HP 310 x 125,0 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: HP 310 x 125,0 (México) · Doble T HP 310 x 125,0 (Argentina / LATAM) · UB 312 (UK / Australia)

The HP 310 x 125,0 steel profile weighs 125.0 kg/m (84.00 lb/ft), has a depth of 312 mm (12.28 in), flange width 312 mm (12.28 in). Cross-sectional area: 15,900.632 mm². Moment of inertia Ix = 27,074.795 cm⁴, Iy = 8,823.363 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	312 mm	12.28 in
Width (b)	312 mm	12.28 in
Web thickness (tw)	17.4 mm	0.69 in
Flange thickness (tf)	17.4 mm	0.69 in
Fillet radius (r)	16 mm	0.63 in
Weight	125.0 kg/m	84.00 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	15,900.63 mm²	24.646 in²
Moment of inertia (Ix)	27,074.8 cm⁴	650.47 in⁴
Moment of inertia (Iy)	8,823.36 cm⁴	211.98 in⁴
Elastic section modulus (Sx)	1,735.56 cm³	105.911 in³
Elastic section modulus (Sy)	565.6 cm³	34.515 in³
Plastic section modulus (Zx)	1,963.25 cm³	119.805 in³
Plastic section modulus (Zy)	870.57 cm³	53.126 in³
Radius of gyration (rx)	13.05 cm	5.137 in
Radius of gyration (ry)	7.45 cm	2.933 in