W 360 x 990,0 CISC · Weight & Dimensions

CISC, 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 360 x 990,0 (México) · Doble T 360 x 990,0 (Argentina / LATAM) · UB 550 (UK / Australia)

The W 360 x 990,0 steel profile weighs 989.1 kg/m (664.68 lb/ft), has a depth of 550 mm (21.65 in), flange width 448 mm (17.64 in). Cross-sectional area: 126,241.142 mm². Moment of inertia Ix = 518,907.064 cm⁴, Iy = 173,359.005 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	550 mm	21.65 in
Width (b)	448 mm	17.64 in
Web thickness (tw)	71.9 mm	2.83 in
Flange thickness (tf)	115 mm	4.53 in
Fillet radius (r)	15 mm	0.59 in
Weight	989.1 kg/m	664.68 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	126,241.14 mm²	195.674 in²
Moment of inertia (Ix)	518,907.06 cm⁴	12466.74 in⁴
Moment of inertia (Iy)	173,359.01 cm⁴	4164.95 in⁴
Elastic section modulus (Sx)	18,869.35 cm³	1151.483 in³
Elastic section modulus (Sy)	7,739.24 cm³	472.279 in³
Plastic section modulus (Zx)	24,282.1 cm³	1481.791 in³
Plastic section modulus (Zy)	11,961.64 cm³	729.947 in³
Radius of gyration (rx)	20.27 cm	7.982 in
Radius of gyration (ry)	11.72 cm	4.614 in