← All calculators
0.74 for a wind gust; lower for sustained load.
Glass sizing estimator
EN 16612 with Wölfel/Bennison effective thicknessStress, deflection and utilisation of a glazing panel under wind.
Panel
mm
mm
kPa
Build-up
Outer pane
Factors
Make-up works
47% utilised
Max deflection
11.67 mm
Limit 25.0 mm
Max stress
19.17 MPa
Allowable 81.0 MPa
Panel weight
93.75 kg
Overall thickness
10.00 mm
Uniform wind on a four-edge simply supported panel, at one temperature and one load duration. Two limits worth knowing: the interlayer shear modulus is a single representative value, where a real PVB softens markedly with heat and time; and the load share across an IGU is taken as proportional to bending stiffness — the wind-only simplification, which ignores the gas spring and so does not cover climatic or barrier loads.
Take this make-up to suppliers who can price and fabricate it.
Find suppliers