I 679x253x12.5x15.5 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 679x253x12.5x15.5 (México) · Doble T I 679x253x12.5x15.5 (Argentina / LATAM) · UB 679 (UK / Australia)

The I 679x253x12.5x15.5 steel profile weighs 125.2 kg/m (84.10 lb/ft), has a depth of 679 mm (26.73 in), flange width 253 mm (9.96 in). Cross-sectional area: 15,943 mm². Moment of inertia Ix = 114,677.761 cm⁴, Iy = 4,194.068 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	679 mm	26.73 in
Width (b)	253 mm	9.96 in
Web thickness (tw)	12.5 mm	0.49 in
Flange thickness (tf)	15.5 mm	0.61 in
Weight	125.2 kg/m	84.10 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	15,943 mm²	24.712 in²
Moment of inertia (Ix)	114,677.76 cm⁴	2755.13 in⁴
Moment of inertia (Iy)	4,194.07 cm⁴	100.76 in⁴
Elastic section modulus (Sx)	3,377.84 cm³	206.129 in³
Elastic section modulus (Sy)	331.55 cm³	20.232 in³
Plastic section modulus (Zx)	3,914.12 cm³	238.855 in³
Plastic section modulus (Zy)	521.38 cm³	31.817 in³
Radius of gyration (rx)	26.82 cm	10.559 in
Radius of gyration (ry)	5.13 cm	2.019 in