| phi | \(\displaystyle 0.9\) | | CSA S16-19 Cl. 13.1 a) (phi = 0.90, structural steel) | 2026-09-29 |
| E | \(\displaystyle 200\ \mathrm{GPa}\) | | CSA S16-19 Cl. 3 symbols (E = elastic modulus of steel, 200 000 MPa assumed) | 2026-10-02 |
| G | \(\displaystyle 77\ \mathrm{GPa}\) | | CSA S16-19 Cl. 3 symbols (G = shear modulus of steel, 77 000 MPa assumed) | 2026-10-02 |
| b | \(\displaystyle 76.2\ \mathrm{mm}\) | | CISC SST 12.1, L76x76x6.4, D (76.2 mm); S16 Cl. 11.3.1 b) full nominal leg | 2026-10-02 |
| t | \(\displaystyle 6.35\ \mathrm{mm}\) | | CISC SST 12.1, L76x76x6.4, T (6.35 mm) | 2026-10-02 |
| A_0 | \(\displaystyle 927\ \mathrm{mm}^{2}\) | | CISC SST 12.1, L76x76x6.4, A_Th (927 mm^2) | 2026-10-02 |
| lambda_l | \(\displaystyle \frac{b}{t}\) | | CSA S16-19 Cl. 11.3.1 b) (b_el of a leg of an angle is the full nominal dimension) and Table 1 | 2026-10-02 |
| lambda_3 | \(\displaystyle \frac{250}{\sqrt{\frac{F_{y}}{1\ \mathrm{MPa}}}}\) | S16 Cl. 11, Table 1, legs of angles | CSA S16-19 Table 1, legs of angles (b_el/t <= 250/sqrt(F_y)) | 2026-10-02 |
| A_e | \(\displaystyle 1 \cdot A_{0}\) | | CSA S16-19 Cl. 13.3.4 a) (A_e from reduced widths meeting Table 1; A when Table 1 is met) | 2026-10-02 |
| r_x | \(\displaystyle 23.6\ \mathrm{mm}\) | | CISC SST 12.1, L76x76x6.4, Rx (23.6 mm); S16 Cl. 13.3.2.2 r_x about geometric axis parallel to connected leg | 2026-10-02 |
| KL_r | \(\displaystyle 72 + \frac{0.75 \cdot L}{r_{x}}\) | S16 Cl. 13.3.2.2 a) | CSA S16-19 Cl. 13.3.2.2 a) and b) (72 + 0.75 L/r_x for L/r_x <= 80; 32 + 1.25 L/r_x <= 200 above) | 2026-10-02 |
| lambda_c | \(\displaystyle \mathrm{KL}_{r} \cdot \sqrt{\frac{F_{y}}{1.974\ \mathrm{TPa}}}\) | | CSA S16-19 Cl. 13.3.2.1 (lambda = sqrt(F_y/F_e), F_e = pi^2 E/(KL/r)^2) | 2026-10-02 |
| f_s | \(\displaystyle F_{y} \cdot \left(1 + \lambda_{c}^{2 \cdot 1.34}\right)^{\frac{-1}{1.34}}\) | S16 Cl. 13.3.1, n = 1.34 | CSA S16-19 Cl. 13.3.1.1 and Cl. 13.3.2.1 (C_r = phi A F_y / (1 + lambda^2n)^(1/n), n = 1.34, lambda = sqrt(F_y/F_e), F_e = pi^2 E/(KL/r)^2) | 2026-09-29 |
| C_r | \(\displaystyle \phi \cdot A_{e} \cdot f_{s}\) | | CSA S16-19 Cl. 13.3.2.1 and Cl. 13.3.4 a) (C_r = phi A_e F_y/(1 + lambda^2n)^(1/n)) | 2026-10-02 |
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