W 346 x 108,3 CISC · Weight & Dimensions

CISC, hot-rolled 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: IPR 346 x 108,3 (México) · Doble T 346 x 108,3 (Argentina / LATAM) · UB 346 (UK / Australia)

The W 346 x 108,3 steel profile weighs 108.3 kg/m (72.80 lb/ft), has a depth of 346 mm (13.62 in), flange width 370 mm (14.57 in). Cross-sectional area: 13,766.262 mm². Moment of inertia Ix = 30,286.691 cm⁴, Iy = 10,813.562 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	346 mm	13.62 in
Width (b)	370 mm	14.57 in
Web thickness (tw)	12.8 mm	0.50 in
Flange thickness (tf)	12.8 mm	0.50 in
Fillet radius (r)	15 mm	0.59 in
Weight	108.3 kg/m	72.80 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	13,766.26 mm²	21.338 in²
Moment of inertia (Ix)	30,286.69 cm⁴	727.64 in⁴
Moment of inertia (Iy)	10,813.56 cm⁴	259.80 in⁴
Elastic section modulus (Sx)	1,750.68 cm³	106.833 in³
Elastic section modulus (Sy)	584.52 cm³	35.670 in³
Plastic section modulus (Zx)	1,936.83 cm³	118.193 in³
Plastic section modulus (Zy)	891.17 cm³	54.383 in³
Radius of gyration (rx)	14.83 cm	5.840 in
Radius of gyration (ry)	8.86 cm	3.489 in