Draw stairs in 3D easily with IRONCAD Steel Stairs

Draw stairs in 3D easily with IRONCAD Steel Stairs
Emil Rindell

Emil Rindell

Jonas Bryntesson

Jonas Bryntesson

Henrik Andersson

Henrik Andersson

February 9, 2026

Emil Rindell

Emil Rindell

Jonas Bryntesson

Jonas Bryntesson

Henrik Andersson

Henrik Andersson

February 9, 2026

How to draw stairs in 3D

Steel Stairs in ICMechanical

You can find the Steel Stairs command in the ICM Mech catalog. It is used to place steel stair structures consisting of steps, stringers, and a landing in your 3D scene.

Drag the command onto the stage and set the options. To scale the scale, drag the preview handle or enter the values in the dialog box.

The Steel Stairs dialog box is divided into four different sections: Stair Geometry, Lateral Elements, Step, and Landing. Read below for a description of each section.

Stair Geometry

In the first section, you can set the overall dimensions of the staircase (or drag the handles in the preview).

Lateral Elements

In the second section, you can select the type of stair stringers, their size, location (both, right only, left only), and position (inside or outside the size). The first icon allows you to change the steel type, while the second icon allows you to use your own steel profiles. Read further down in the post for more information about this.

When you choose to use your own steel profiles, a drop-down button appears for selecting the profile, and a button for setting the size is also displayed.

Step

In the third section, you can select the type of steps, their size, the offset in relation to the side parts, and the minimum rise between steps (or, slightly above, specify the number of steps). The info icon allows you to display a diagram for the correct dimensioning of the staircase.

Landing

The fourth section is used to set the rest plane. Here you can select the type (straight, right, left, or centered) and specify its size.

Search paths for files

The first icon at the top left of the dialog box opens the settings for the folders in the Steel Stair Library, where you can save custom components such as side parts, steps, landings, and railings.

Use and create your own steel profiles

In order to adapt the elements to the selected dimensions, all models that make up the staircase must be parametric and saved in the respective folder in the library.

Here are two examples of side parts:

Lateral1 is a part with a forward-facing parametric section:

In order to adapt the side parts to the size of the staircase, they must contain the following parameters:

  • StairLength – corresponds to L in the stair geometry, i.e. the length of the staircase
  • StairHeight – corresponds to H in the stair geometry, i.e. the height of the staircase
  • Width – corresponds to W in the profile, i.e. the width of the side section
  • Height – corresponds to H in the profile, i.e. the height of the side section
  • Thickness – corresponds to Th, i.e. the thickness of the side section
  • FrontalModel – equal to 1, indicates that the parametric section is forward (and therefore not the section of the adapted steel)

Lateral2 is a part with a lateral parametric section (the section of the customized steel):

In this case, the Length parameter (for the profile) does not correspond to the length of the staircase, but is used to calculate the hypotenuse between the Length (L) and Height (H) of the staircase.

  • Width – corresponds to W in the profile, i.e. the width of the side section
  • Height – corresponds to H in the profile, i.e. the height of the side section
  • Thickness – corresponds to Th, i.e. the thickness of the side section
  • C – corresponds to C, i.e. the size of the flange on the side section

Here are two examples of steps:

Step03_SM is a sheet metal part (SheetMetal part):

In order to adapt the steps to the size of the staircase, the steps must contain the following parameters (at the part or assembly level):

  • Width – corresponds to W in the stair geometry, i.e. the width of the staircase
  • Depth – corresponds to d for the step, i.e. the depth of the step
  • Thickness – corresponds to th, i.e. the thickness of the step

Optional, only if screws are available:

  • ScrewOffset – the distance from the screw to the edge of the step

Step06-S_Bolt is a compilation of a step with a grid (simplified) and screws, nuts, and washers.

FAQ