RHS 310x210x8.2 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 310x210 (México) · Caño estructural 310x210 (Argentina)

The RHS 310x210x8.2 steel profile weighs 63.5 kg/m (42.65 lb/ft), has a depth of 310 mm (12.20 in), flange width 210 mm (8.27 in). Cross-sectional area: 8,085.882 mm². Moment of inertia Ix = 10,895.362 cm⁴, Iy = 5,985.23 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	310 mm	12.20 in
Width (b)	210 mm	8.27 in
Thickness (t)	8.2 mm	0.32 in
Fillet radius (r)	16.4 mm	0.65 in
Weight	63.5 kg/m	42.65 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	8,085.88 mm²	12.533 in²
Moment of inertia (Ix)	10,895.36 cm⁴	261.76 in⁴
Moment of inertia (Iy)	5,985.23 cm⁴	143.80 in⁴
Elastic section modulus (Sx)	702.93 cm³	42.895 in³
Elastic section modulus (Sy)	570.02 cm³	34.785 in³
Plastic section modulus (Zx)	846.55 cm³	51.660 in³
Plastic section modulus (Zy)	648.73 cm³	39.588 in³
Radius of gyration (rx)	11.61 cm	4.570 in
Radius of gyration (ry)	8.6 cm	3.387 in