W 311 x 117,8 Arval · Weight & Dimensions

Arval, 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 117,8 (México) · Doble T 311 x 117,8 (Argentina / LATAM) · UB 311 (UK / Australia)

The W 311 x 117,8 steel profile weighs 117.8 kg/m (79.13 lb/ft), has a depth of 311 mm (12.24 in), flange width 308 mm (12.13 in). Cross-sectional area: 14,945.779 mm². Moment of inertia Ix = 25,476.037 cm⁴, Iy = 7,814.943 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	311 mm	12.24 in
Width (b)	308 mm	12.13 in
Web thickness (tw)	16 mm	0.63 in
Flange thickness (tf)	16 mm	0.63 in
Fillet radius (r)	27 mm	1.06 in
Weight	117.8 kg/m	79.13 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	14,945.78 mm²	23.166 in²
Moment of inertia (Ix)	25,476.04 cm⁴	612.06 in⁴
Moment of inertia (Iy)	7,814.94 cm⁴	187.75 in⁴
Elastic section modulus (Sx)	1,638.33 cm³	99.977 in³
Elastic section modulus (Sy)	507.46 cm³	30.967 in³
Plastic section modulus (Zx)	1,848.65 cm³	112.812 in³
Plastic section modulus (Zy)	785.55 cm³	47.937 in³
Radius of gyration (rx)	13.06 cm	5.140 in
Radius of gyration (ry)	7.23 cm	2.847 in