Round HSS

HSS 274x16

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.
xyD = 274.3t = 15.88t = 15.88
Cross-section, to scaledimensions in mm

Dimensions

Outside diameterD
274.3mm
Thicknesst
15.88mm

Mass and area

Mass per lengthm
101.2kg/m
Cross-sectional areaA
12,892mm²
Outside perimeterP
861.7mm

Strong axis x–x

Moment of inertiaIx
10810⁶ mm⁴
Elastic section modulusSx
787.610³ mm³
Plastic section modulusZx
1,06210³ mm³
Radius of gyrationrx
91.54mm

Weak axis y–y

Moment of inertiaIy
10810⁶ mm⁴
Elastic section modulusSy
787.610³ mm³
Plastic section modulusZy
1,06210³ mm³
Radius of gyrationry
91.54mm

Torsion and stability

Torsional constantJ
216,05110³ mm⁴

Equivalents in other standards