Double angles (2L)

2L7X4X3/4X3/8LLBB 2L178X102X19X9LLBB

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 = 8.425d = 7t = 0.75t = 0.75
Cross-section, to scaledimensions in inches

Dimensions

Depthd
7in
Widthb
4in
Thicknesst
0.75in

Mass and area

Mass per lengthm
52.4lb/ft
Cross-sectional areaA
15.5in²

Strong axis x–x

Moment of inertiaIx
75.6in⁴
Elastic section modulusSx
16.8in³
Plastic section modulusZx
29.6in³
Radius of gyrationrx
2.21in

Weak axis y–y

Moment of inertiaIy
40.2in⁴
Elastic section modulusSy
9.6in³
Plastic section modulusZy
18.4in³
Radius of gyrationry
1.61in

Torsion and stability

Polar radius (shear center)r̄o
3.47in
Flexural constantH
0.624

Centers

Centroidȳ
2.5in
Plastic neutral axisyp
1.84in

Slenderness ratios

Wall slendernessb/t
9.33

Equivalents in other standards