Protection from falling, collision and impact: Approved Document K

O N L I N E V E R S I O N K4 Protection against impact with glazing Glazing in small panes 5.6 In the context of this approved document, a ‘small pane’ is an isolated pane or one of a number of panes held in glazing bars, traditional leaded lights or copper lights (see Diagram 5.3). 5.7 Small panes should be provided in accordance with all of the following. a. In a small annealed glass pane, use glass with a minimum 6mm nominal thickness except in the situation described in b. b. In traditional leaded or copper lights, when fire resistance is not important, you may use 4mm glass. c. Use the dimensions and areas shown in Diagram 5.3. See paras 5.6–5.7 max. 250mm max. 250mm Maximum area of single pane not to exceed 0.5m², small panes of annealed glass should not be less than 6mm thick Diagram 5.3 Dimensions and areas of small panes Building Regulations 2010 AAAApppppppprrrroooovvvveeeedddd DDDDooooccccuuuument K, 2013 edition 33 OOO NNN LLL III NNN EEE VVV EEE RRR SSS III OOO NNN