Overview
- Primary topic
- Wind load
- Engineering basis
- Vertical glazing
- Review status
- Project-specific verification required
Wind Pressure and Suction
The example applies +1.2 kN/m² pressure and −1.2 kN/m² suction. Equal action magnitudes produce equal absolute stress and deflection for this symmetric monolithic pane and support condition.
ULS and SLS Separation
The ULS combination applies the design factor to the wind action and checks stress. The SLS combination retains the service wind action and checks deflection against the selected 18.462 mm limit.
Engineering Review
Support and Span
The 1200 × 1800 mm pane is supported continuously on four edges. The shorter 1200 mm dimension controls the displayed span-based deflection limit.
Project Wind Basis
The example does not determine site wind pressure. Project wind actions must come from the design brief, applicable loading standard, National Annex or façade wind assessment.
Worked Example: Vertical Glazing 10 mm Monolithic
The example demonstrates the software route and does not establish the project wind action.
- Pane size
- 1200 × 1800 mm
- Orientation and support
- Vertical, four edges supported
- Build-up
- 10 mm monolithic glass
- Glass treatment
- Annealed float glass
- Applied action
- +1.2 / −1.2 kN/m² wind
- Analysis route
- Auto / EN 16612 criteria
- Governing combination
- 1.5 Wind
- Design action
- 1.800 kN/m²
- Calculated response
- 12.279 N/mm² stress
- Utilization or ratio
- 0.491 utilization
- Governing combination
- Wind
- Design action
- 1.200 kN/m²
- Calculated response
- 3.119 mm deflection
- Utilization or ratio
- 0.169 of 18.462 mm limit
The reported pass status belongs only to this pane, wind input, support model and material selection. Frame flexibility and project-specific limits require separate review.
Example VitraLab Result Presentation
The exact worked values are published as text above. This related result figure shows the separate ULS and SLS review format used by VitraLab.
Frequently Asked Questions
Where should the example wind pressure come from?
Use the project design brief, applicable loading standard, National Annex or a project-specific façade wind assessment.
Why are ULS stress and SLS deflection checked separately?
ULS reviews design strength under factored actions, while SLS reviews movement under service actions and the selected deflection limit.
Does a four-edge glass result include frame flexibility?
No. The pane model uses the selected glass support condition. Supporting-frame movement and connection flexibility require separate project review.
Engineering content is prepared and maintained by VitraLab Engineering. Worked examples show how the current calculator treats a defined case; they do not replace project-specific verification.