Angles (L)

L12X12X1-3/8 L305X305X34.9

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 = 12d = 12t = 1.38t = 1.38
Cross-section, to scaledimensions in inches

Dimensions

Depthd
12in
Widthb
12in
Thicknesst
1.38in
Distance k (design)kdes
2.09in
Distance k (detailing)kdet
2.063in

Mass and area

Mass per lengthm
105lb/ft
Cross-sectional areaA
31.1in²

Strong axis x–x

Moment of inertiaIx
413in⁴
Elastic section modulusSx
48.6in³
Plastic section modulusZx
88.1in³
Radius of gyrationrx
3.64in

Weak axis y–y

Moment of inertiaIy
413in⁴
Elastic section modulusSy
48.6in³
Plastic section modulusZy
88.1in³
Radius of gyrationry
3.64in

Principal axes

Moment of inertia, minor principal axisIz
165in⁴
Section modulus, minor principal axisSz
33.3in³
Radius of gyration, minor principal axisrz
2.3in
Tangent of principal axis angletan α
1

Torsion and stability

Torsional constantJ
19.9in⁴
Warping constantCw
211in⁶
Polar radius (shear center)r̄o
6.51in
Flexural constantH
0.627

Centers

Centroidx̄
3.5in
Centroidȳ
3.5in
Plastic neutral axisxp
1.3in
Plastic neutral axisyp
1.3in

Slenderness ratios

Wall slendernessb/t
8.7

Equivalents in other standards