Angles (L)

L4X3X1/2 L102X76X12.7

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 = 0.5t = 0.5
Cross-section, to scaledimensions in inches

Dimensions

Depthd
3in
Widthb
4in
Thicknesst
0.5in
Distance k (design)kdes
0.875in
Distance k (detailing)kdet
0.875in

Mass and area

Mass per lengthm
11.1lb/ft
Cross-sectional areaA
3.25in²

Strong axis x–x

Moment of inertiaIx
5.02in⁴
Elastic section modulusSx
1.87in³
Plastic section modulusZx
3.36in³
Radius of gyrationrx
1.24in

Weak axis y–y

Moment of inertiaIy
2.4in⁴
Elastic section modulusSy
1.1in³
Plastic section modulusZy
1.99in³
Radius of gyrationry
0.858in

Principal axes

Moment of inertia, minor principal axisIz
1.3in⁴
Section modulus, minor principal axisSz
0.929in³
Radius of gyration, minor principal axisrz
0.633in
Tangent of principal axis angletan α
0.542

Torsion and stability

Torsional constantJ
0.281in⁴
Warping constantCw
0.255in⁶
Polar radius (shear center)r̄o
1.94in

Centers

Centroidx̄
0.822in
Centroidȳ
1.32in
Plastic neutral axisxp
0.406in
Plastic neutral axisyp
0.75in

Slenderness ratios

Wall slendernessb/t
8

Equivalents in other standards