Angles (L)

L4X3X5/16 L102X76X7.9

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.
xyb = 4d = 3t = 0.313t = 0.313
Cross-section, to scaledimensions in inches

Dimensions

Depthd
3in
Widthb
4in
Thicknesst
0.313in
Distance k (design)kdes
0.688in
Distance k (detailing)kdet
0.6875in

Mass and area

Mass per lengthm
7.2lb/ft
Cross-sectional areaA
2.09in²

Strong axis x–x

Moment of inertiaIx
3.36in⁴
Elastic section modulusSx
1.22in³
Plastic section modulusZx
2.19in³
Radius of gyrationrx
1.27in

Weak axis y–y

Moment of inertiaIy
1.62in⁴
Elastic section modulusSy
0.721in³
Plastic section modulusZy
1.28in³
Radius of gyrationry
0.88in

Principal axes

Moment of inertia, minor principal axisIz
0.849in⁴
Section modulus, minor principal axisSz
0.59in³
Radius of gyration, minor principal axisrz
0.638in
Tangent of principal axis angletan α
0.554

Torsion and stability

Torsional constantJ
0.0731in⁴
Warping constantCw
0.0676in⁶
Polar radius (shear center)r̄o
1.98in

Centers

Centroidx̄
0.75in
Centroidȳ
1.25in
Plastic neutral axisxp
0.261in
Plastic neutral axisyp
0.656in

Slenderness ratios

Wall slendernessb/t
12.8

Equivalents in other standards