W 148 x 21,1 KS · Weight & Dimensions

KS, 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 148 x 21,1 (México) · Doble T 148 x 21,1 (Argentina / LATAM) · UB 148 (UK / Australia)

The W 148 x 21,1 steel profile weighs 21.1 kg/m (14.16 lb/ft), has a depth of 148 mm (5.83 in), flange width 100 mm (3.94 in). Cross-sectional area: 2,683.867 mm². Moment of inertia Ix = 1,021.183 cm⁴, Iy = 150.587 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	148 mm	5.83 in
Width (b)	100 mm	3.94 in
Web thickness (tw)	6 mm	0.24 in
Flange thickness (tf)	9 mm	0.35 in
Fillet radius (r)	11 mm	0.43 in
Weight	21.1 kg/m	14.16 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	2,683.87 mm²	4.160 in²
Moment of inertia (Ix)	1,021.18 cm⁴	24.53 in⁴
Moment of inertia (Iy)	150.59 cm⁴	3.62 in⁴
Elastic section modulus (Sx)	138 cm³	8.421 in³
Elastic section modulus (Sy)	30.12 cm³	1.838 in³
Plastic section modulus (Zx)	156.95 cm³	9.577 in³
Plastic section modulus (Zy)	46.74 cm³	2.852 in³
Radius of gyration (rx)	6.17 cm	2.428 in
Radius of gyration (ry)	2.37 cm	0.933 in