Byggnadsdelar

This document provides ergonomic requirements and recommendations for accessible doors and handles of consumer products so that users from a population with the widest range of user needs, characteristics and capabilities are able to open and close the doors of consumer products with ease.

It applies to all kinds of consumer products equipped with doors and handles. It also applies to doors through which items can be inserted or retrieved, and to those that are used for maintenance purposes. Each of its design considerations is based on ergonomic principles that are necessary for making the doors and handles of consumer products accessible to a wider range of users, including those with disabilities.

This document defines test and calculation methods for the determination of the reflection and transmission characteristics to be used to determine the thermal and visual comfort performance classes of external blinds, internal blinds and shutters, as specified in prEN 14501:2018. This document also specifies the method to determine the darkening performance of external blinds, internal blinds and shutters, as specified in prEN 14501:2018. This document applies to the whole range of shutters, awnings and blinds defined in EN 12216, described as solar protection devices in this document. Some of the characteristics (e.g. gtot) are not applicable when products are not parallel to the glazing (e.g. folding-arm awnings). NOTE 1 Informative Annex D presents an approach for the determination of characteristics in case of projectable products. Retro-reflecting products are outside the scope of this document for reflectance measurements. NOTE 2 Retro-reflecting products refer to products for which the reflected radiation comes back to the light source in the same direction. Products using a significant amount of fluorescent are outside the scope of this document. NOTE 3 "Significant amount" refers to materials which are designed to be fluorescent or retroreflective and marketed as such. It does not refer to trace amounts of materials exhibiting fluorescence, e.g. for colour or identification purposes. Small amounts of materials such as titanium dioxide, which are not primarily included to achieve fluorescence, may be present.

This document applies to the whole range of shutters, awnings and blinds defined in EN 12216, described as solar protection devices in this document.

It specifies the corresponding properties and classifications:

— relating to thermal comfort:

— the solar factor (total solar energy transmittance);

— the secondary heat transfer factor;

— the direct solar transmittance;

— relating to visual comfort:

— the darkening performance;

— the night privacy;

— the visual contact with the outside;

— the glare control;

— the daylight utilization;

— the rendering of colours.

NOTE For other purposes, more detailed methods using different parameters can be used.

Some of the characteristics (e.g. gtot) are not applicable when solar protection devices are not parallel to the glazing (e.g. folding-arm awnings).

This document is not applicable to the solar protection devices using fluorescent materials.