Rectangular and square HSS

HSS 305x305x16

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 = 304.8d = 304.8t = 15.88t = 15.88
Cross-section, to scaledimensions in mm

Dimensions

Depthd
304.8mm
Widthb
304.8mm
Thicknesst
15.88mm
Outside corner radiusro
31.75mm

Mass and area

Mass per lengthm
139kg/m
Cross-sectional areaA
17,703mm²
Outside perimeterP
1,165mm

Strong axis x–x

Moment of inertiaIx
241.610⁶ mm⁴
Elastic section modulusSx
1,58510³ mm³
Plastic section modulusZx
1,89310³ mm³
Radius of gyrationrx
116.8mm

Weak axis y–y

Moment of inertiaIy
241.610⁶ mm⁴
Elastic section modulusSy
1,58510³ mm³
Plastic section modulusZy
1,89310³ mm³
Radius of gyrationry
116.8mm

Torsion and stability

Torsional constantJ
393,90310³ mm⁴

Equivalents in other standards