W 313 x 32,8 SAISC · Weight & Dimensions

SAISC, 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 313 x 32,8 (México) · Doble T 313 x 32,8 (Argentina / LATAM) · UB 312.7 (UK / Australia)

The W 313 x 32,8 steel profile weighs 32.8 kg/m (22.05 lb/ft), has a depth of 312.7 mm (12.31 in), flange width 102.4 mm (4.03 in). Cross-sectional area: 4,182.682 mm². Moment of inertia Ix = 6,501.356 cm⁴, Iy = 194.105 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	312.7 mm	12.31 in
Width (b)	102.4 mm	4.03 in
Web thickness (tw)	6.6 mm	0.26 in
Flange thickness (tf)	10.8 mm	0.43 in
Fillet radius (r)	7.6 mm	0.30 in
Weight	32.8 kg/m	22.05 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	4,182.68 mm²	6.483 in²
Moment of inertia (Ix)	6,501.36 cm⁴	156.20 in⁴
Moment of inertia (Iy)	194.1 cm⁴	4.66 in⁴
Elastic section modulus (Sx)	415.82 cm³	25.375 in³
Elastic section modulus (Sy)	37.91 cm³	2.313 in³
Plastic section modulus (Zx)	480.83 cm³	29.342 in³
Plastic section modulus (Zy)	60.04 cm³	3.664 in³
Radius of gyration (rx)	12.47 cm	4.908 in
Radius of gyration (ry)	2.15 cm	0.848 in