DIN EN 1863-1:2012-02

This European Standard specifies tolerances, flatness, edgework, fragmentation and physical and mechanical characteristics of monolithic flat heat strengthened soda lime silicate glass of nominal thicknesses from 3 mm to 12 mm for use in buildings. Information on curved heat strengthened soda lime silicate glass is given in Annex A, but does not form part of this standard. This standard does not cover glass sandblasted after toughening. The 2000 edition of the standard has been completely technically and editorially revised. New terms and definitions have been included, for instance, edge deformation, local distortion and overall bow. Clauses 6 "Dimensions and tolerances" and 7 "Edge and/or surface work, holes, notches and cut-outs", in which these terms and definitions are applied, have been particularly revised. In the subclause "Tolerances and squareness" of clause 6, the squareness of rectangular glass panes is now expressed by the difference between its diagonals. The previous normative annex A for determination of the U value has been deleted. A new informative Annex (Annex B in the new edition) dealing with an alternative method for the measurement of roller wave distortion has been added. The committee responsible for this standard is NA 005-09-29 AA "Glas im Bauwesen (SpA zu CEN/TC 129 und ISO/TC 160; SpA zu CEN/TC 129/WG 2, CEN/TC 129/WG 3, ISO/TC 160/SC 1/WG 2, ISO/TC 160/SC 1/WG 3)" ("Glass in building (Mirror Committee for CEN/TC 129 and ISO/TC 160; Mirror Committee of CEN/TC 129/WG 2, CEN/TC 129/WG 3, ISO/TC 160/SC 1/WG 2, ISO/TC 160/SC 1/WG 3)") at DIN.