What is the purpose of a legend in blueprints?

The purpose of a legend in blueprints is to serve as a list of symbols used in the document. It provides clarity by explaining the meaning of various symbols and notations found throughout the drawings. This is crucial for anyone interpreting the blueprints, as it ensures that all parties understand the specific representations of components like electrical fixtures, plumbing lines, and structural elements. Without a legend, the blueprints could be misinterpreted, leading to errors in construction or installation.

In a blueprint, symbols are often used to represent various items concisely. The legend acts as a reference key, allowing users to quickly decipher what each symbol corresponds to within the context of the project. This facilitates better communication among contractors, engineers, and architects, ensuring everyone is on the same page regarding the project specifications.