Structural Glazing Calculator

Silicone adhesion from glass weight and wind load.

Panel width (mm)

Panel height (mm)

Design wind pressure (Pa)

Total glass thickness (mm)

SSG sides (2 or 4)

Silicone design strength (kPa)

Tab to move between fields

Design bite (mm)

Joint thickness (mm)

Wind load bite (mm)5.4

Dead weight bite (mm)49.1

Sealant perimeter (m)7.8

Sealant volume (mL/panel)21,356

Cartridges per panel68.89

Glass panel weight (kg)90

How to Use This Calculator

Enter the glass panel width and height.
Set the design wind suction pressure and structural silicone bite dimension.
Input structural silicone adhesive strength.
Review the required silicone bite to resist the design load.
Verify the calculated bite exceeds the minimum per ASTM C1184 and manufacturer requirements.

How the result changes with Panel height (mm)

Panel width (mm): Glass panel width (daylight opening).
Panel height (mm): Glass panel height (daylight opening).
Design wind pressure (Pa): Design wind suction pressure per ASCE 7 or local code.
Total glass thickness (mm): Total glass build-up thickness (e.g., 6+4 laminated = 10 mm).
SSG sides (2 or 4): 2-sided SSG: two edges bonded, two mechanically captured. 4-sided: all edges bonded.
Silicone design strength (kPa): Allowable tensile stress of structural silicone. Typical: 140 kPa (Dow 995), 210 kPa short-term.

Wind load bite (mm): Required silicone bite depth from wind suction alone.
Dead weight bite (mm): Required bite from glass self-weight (4-sided SSG only).
Design bite (mm): Governing bite with 1.5× safety factor, rounded up. This is the bonded contact width.
Joint thickness (mm): Sealant depth (glueline thickness). Typically 50% of bite, min 6 mm.
Sealant perimeter (m): Total bonded perimeter per panel.
Sealant volume (mL/panel): Volume of structural silicone required per panel.
Cartridges per panel: Number of 310 mL sealant cartridges per panel.
Glass panel weight (kg): Weight of the glass panel only.

Identify Input Parameters
4 parameters
Panel width (mm) = 1500, Panel height (mm) = 2400, Design wind pressure (Pa) = 2000, Total glass thickness (mm) = 10 = 6 input(s) provided
Calculate Design bite
Design bite = ceil(governingBite * 1.5)
74 = 74
Calculate Joint thickness
Joint thickness = max(6, round(designBite * 0.5))
37 = 37
Calculate Wind load bite
Wind load bite = (windPressure * tributarySpan) / (2 * siliconeStrength * 1000)
5.4 = 5.4
Calculate Dead weight bite
49.1 = 49.1