W 310 x 38,7 Gerdau · Weight & Dimensions

Gerdau · 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 310 x 38,7 (México) · Doble T 310 x 38,7 (Argentina / LATAM) · UB 310 (UK / Australia)

The W 310 x 38,7 steel profile weighs 38.7 kg/m (26.01 lb/ft), has a depth of 310 mm (12.20 in), flange width 165 mm (6.50 in). Cross-sectional area: 4,972.321 mm². Moment of inertia Ix = 8,581.034 cm⁴, Iy = 726.956 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	310 mm	12.20 in
Width (b)	165 mm	6.50 in
Web thickness (tw)	5.8 mm	0.23 in
Flange thickness (tf)	9.7 mm	0.38 in
Fillet radius (r)	10 mm	0.39 in
Weight	38.7 kg/m	26.01 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	4,972.32 mm²	7.707 in²
Moment of inertia (Ix)	8,581.03 cm⁴	206.16 in⁴
Moment of inertia (Iy)	726.96 cm⁴	17.47 in⁴
Elastic section modulus (Sx)	553.62 cm³	33.784 in³
Elastic section modulus (Sy)	88.12 cm³	5.377 in³
Plastic section modulus (Zx)	615.36 cm³	37.552 in³
Plastic section modulus (Zy)	134.93 cm³	8.234 in³
Radius of gyration (rx)	13.14 cm	5.172 in
Radius of gyration (ry)	3.82 cm	1.505 in