This International Standard establishes simplified representations of sanitary appliances, for use on Plans and diagrams of sanitary installations in buildings. These representations are intended primarily for use on Plans and diagrams to scale 1 : 50. For smaller scale drawings more simplified representations may be used, and for larger scale drawings, more detailed representations may be used. For diagrams the representation in the column “Elevation” will normally be appropriate. If necessary, to make the drawing clearer, the views may be combined with Symbols and/or abbreviated component references, which are explained on the drawing or elsewhere. If stencils are used the corners of the representations might be rounded.