How should dimensions be presented on a blueprint?

A blueprint should present dimensions in both metric and imperial units to accommodate various stakeholders who may be interpreting the plans. This practice enhances clarity and usability for a diverse audience, including contractors, engineers, and clients who might prefer one system over the other. With the increasing globalization of construction projects, utilizing both measurement systems helps ensure that everyone involved can accurately understand and execute the plans without confusion.

The other choices do not meet the requirements of effective communication in blueprints. Presenting dimensions only in inches limits the accessibility of the blueprint to those accustomed to the metric system. Using a fraction format could also lead to misinterpretations and is not standard practice for professional blueprints. Random measurements would create disorder and confusion, making it nearly impossible to ensure precise construction. Therefore, the standard practice of including both metric and imperial units provides a clear, comprehensive, and professional approach to drafting blueprints.