How To Calculate Closed Stringers For Straight Stairs Using The RedX Stairs App

Building stairs with closed stringers can be simplified using the RedX Stairs App. This guide will walk you through the necessary measurements and customization options, ensuring your staircase is both functional and aesthetically pleasing.

Measurements Required

To begin, gather the following information to enter into the app:

• Total Stair Rise: The vertical distance the stairs will cover.
• Number of Risers: The total number of steps.
• Stair Top Connection Type: Choose from different connection types:
  • Top Tread Down: The tread sits on top of the stringer.
  • Flush Half Tread: The tread is flush with the top edge of the stringer but extends halfway over.
  • Flush Full Tread: The tread is completely flush with the stringer edge.
• Tread Length: The total width of the stair.
• Tread Thickness: The thickness of the treads.
• Riser Thickness: The thickness of the riser boards.
• Nosing Width: The distance the tread extends beyond the riser.
• Closed Stringer Details: Additional measurements for closed stringers, including:
  • Stringer Top Offset: The distance from the top of the stringer to the first tread.
  • Stringer Nosing Offset: The distance the nosing extends over the stringer.

Stair Angle Details

Entering any of these three values will set the stair angle:

• Stair Angle: The angle of the stair incline.
• Single Step Run: The horizontal distance of a single step.
• Stair Total Run: The total horizontal distance covered by the stairs.

Stair Headroom

You can set either the headroom height or the top stair opening size, and the app will calculate the other:

• Headroom Height: Set the headroom height, and the app will show the required top stair opening size.
• Top Floor Opening Width: Enter the width of the top floor opening, and the app will calculate the headroom height.

Standard Headroom Height

Typically, the standard headroom height is 6'8" (203 cm). This ensures sufficient space for users to comfortably use the stairs without hitting their heads.

Visualizing and Finalizing Your Design

As you make adjustments, the 3D stair plan updates in real-time. This feature allows you to see the measurements and design instantly, ensuring all changes are accurate and meet your expectations.

Cut List

The app generates a detailed cut list that includes:

• Stringer Blueprint
• Tread and Riser Plans

You can select any component from the cut list to view the specific plan and dimensions, ensuring precise measurements for every part of your staircase.

Exporting Your Blueprint

Once you're satisfied with your design, the app generates a detailed blueprint. This blueprint includes all necessary measurements and building instructions. You can easily email, print, or export the blueprint directly from the app, making it convenient to share with contractors or use on-site during construction.

Conclusion

Using the RedX Stairs App, you can efficiently calculate and design stairs with closed stringers, enhancing both functionality and aesthetic appeal. The app also supports other types of stairs such as straight, spiral, corner, and winder stairs, providing versatile solutions for your stair-building needs.

Do you think this is something that you would use? Let me know in the comments.

Thank you for reading!