Double angles (2L)

2L4X3X5/16LLBB 2L102X76X7.9LLBB

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 = 0.313t = 0.313
Cross-section, to scaledimensions in inches

Dimensions

Depthd
4in
Widthb
3in
Thicknesst
0.313in

Mass and area

Mass per lengthm
14.4lb/ft
Cross-sectional areaA
4.18in²

Strong axis x–x

Moment of inertiaIx
6.72in⁴
Elastic section modulusSx
2.44in³
Plastic section modulusZx
4.38in³
Radius of gyrationrx
1.27in

Weak axis y–y

Moment of inertiaIy
5.62in⁴
Elastic section modulusSy
1.87in³
Plastic section modulusZy
3.14in³
Radius of gyrationry
1.16in

Torsion and stability

Polar radius (shear center)r̄o
2.03in
Flexural constantH
0.712

Centers

Centroidȳ
1.25in
Plastic neutral axisyp
0.656in

Slenderness ratios

Wall slendernessb/t
12.8

Equivalents in other standards