Rectangular and square HSS

HSS 559x356x16

Standard: CSA G40.20/G40.21Source: Calculated (exact engine)
Calculated: design thickness = nominal thickness (CSA G40.20, Class C), outside radius 2t. Range derived from ASTM A500 sizes — cross-check with the CISC tables.
xyb = 355.6d = 558.8t = 15.88t = 15.88
Cross-section, to scaledimensions in mm

Dimensions

Depthd
558.8mm
Widthb
355.6mm
Thicknesst
15.88mm
Outside corner radiusro
31.75mm

Mass and area

Mass per lengthm
215kg/m
Cross-sectional areaA
27,384mm²
Outside perimeterP
1,774mm

Strong axis x–x

Moment of inertiaIx
1,17010⁶ mm⁴
Elastic section modulusSx
4,18910³ mm³
Plastic section modulusZx
5,09210³ mm³
Radius of gyrationrx
206.7mm

Weak axis y–y

Moment of inertiaIy
582.510⁶ mm⁴
Elastic section modulusSy
3,27610³ mm³
Plastic section modulusZy
3,73410³ mm³
Radius of gyrationry
145.8mm

Torsion and stability

Torsional constantJ
1,248,80010³ mm⁴

Equivalents in other standards