I 1200x400x16x30 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 1200x400x16x30 (México) · Doble T I 1200x400x16x30 (Argentina / LATAM) · UB 1200 (UK / Australia)

The I 1200x400x16x30 steel profile weighs 331.6 kg/m (222.82 lb/ft), has a depth of 1200 mm (47.24 in), flange width 400 mm (15.75 in). Cross-sectional area: 42,240 mm². Moment of inertia Ix = 1,019,059.2 cm⁴, Iy = 32,038.912 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	1200 mm	47.24 in
Width (b)	400 mm	15.75 in
Web thickness (tw)	16 mm	0.63 in
Flange thickness (tf)	30 mm	1.18 in
Weight	331.6 kg/m	222.82 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	42,240 mm²	65.472 in²
Moment of inertia (Ix)	1,019,059.2 cm⁴	24482.90 in⁴
Moment of inertia (Iy)	32,038.91 cm⁴	769.73 in⁴
Elastic section modulus (Sx)	16,984.32 cm³	1036.451 in³
Elastic section modulus (Sy)	1,601.95 cm³	97.757 in³
Plastic section modulus (Zx)	19,238.4 cm³	1174.004 in³
Plastic section modulus (Zy)	2,472.96 cm³	150.910 in³
Radius of gyration (rx)	49.12 cm	19.338 in
Radius of gyration (ry)	8.71 cm	3.429 in