Barra 20mm · Weight & Dimensions

BR — Round Bar

Round bars are solid circular sections used for bracing rods, ties, anchor bolts, and secondary structural elements.

The Barra 20mm steel profile weighs 2.5 kg/m (1.66 lb/ft). Cross-sectional area: 314.2 mm². Moment of inertia Ix = 0.79 cm⁴, Iy = 0.79 cm⁴.

Cross-section (not to scale)

Imperial equivalent: Ø20 mm = 3/4" (fractional inch diameter)

Dimensions

Property	Metric	Imperial
Diameter (d)	20 mm	0.79 in
Weight	2.5 kg/m	1.66 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	314.2 mm²	0.487 in²
Moment of inertia (Ix)	0.79 cm⁴	0.02 in⁴
Moment of inertia (Iy)	0.79 cm⁴	0.02 in⁴
Elastic section modulus (Sx)	0.79 cm³	0.048 in³
Elastic section modulus (Sy)	0.79 cm³	0.048 in³
Plastic section modulus (Zx)	1.33 cm³	0.081 in³
Plastic section modulus (Zy)	1.33 cm³	0.081 in³
Radius of gyration (rx)	0.5 cm	0.197 in
Radius of gyration (ry)	0.5 cm	0.197 in