Metal Stud Limiting Height Calculator

What Is Limiting Height?

Limiting height is the maximum wall height a stud can safely support under given conditions. It depends on:

• Stud size (e.g., 3-5/8” or 6”)
• Steel gauge (e.g., 20 gauge or 18 gauge)
• Bracing conditions (single or double layer of drywall)

Engineers use this value to ensure walls meet strength and safety requirements under lateral loads, typically assumed at 5 pounds per square foot (psf).

In plain terms: it’s the tallest your wall can go before the studs risk bending or failing.

Why It Matters in Construction

The limiting height impacts both safety and design flexibility:

• Safety Compliance – Ensures the framed wall won’t buckle under load.
• Cost Control – Avoids overbuilding with unnecessarily heavy studs.
• Material Selection – Helps you choose the right stud size and gauge.
• Project Efficiency – Saves time compared to manual table lookups.

Whether you’re an architect, contractor, or DIY builder, this calculator helps you plan smarter.

How the Calculator Works

The calculator uses standard engineering tables for cold-formed steel framing. Here’s the simple process:

1. Select Stud Size – Choose 3-5/8” or 6” studs.
2. Choose Steel Gauge – Pick between 20 ga (lighter) or 18 ga (heavier duty).
3. Select Bracing Condition – Single-layer or double-layer drywall.
4. Click Calculate – Instantly see the limiting height in feet and inches.

Example

• Stud size: 3-5/8”
• Gauge: 20 ga
• Bracing: Single-layer drywall

Result: 13’ 0” (156 inches) maximum wall height.

Switching to 18 ga studs with double-layer drywall raises the limit to 21’ 0” (252 inches).

This shows how different materials and bracing conditions impact performance.

Benefits of Using This Tool

Fast & Accurate – Get reliable results in seconds.
NLP-Friendly Interface – Plain inputs, no engineering jargon.
Easy for Everyone – From professionals to DIY users.
Decision Support – Compare stud sizes and bracing conditions side by side.
Free & Accessible – No login or technical training needed.

Important Notes & Disclaimer

While the calculator is a powerful planning tool, remember:

• It assumes a lateral load of 5 psf.
• It provides approximate values only.
• Openings (windows, doors) or unusual conditions may reduce the allowable height.
• Always consult a licensed structural engineer for final approval.