PFC – parallel-flange channels

260x75x28

Standard: BS 4-1:2005Source: Primary geometry (h, b, tw, tf, r) — calculated properties (exact engine)
xybf = 75d = 260tf = 12tf = 12tw = 7tw = 7
Cross-section, to scaledimensions in mm

Dimensions

Depthd
260mm
Flange widthbf
75mm
Web thicknesstw
7mm
Flange thicknesstf
12mm
Root radiusr
12mm

Mass and area

Mass per lengthm
27.58kg/m
Cross-sectional areaA
3,514mm²
Outside perimeterP
795.7mm

Strong axis x–x

Moment of inertiaIx
36.1910⁶ mm⁴
Elastic section modulusSx
278.410³ mm³
Plastic section modulusZx
327.810³ mm³
Radius of gyrationrx
101.5mm

Weak axis y–y

Moment of inertiaIy
1.85510⁶ mm⁴
Elastic section modulusSy
34.3610³ mm³
Plastic section modulusZy
62.0110³ mm³
Radius of gyrationry
22.97mm

Torsion and stability

Torsional constantJ
117.310³ mm⁴

Centers

Centroidx̄
21.03mm

Equivalents in other standards