Usage¶

To use steel-helper in a project:

import steel_helper
from steel_helper import Member,Load

Axial Strength¶

Putting the following into a Jupyter Notebook

m1_1 = Member('W10X100')
m = m1_1

F_y = 50
F_u = 65
m.properties(F_y = F_y,F_u = F_u)

Lx = Ly = 10
Kx = Ky = 1
m.axial_strength(Lx = Lx,Kx = Kx,Ly = Ly,Ky = Ky)
m.myeqns.markfull("P_n")

Will produce .. code-block:: markdown

Ref | Variable | Equation | Equation_fill | Answer :-:|:-:|:-:|:-:|:-: E3-2 | Slenderness x | $$frac{(L_x * K_x)}{r_x}$$ | (10 ft * 1)/4.6 in | 26.087 dimensionless E3-2 | Slenderness y | $$frac{(L_y * K_y)}{r_y}$$ | (10 ft * 1)/2.65 in | 45.283 dimensionless E3-2,E3-3 | Slenderness check | $$4.71 * sqrt{frac{E}{F_y}}$$ | 4.71 * sqrt(29000 kip / in ** 2/50 kip / in ** 2) | 113.43 E3-2,E3-3 | F_e | $$(frac{(pi^2 * E)}{Slenderness^2})$$ | ((3.14^2 * 29000 kip / in ** 2)/ 45.283^2) | 139.58 kip / inch ** 2 E3-2,E3-3 | P_cr | $$(frac{(pi^2 * E * A)}{Slenderness^2})$$ | ((3.14^2 * 29000 kip / in ** 2 * 29.3 in ** 2)/ 45.283^2) | 4089.7 kip E3-2 | F_cr | $$(0.658^{(frac{F_y}{F_e})} * F_y)$$ | (0.658 ^(50 kip / in ** 2/139.58 kip / in ** 2) * 50 kip / in ** 2) | 43.038 kip / inch ** 2 E3-2 | P_n | $$(F_{cr} * A_g)$$ | 43.038 kip / in ** 2 * 29.3 in ** 2 | 1261 kip a | P_n_LRFD | $$P_n * phi$$ | 1261 kip * 0.9 | 1134.9 kip a | P_n_ASD | $$frac{P_n}{omega}$$ | 1261 kip / 1.67 | 755.1 kip

and .. code-block:: markdown

Ref | Variable | Equation | Equation_fill | Answer :-:|:-:|:-:|:-:|:-: E3-2 | Slenderness x | $$frac{(L_x * K_x)}{r_x}$$ | (35 ft * 1)/4.6 in | 91.304 dimensionless E3-2 | Slenderness y | $$frac{(L_y * K_y)}{r_y}$$ | (35 ft * 1)/2.65 in | 158.49 dimensionless E3-2,E3-3 | Slenderness check | $$4.71 * sqrt{frac{E}{F_y}}$$ | 4.71 * sqrt(29000 kip / in ** 2/50 kip / in ** 2) | 113.43 E3-2,E3-3 | F_e | $$(frac{(pi^2 * E)}{Slenderness^2})$$ | ((3.14^2 * 29000 kip / in ** 2)/ 158.49^2) | 11.394 kip / inch ** 2 E3-2,E3-3 | P_cr | $$(frac{(pi^2 * E * A)}{Slenderness^2})$$ | ((3.14^2 * 29000 kip / in ** 2 * 29.3 in ** 2)/ 158.49^2) | 333.86 kip E3-3 | F_cr | $$0.877 * F_e$$ | 0.877 * 11.394 kip / in ** 2 | 9.9929 kip / inch ** 2 E3-2 | P_n | $$(F_{cr} * A_g)$$ | 9.9929 kip / in ** 2 * 29.3 in ** 2 | 292.79 kip a | P_n_LRFD | $$P_n * phi$$ | 292.79 kip * 0.9 | 263.51 kip a | P_n_ASD | $$frac{P_n}{omega}$$ | 292.79 kip / 1.67 | 175.32 kip

Which is then rendered as

and