Mullion Spacing Calculator
Calculate maximum glass span and recommended mullion spacing based on glass thickness, wind load, and allowable deflection.
How to Use the Mullion Spacing Calculator
- Enter the glass thickness in mm.
- Enter the wind load in Pa.
- Enter the maximum allowable deflection in mm.
- Click Calculate for maximum span and recommended spacing.
Anwendungsfälle
- •Curtain wall design.
- •Storefront glazing layout.
- •Structural glass panel sizing.
- •Façade engineering.
Formel
Span = (384 × E × I × δ / (5 × q))^0.25. I = b×t³/12. Recommended spacing = 0.85 × max span.
Häufig gestellte Fragen
What is a mullion?
A mullion is a vertical dividing member between window panes or curtain wall panels.
What glass modulus should I use?
The elastic modulus of glass is approximately 70,000 MPa.
What deflection limit is standard?
Typically span/175 or 19 mm maximum for architectural glass.