RHS 88.9x63.5x7.95 CISC · Weight & Dimensions

CISC, cold-formed sections · Rectangular Hollow Section

Rectangular Hollow Sections (RHS) are tubular profiles with excellent torsional resistance and aesthetic appeal. Used for columns, trusses, and exposed structural elements.

Also known as: PTR 88.9x63.5 (México) · Caño estructural 88.9x63.5 (Argentina)

The RHS 88.9x63.5x7.95 steel profile weighs 15.8 kg/m (10.59 lb/ft), has a depth of 88.9 mm (3.50 in), flange width 63.5 mm (2.50 in). Cross-sectional area: 2,007.59 mm². Moment of inertia Ix = 187.541 cm⁴, Iy = 109.275 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	88.9 mm	3.50 in
Width (b)	63.5 mm	2.50 in
Thickness (t)	8.0 mm	0.31 in
Fillet radius (r)	15.9 mm	0.63 in
Weight	15.8 kg/m	10.59 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	2,007.59 mm²	3.112 in²
Moment of inertia (Ix)	187.54 cm⁴	4.51 in⁴
Moment of inertia (Iy)	109.27 cm⁴	2.63 in⁴
Elastic section modulus (Sx)	42.19 cm³	2.575 in³
Elastic section modulus (Sy)	34.42 cm³	2.100 in³
Plastic section modulus (Zx)	55.06 cm³	3.360 in³
Plastic section modulus (Zy)	43.34 cm³	2.645 in³
Radius of gyration (rx)	3.06 cm	1.203 in
Radius of gyration (ry)	2.33 cm	0.919 in