RHS 340x180x8 SAISC · Weight & Dimensions

SAISC, 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 340x180 (México) · Caño estructural 340x180 (Argentina)

The RHS 340x180x8 steel profile weighs 61.6 kg/m (41.38 lb/ft), has a depth of 340 mm (13.39 in), flange width 180 mm (7.09 in). Cross-sectional area: 7,844.248 mm². Moment of inertia Ix = 11,845.114 cm⁴, Iy = 4,440.603 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	340 mm	13.39 in
Width (b)	180 mm	7.09 in
Thickness (t)	8 mm	0.31 in
Fillet radius (r)	20 mm	0.79 in
Weight	61.6 kg/m	41.38 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	7,844.25 mm²	12.159 in²
Moment of inertia (Ix)	11,845.11 cm⁴	284.58 in⁴
Moment of inertia (Iy)	4,440.6 cm⁴	106.69 in⁴
Elastic section modulus (Sx)	696.77 cm³	42.520 in³
Elastic section modulus (Sy)	493.4 cm³	30.109 in³
Plastic section modulus (Zx)	860.84 cm³	52.532 in³
Plastic section modulus (Zy)	555.86 cm³	33.921 in³
Radius of gyration (rx)	12.29 cm	4.838 in
Radius of gyration (ry)	7.52 cm	2.962 in