INFOTEXT

Build-up

The special feature of OKALUX Light Diffusing Insulating Glass is the capillary slab integrated in the cavity; the glass thicknesses depend on static requirements: Outer pane Capillary slab with glass fibre tissues 8-16 mm Inner pane

Dimensions and installation

smaller glass dimension < 130 cm no restrictions 130 cm < smaller dimension < 200 cm light transmission not more than 32% smaller glass dimension > 200 cm subdivision by joint with aluminium profile OKALUX Light Diffusing Insulating Glass is installed like normal insulating glass. To cover the capillary structure, glass fibre tissue is fitted in the cavity on both sides. For reasons of tolerance, the glass fibre tissue must be cut so that the size is reduced by approx. 1.5 mm. To avoid direct light penetrating through the edge of the capillary slab and the adjoining spacer bar of the insulating glass, the unit edge cover must be at least 15 mm. With widths and heights exceeding 2 m, the cover has to be increased to 20 mm on account of the need for a reinforced perimeter seal. For frameless glazing systems, it is recommended that the perimeter should be shaded by a dark ceramic frit.

Planning instructions

Builder-owners and architects must be able to technically assess the effect of glazing in daylight terms. Okalux offers such calculations as a voluntary additional service. The daylight-relevant properties of the room to be examined must be known; in particular, these are: ? room geometry, window dimensions ? approximate degree of reflection of the surfaces forming the room boundaries The so-called daylight quotient (D) in accordance with DIN 5034, Part 3, is relevant for the evaluation of the ambient daylight. This gives the ratio between the horizontal luminous intensity indoors and out of doors manufacturers, under a completely overcast sky. This value can be calculated for different glazing variants using the existing simulation tools. The customer can thus assess the light-directing effects of special products, in comparison with normal glazing as well. In addition to the assessment in accordance with DIN, virtual images can visualise the light distribution in the rooms. Slight fluctuations in the density of the capillary slab and the diameter of the capillary slab may be visible. Under certain lighting conditions, fine lines may be visible within the capillary slab due to production-specific reasons.
OKALUX GmbH 97828 Marktheidenfeld Germany Tel.: +49 (0) 9391 900-0 Fax: +49 (0) 9391 900-100 www.okalux.com info@okalux.de Infotext OKALUX engl 28.03.2007 3 (3)