DRAWINGS - HATCHINGS, SYMBOLS AND NOTIFICATIONS

Drawings ~ these are the principal means of communication between the designer, the builder and other parties to a contract. Drawings should therefore be clear, accurate, contain all the necessary information and be capable of being easily read. Design practices have their own established symbols and notations for graphical communication. Some of which are shown on this and the next three pages. Other guidance can be found in BS EN ISOs 4157 and 7519.

Hatchings ~ the main objective is to differentiate between the materials being used thus enabling rapid recognition and location. Whichever hatchings are chosen they must be used consistently throughout the whole set of drawings. In large areas it is not always necessary to hatch the whole area.

Symbols ~ these are graphical representations and should wherever possible be drawn to scale but above all they must be consistent for the whole set of drawings and clearly drawn.