Glazing :
1. In all buildings laminated glass shall be used, consisting of two layers of float glass of a minimum of 3 mm each and a polyvinyl-butyral (PVB) interlayer of 1.9 mm
2. These glazing units, prefabricated by the Manufacturer, shall be composed of two spaced glass panes with a cavity of dehydrated air.
Each unit shall consist of:
- an outer pane of normal float glass, minimum thickness 5 mm ;
- an air space, minimum 6 mm ;
- an inner pane of laminated glass consisting of two layers of glass, minimum thickness 2 mm each, and a PVB interlayer of 1.9 mm.
The outer and inner pane of the unit shall be fixed to the spacers of the air cavity by a polysulphide adhesive compound. The edges of the units shall not be provided with a channel-shaped metal cover.
3. For other buildings, glazing shall be ordinary sheet glass of 4mm thickness."