Double angles (2L)

2L4X3-1/2X5/16LLBB 2L102X89X7.9LLBB

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 = 7.394d = 4t = 0.313t = 0.313
Cross-section, to scaledimensions in inches

Dimensions

Depthd
4in
Widthb
3.5in
Thicknesst
0.313in

Mass and area

Mass per lengthm
15.4lb/ft
Cross-sectional areaA
4.5in²

Strong axis x–x

Moment of inertiaIx
7.06in⁴
Elastic section modulusSx
2.5in³
Plastic section modulusZx
4.48in³
Radius of gyrationrx
1.25in

Weak axis y–y

Moment of inertiaIy
8.82in⁴
Elastic section modulusSy
2.52in³
Plastic section modulusZy
4.15in³
Radius of gyrationry
1.4in

Torsion and stability

Polar radius (shear center)r̄o
2.14in
Flexural constantH
0.775

Centers

Centroidȳ
1.17in
Plastic neutral axisyp
0.4in

Slenderness ratios

Wall slendernessb/t
12.8

Equivalents in other standards