# Canadian Steel Section Properties Legend

This data is derived from CISC SST9.2 from the 9th edition of the Canadian Steel Handbook. In accordance with the license for SST9.2, you are prohibited from disseminating this data.Symbol | Definition |
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A | Cross-sectional area, mm^2 |

Avl | Availability, "*" indicates a section not produced in Canada. "+" indicates availability should be checked with supplier. |

B | Width of flange or horizontal leg, mm |

B1 | Width of top flange, mm |

B2 | Width of bottom flange, mm |

BetX | Monosymmetry constant, positive when the larger flange is in flexural compression, and negative otherwise, mm. Used for calculating the lateral-torsional buckling moment of monosymmetric beams. (See "Buckling properties of monosymmetric I-beams", Kitipornchai and Trahair, Journal of the Structural Division, ASCE, May 1980) |

BT | Width-to-thickness ratio of flange, wall or horizontal leg. S16-01 Clause 11.3 |

BT1 | Width-to-thickness ratio of top flange. S16-01 Clause 11.3 |

BT2 | Width-to-thickness ratio of bottom flange. S16-01 Clause 11.3 |

C | Torsion modulus, ratio of applied torque to maximum shear stress at outer face, mm^3 |

Crt | Shear constant, ratio of vertical shear force to maximum shear stress for the strong bending axis, mm^2 |

Cw | Warping constant, mm^6 |

D | Depth of section or height of vertical leg, mm |

Dn_i | Nominal depth of section (Imperial units), in |

Dnom | Nominal depth of section, mm |

Dsg | Section designation |

Ds_i | Section designation (Imperial units) |

DT | Depth-to-thickness ratio of wall or vertical leg. See S16-01 Clause 11.3 |

Grp | G40.20 shape size grouping for tensile properties. See G40.20-04 Standard |

HW | Clear depth-to-thickness ratio of web. See S16-01 Clause 11.3 |

Ix | Moment of inertia about axis XX, mm^4 |

Ixy | Product of inertia, mm^4 |

Iy | Moment of inertia about axis YY, mm^4 |

J | St-Venant torsional constant, mm^4 |

K | Distance between outer face of flange and web-toe of fillet, mm |

K1 | Distance between middle line of web and flange-toe of fillet, mm |

Mass | Mass per length, kg/m |

Omeg | Buckling constant of asymmetric sections. See S16-01 Clause 13.3.2 |

Prp | Property group, "*" indicates the first section in a group with similar properties |

Qf | Statical moment at point in flange in line with web face, mm^3 |

Qw | Statical moment at mid-depth in web, mm^3 |

RI | Inner corner radius, mm |

Rmax | Maximum flange-to-web fillet radius (detailing value), mm |

Rmin | Minimum flange-to-web fillet radius (design value), mm |

RO | Outer corner radius, mm |

Rop | Polar radius of gyration about shear centre, mm. See S16-01 Clause 13.3.2 |

Rx | Radius of gyration about axis XX, mm |

Rxp | Maximum radius of gyration about major principal axis (single angle), mm |

Ry | Radius of gyration about axis YY, mm |

Ryp | Minimum radius of gyration about minor principal axis (single angle), mm |

Ry0 | Radius of gyration about axis YY (0 mm back-to-back), mm |

Ry8 | Radius of gyration about axis YY (8 mm back-to-back), mm |

Ry10 | Radius of gyration about axis YY (10 mm back-to-back), mm |

Ry12 | Radius of gyration about axis YY (12 mm back-to-back), mm |

Ry16 | Radius of gyration about axis YY (16 mm back-to-back), mm |

Ry20 | Radius of gyration about axis YY (20 mm back-to-back), mm |

SA | Surface area per metre, m |

Shp | Shape identification code |

Slp | Slope of tapered flange (tangent of angle) |

Sx | Elastic section modulus about axis XX, mm^3 |

Sx1 | Elastic section modulus about axis XX, top flange, mm^3 |

Sx2 | Elastic section modulus about axis XX, bottom flange, mm^3 |

Sy | Elastic section modulus about axis YY, mm^3 |

Sw | Warping statical moment, mm^4 |

T | Thickness of flange, leg or wall, mm |

TanA | Tangent of rotation angle between geometric and principal member axes (single angle) |

Tdes | Design thickness of wall for hollow structural sections. For HSS produced to ASTM A500, Tdes = 0.90 T |

T1 | Thickness of tapered flange at tip, mm |

T2 | Thickness of tapered flange at flange-web junction, mm |

Use | Normal use, 1-column, 2-column or beam, 3-beam, 0-other |

W | Thickness of web, mm |

Wn | Normalized unit warping function, mm^2 |

Wt_i | Weight per length (Imperial units), lb/ft |

X | Horizontal distance between centroid and outside face of web or vertical leg, mm |

Xo | Distance between centroid and shear centre along geometric axis XX, mm |

Xop | Distance between centroid and shear centre along major principal axis, mm |

Y | Vertical distance between centroid and outside face of flange or horizontal leg, mm |

Yo | Distance between centroid and shear centre along geometric axis YY, mm. For WRF sections, the shear centre is located between the centroid and the larger flange |

Yop | Distance between centroid and shear centre along minor principal axis, mm |

Yt | Vertical distance between outside face of top flange and centroid, mm |

Zx | Plastic modulus about axis XX, mm^3 |

Zy | Plastic modulus about axis YY, mm^3 |