Double angles (2L)

2L7X4X3/4SLBB 2L178X102X19SLBB

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 = 14.41d = 4t = 0.75t = 0.75
Cross-section, to scaledimensions in inches

Dimensions

Depthd
4in
Widthb
7in
Thicknesst
0.75in

Mass and area

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

Strong axis x–x

Moment of inertiaIx
18in⁴
Elastic section modulusSx
6.01in³
Plastic section modulusZx
11.2in³
Radius of gyrationrx
1.08in

Weak axis y–y

Moment of inertiaIy
173in⁴
Elastic section modulusSy
24.7in³
Plastic section modulusZy
38.7in³
Radius of gyrationry
3.34in

Torsion and stability

Polar radius (shear center)r̄o
3.57in
Flexural constantH
0.969

Centers

Centroidȳ
1in
Plastic neutral axisyp
0.553in

Slenderness ratios

Wall slendernessb/t
9.33

Equivalents in other standards