / LATAM) · UB 400 (UK / Australia)

The I 400x400x30x60 steel profile weighs 442.7 kg/m (297.52 lb/ft), has a depth of 400 mm (15.75 in), flange width 400 mm (15.75 in). Cross-sectional area: 56,400 mm². Moment of inertia Ix = 145,648 cm⁴, Iy = 64,063 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)	30 mm	1.18 in
Flange thickness (tf)	60 mm	2.36 in
Weight	442.7 kg/m	297.52 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	56,400 mm²	87.420 in²
Moment of inertia (Ix)	145,648 cm⁴	3499.19 in⁴
Moment of inertia (Iy)	64,063 cm⁴	1539.11 in⁴
Elastic section modulus (Sx)	7,282.4 cm³	444.401 in³
Elastic section modulus (Sy)	3,203.15 cm³	195.469 in³
Plastic section modulus (Zx)	8,748 cm³	533.838 in³
Plastic section modulus (Zy)	4,863 cm³	296.760 in³
Radius of gyration (rx)	16.07 cm	6.327 in
Radius of gyration (ry)	10.66 cm	4.196 in