Double angles (2L)

2L8X4X1/2SLBB 2L203X102X12.7SLBB

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 = 16.38d = 4t = 0.5t = 0.5
Cross-section, to scaledimensions in inches

Dimensions

Depthd
4in
Widthb
8in
Thicknesst
0.5in

Mass and area

Mass per lengthm
39.2lb/ft
Cross-sectional areaA
11.6in²

Strong axis x–x

Moment of inertiaIx
13.5in⁴
Elastic section modulusSx
4.29in³
Plastic section modulusZx
7.81in³
Radius of gyrationrx
1.08in

Weak axis y–y

Moment of inertiaIy
170in⁴
Elastic section modulusSy
21.2in³
Plastic section modulusZy
32.9in³
Radius of gyrationry
3.83in

Torsion and stability

Polar radius (shear center)r̄o
4.03in
Flexural constantH
0.978

Centers

Centroidȳ
0.854in
Plastic neutral axisyp
0.363in

Slenderness ratios

Wall slendernessb/t
16

Equivalents in other standards