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DGU tools

Double glazing deflection and load sharing

Model the response of paired lites under uniform pressure, including load share factors (LS1/LS2) and adjusted resistance using typical annealed, HS, and TF combinations.

Load share factors reflect commonly adopted double-glazing design tables for paired monolithic glass.

Adjustments for heat-treated glass use glazing type factors (GTF) to scale the resistance contribution of each lite.

Pre-check summary

Provide cavity-independent lite data. Model assumes uniform load, consistent edge conditions, and no structural spacer contribution.

  • Overall span
  • Design pressure
  • Outdoor lite
  • Indoor lite
Unit inputs
Provide inside/outside lite data and the design pressure to evaluate the unit.

Outdoor lite

Indoor lite

Results
Includes lite-specific deflection, load resistance, and safety factors.

Enter your unit data above and press calculate to review load share, resistance, and safety factors.