tapered_flange_i_section#

sectionproperties.pre.library.steel_sections.tapered_flange_i_section(d: float, b: float, t_f: float, t_w: float, r_r: float, r_f: float, alpha: float, n_r: int, material: Material = Material(name='default', elastic_modulus=1, poissons_ratio=0, yield_strength=1, density=1, color='w')) → Geometry[source]#

Constructs a tapered flange I section.

Constructs a tapered flange I section centered at (b/2, d/2), with depth d*, mid-flange thickness t_f, web thickness t_w, root radius r_r, flange radius r_f and flange angle alpha, using n_r points to construct the radii.

Parameters:

  • d (float) – Depth of the tapered flange I section

  • b (float) – Width of the tapered flange I section

  • t_f (float) – Mid-flange thickness of the tapered flange I section (measured at the point equidistant from the face of the web to the edge of the flange)

  • t_w (float) – Web thickness of the tapered flange I section

  • r_r (float) – Root radius of the tapered flange I section

  • r_f (float) – Flange radius of the tapered flange I section

  • alpha (float) – Flange angle of the tapered flange I section in degrees

  • n_r (int) – Number of points discretising the radii

  • material (Material) – Material to associate with this geometry

Returns:

Tapered flange I section geometry

Return type:

Geometry

Example

The following example creates a tapered flange I section with a depth of 588 mm, a width of 191 mm, a mid-flange thickness of 27.2 mm, a web thickness of 15.2 mm, a root radius of 17.8 mm, a flange radius of 8.9 mm and a flange angle of 8°, using 16 points to discretise the radii:

from sectionproperties.pre.library import tapered_flange_i_section

tapered_flange_i_section(
    d=588, b=191, t_f=27.2, t_w=15.2, r_r=17.8, r_f=8.9, alpha=8, n_r=16
).plot_geometry()

(Source code, png, hires.png, pdf)

../_images/sectionproperties-pre-library-steel_sections-tapered_flange_i_section-1.png

Tapered flange I section geometry#