RHS 310x230x8.8 Açotubo · Weight & Dimensions

Açotubo, 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 310x230 (México) · Caño estructural 310x230 (Argentina)

The RHS 310x230x8.8 steel profile weighs 70.6 kg/m (47.45 lb/ft), has a depth of 310 mm (12.20 in), flange width 230 mm (9.06 in). Cross-sectional area: 8,994.815 mm². Moment of inertia Ix = 12,381.411 cm⁴, Iy = 7,826.811 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	310 mm	12.20 in
Width (b)	230 mm	9.06 in
Thickness (t)	8.8 mm	0.35 in
Fillet radius (r)	17.6 mm	0.69 in
Weight	70.6 kg/m	47.45 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	8,994.81 mm²	13.942 in²
Moment of inertia (Ix)	12,381.41 cm⁴	297.46 in⁴
Moment of inertia (Iy)	7,826.81 cm⁴	188.04 in⁴
Elastic section modulus (Sx)	798.8 cm³	48.746 in³
Elastic section modulus (Sy)	680.59 cm³	41.532 in³
Plastic section modulus (Zx)	955.24 cm³	58.292 in³
Plastic section modulus (Zy)	779.33 cm³	47.558 in³
Radius of gyration (rx)	11.73 cm	4.619 in
Radius of gyration (ry)	9.33 cm	3.672 in