Building materials consisting of glass; clear glass for building purposes; doors made of glass for buildings; glass for the windows of buildings; glass for use in buildings; glass for windows; glass for windows in buildings; glass panels for windows; glass windows; glazing elements made from glass; multilayer safety glass for glazing buildings; safety glass; safety glass for building; security glass for use in building; sheet glass for use in building; sheets of glass for building; tempered glass for use in building; tinted glass for use in building; toughened glass for building; window glass (except glass for vehicle windows); window glass for building; window glass for use in building; window glass, for building; windows made of laminated safety glass for buildings; windows made principally of glass