Angles (L)

L4X3X1/4 L102X76X6.4

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 = 0.25t = 0.25
Cross-section, to scaledimensions in inches

Dimensions

Depthd
3in
Widthb
4in
Thicknesst
0.25in
Distance k (design)kdes
0.625in
Distance k (detailing)kdet
0.625in

Mass and area

Mass per lengthm
5.8lb/ft
Cross-sectional areaA
1.69in²

Strong axis x–x

Moment of inertiaIx
2.75in⁴
Elastic section modulusSx
0.988in³
Plastic section modulusZx
1.77in³
Radius of gyrationrx
1.27in

Weak axis y–y

Moment of inertiaIy
1.33in⁴
Elastic section modulusSy
0.585in³
Plastic section modulusZy
1.03in³
Radius of gyrationry
0.887in

Principal axes

Moment of inertia, minor principal axisIz
0.692in⁴
Section modulus, minor principal axisSz
0.474in³
Radius of gyration, minor principal axisrz
0.639in
Tangent of principal axis angletan α
0.558

Torsion and stability

Torsional constantJ
0.0386in⁴
Warping constantCw
0.0356in⁶
Polar radius (shear center)r̄o
1.99in

Centers

Centroidx̄
0.725in
Centroidȳ
1.22in
Plastic neutral axisxp
0.211in
Plastic neutral axisyp
0.62in

Slenderness ratios

Wall slendernessb/t
16

Equivalents in other standards