W 311 x 53,5 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 311 x 53,5 (México) · Doble T 311 x 53,5 (Argentina / LATAM) · UB 310.9 (UK / Australia)

The W 311 x 53,5 steel profile weighs 53.5 kg/m (35.98 lb/ft), has a depth of 310.9 mm (12.24 in), flange width 166.8 mm (6.57 in). Cross-sectional area: 6,821.264 mm². Moment of inertia Ix = 11,694.218 cm⁴, Iy = 1,060.967 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	310.9 mm	12.24 in
Width (b)	166.8 mm	6.57 in
Web thickness (tw)	7.7 mm	0.30 in
Flange thickness (tf)	13.7 mm	0.54 in
Fillet radius (r)	8.9 mm	0.35 in
Weight	53.5 kg/m	35.98 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	6,821.26 mm²	10.573 in²
Moment of inertia (Ix)	11,694.22 cm⁴	280.95 in⁴
Moment of inertia (Iy)	1,060.97 cm⁴	25.49 in⁴
Elastic section modulus (Sx)	752.28 cm³	45.907 in³
Elastic section modulus (Sy)	127.21 cm³	7.763 in³
Plastic section modulus (Zx)	843.37 cm³	51.466 in³
Plastic section modulus (Zy)	195.18 cm³	11.911 in³
Radius of gyration (rx)	13.09 cm	5.155 in
Radius of gyration (ry)	3.94 cm	1.553 in