Double angles (2L)

2L4X3X1/4LLBB 2L102X76X6.4LLBB

Standard: AISC Shapes Database v16.0Source: AISC (aisc.org) — Shapes Database v16.0 (Excel file)
Values published by AISC, in US customary (original) and SI units.
xy2b + s = 6.394d = 4t = 0.25t = 0.25
Cross-section, to scaledimensions in inches

Dimensions

Depthd
4in
Widthb
3in
Thicknesst
0.25in

Mass and area

Mass per lengthm
11.6lb/ft
Cross-sectional areaA
3.38in²

Strong axis x–x

Moment of inertiaIx
5.5in⁴
Elastic section modulusSx
1.98in³
Plastic section modulusZx
3.54in³
Radius of gyrationrx
1.27in

Weak axis y–y

Moment of inertiaIy
4.47in⁴
Elastic section modulusSy
1.49in³
Plastic section modulusZy
2.45in³
Radius of gyrationry
1.15in

Torsion and stability

Polar radius (shear center)r̄o
2.03in
Flexural constantH
0.71

Centers

Centroidȳ
1.22in
Plastic neutral axisyp
0.62in

Slenderness ratios

Wall slendernessb/t
16

Equivalents in other standards