The use of symbols and hatching as part of construction drawing practice
Designers involved in the graphical detailing process on construction and civil engineering projects use a range of symbols, hatching and graphic conventions. B S 1192 Part 3 gives recommendations for these and establishes rules and proposals associated with these symbols.

The simpler the graphics the easier it is for a wide range of users to understand. The features of specific construction elements can be highlighted using symbols and in effect this saves on the need to add explanatory notes. Simplified representations incorporating essential shapes or features of a construction object when drawn to scale allow designers to clearly communicate their requirements to other members of the design and construction team.
The initial users of the design information will be the designers themselves, ranging from architects and civil engineers to building services engineers and project managers. Quantity surveyors, building control personnel and the contractor's office and site team will all make use of and regularly refer to the project drawings, depending on the size and value of the contract.

The graphic conventions, hatching and symbols referred to in B S 1192 Part 3 are used extensively throughout the United Kingdom but are not internationally recognised; although many designers around the world do use these or very similar symbols. They are intended for practical applications throughout the design development on construction projects and hopefully enable coordinated project information to be produced in a standardised format for the construction industry.