I 700x300x11x20 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 700x300x11x20 (México) · Doble T I 700x300x11x20 (Argentina / LATAM) · UB 700 (UK / Australia)

The I 700x300x11x20 steel profile weighs 151.2 kg/m (101.60 lb/ft), has a depth of 700 mm (27.56 in), flange width 300 mm (11.81 in). Cross-sectional area: 19,260 mm². Moment of inertia Ix = 165,113.8 cm⁴, Iy = 9,007.321 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	700 mm	27.56 in
Width (b)	300 mm	11.81 in
Web thickness (tw)	11 mm	0.43 in
Flange thickness (tf)	20 mm	0.79 in
Weight	151.2 kg/m	101.60 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	19,260 mm²	29.853 in²
Moment of inertia (Ix)	165,113.8 cm⁴	3966.86 in⁴
Moment of inertia (Iy)	9,007.32 cm⁴	216.40 in⁴
Elastic section modulus (Sx)	4,717.54 cm³	287.883 in³
Elastic section modulus (Sy)	600.49 cm³	36.644 in³
Plastic section modulus (Zx)	5,277.9 cm³	322.079 in³
Plastic section modulus (Zy)	919.97 cm³	56.140 in³
Radius of gyration (rx)	29.28 cm	11.527 in
Radius of gyration (ry)	6.84 cm	2.692 in