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SFS-EN 17871:2024:en

Glass in building. Spectrophotometric characteristics of glass products. Validation procedure for calculation tool.

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Scope
This standard provides a procedure to validate a calculation tool of spectrophotometric and thermal characteristics of the glass products following EN 410 or EN 673. It provides also the methodology to correctly use measured data in the calculation tool. The following characteristics are included in the scope of this standard: - light transmittance (tv) - light reflectance - both sides (rv, r'v) - solar direct transmittance (te) - solar direct reflectance – both sides (re, r'e) - total solar energy transmittance (solar factor or g value) (g) - thermal transmittance (U value) in the vertical position The following characteristics are excluded from the scope of this standard: - UV transmittance (tuv) - shading coefficient (SC) - general colour rendering index (Ra) - thermal transmittance (U value) at angles other than vertical

The standards writing body responsible for this document in Finland is General Industry Federation.
Product group(s)
81.040.20 Glass in building »
Relationships
Normative references
EN 12898:2019 Glass in building - Determination of the emissivity
EN 410:2011 Glass in building - Determination of luminous and solar characteristics of glazing
EN 673:2011 Glass in building - Determination of thermal transmittance (U value) - Calculation method
Technical committee
CEN/TC 129 Glass in building »
Directive
305/2011 Regulation (eu) No 305/2011 of the European Parliament and of the Council of 9 march 2011 laying down harmonised conditions for the marketing of construction products and repealing council directive 89/106/eec

http://ec.europa.eu »
Date of implementation
19.04.2024
Published
23.04.2024
Edition
1
Pages
13
Language(s)
English

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