L – angles

L178x102x15.9

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 = 178d = 102t = 15.9t = 15.9
Cross-section, to scaledimensions in mm

Dimensions

Depthd
102mm
Widthb
178mm
Thicknesst
15.9mm
Distance k (design)kdes
28.7mm
Distance k (detailing)kdet
28.6mm

Mass and area

Mass per lengthm
32.7kg/m
Cross-sectional areaA
4,190mm²

Strong axis x–x

Moment of inertiaIx
13.510⁶ mm⁴
Elastic section modulusSx
11710³ mm³
Plastic section modulusZx
20510³ mm³
Radius of gyrationrx
56.6mm

Weak axis y–y

Moment of inertiaIy
3.2410⁶ mm⁴
Elastic section modulusSy
4210³ mm³
Plastic section modulusZy
76.910³ mm³
Radius of gyrationry
27.9mm

Principal axes

Moment of inertia, minor principal axisIz
210⁶ mm⁴
Section modulus, minor principal axisSz
35.410³ mm³
Radius of gyration, minor principal axisrz
21.8mm
Tangent of principal axis angletan α
0.329

Torsion and stability

Torsional constantJ
36110³ mm⁴
Warping constantCw
0.63610⁹ mm⁶
Polar radius (shear center)r̄o
84.8mm

Centers

Centroidx̄
24.3mm
Centroidȳ
62.2mm
Plastic neutral axisxp
11.8mm
Plastic neutral axisyp
45.7mm

Slenderness ratios

Wall slendernessb/t
11.2

Equivalents in other standards