Fire resistant glazing (classification)

Fire resistant glazed elements are tested systems of frames and infills (glass), sealants and auxiliary materials which, in the event of a flashover over the test period, oppose the following resistances in accordance with DIN EN 357 “Fire-resistant glazing made of transparent or translucent glass products”:

  • Load bearing capacity R
  • Room closure E
  • Radiation reduction W
  • Isolation I
  • Smoke protection S
  • Self-closing C

The classification of a system always consists of a combination of one or more letters and the associated minutes of the resistance time.

The letter G (designation from DIN 4102) corresponds to the letter E (designation for room closure from DIN EN 357), the letter F has the equivalent EI (room closure and insulation).

Further requirements are formulated in DIN 4102 “Fire resistance of building materials and components” and DIN EN 13501-1 “Classification of construction products and types of fire behaviour”.

Proper processing of the system may only be carried out by the applicant for the technical approval of the fire protection system - certified companies in accordance with the requirements of technical approval (abZ) or ZiE.

Fire retardant:

Building designation of the State building regulation corresponds to a fire resistance of 30 minutes, e.g. F (EI) 30 or G (E) 30.

Highly fire retardant:

Building designation of the State building regulations corresponds to a fire resistance of 60 minutes, e.g. F (EI) 60 or G (E) 60.

Fire resistant:

Building designation of the State building regulations corresponds to a fire resistance of 90 minutes, e.g. F (EI) 90 or G (E) 90.

Fire resistance classes according to DIN 4102 for fire resistant glazing:

Fire resistance class G (E):

Translucent building elements that prevent the propagation of fire and smoke according to their fire resistance duration, but do not significantly hinder the passage of thermal radiation.

Fire resistance class F (EI):

Translucent building elements, which also hinder the passage of thermal radiation according to DIN 4102 according to their fire resistance duration.

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