L – angles

L305x305x31.8

Standard: ASTM A6/A6M (désignations métriques)Source: SI values from the AISC v16.0 database (ASTM A6 shapes common to Canada)
ASTM A6 rolled shapes are the same in Canada; the CISC list may differ slightly (availability).
xyb = 305d = 305t = 31.8t = 31.8
Cross-section, to scaledimensions in mm

Dimensions

Depthd
305mm
Widthb
305mm
Thicknesst
31.8mm
Distance k (design)kdes
49.8mm
Distance k (detailing)kdet
49.2mm

Mass and area

Mass per lengthm
143kg/m
Cross-sectional areaA
18,300mm²

Strong axis x–x

Moment of inertiaIx
15910⁶ mm⁴
Elastic section modulusSx
73110³ mm³
Plastic section modulusZx
1,32010³ mm³
Radius of gyrationrx
93mm

Weak axis y–y

Moment of inertiaIy
15910⁶ mm⁴
Elastic section modulusSy
73110³ mm³
Plastic section modulusZy
1,32010³ mm³
Radius of gyrationry
93mm

Principal axes

Moment of inertia, minor principal axisIz
63.310⁶ mm⁴
Section modulus, minor principal axisSz
51010³ mm³
Radius of gyration, minor principal axisrz
58.7mm
Tangent of principal axis angletan α
1

Torsion and stability

Torsional constantJ
6,20010³ mm⁴
Warping constantCw
4310⁹ mm⁶
Polar radius (shear center)r̄o
166mm
Flexural constantH
0.627

Centers

Centroidx̄
87.6mm
Centroidȳ
87.6mm
Plastic neutral axisxp
30mm
Plastic neutral axisyp
30mm

Slenderness ratios

Wall slendernessb/t
9.6

Equivalents in other standards