Which of these symbols is not typically used to denote plumbing fixtures on blueprints?

• A. Refrigerator
• B. Toilet
• C. Tub
• D. Shower

Answer: (A)

The symbol representing a refrigerator is not typically used to denote plumbing fixtures on blueprints. Plumbing fixtures generally include components that are directly associated with water supply and drainage systems, such as toilets, tubs, and showers. These fixtures are essential components of a building's plumbing system and, therefore, are represented with specific symbols that convey important information for installation and design.

In contrast, the refrigerator is considered an appliance rather than a plumbing fixture. While it may require water for features like ice makers and dispensers, it is not itself connected to the plumbing system in the same way that the other fixtures are. Thus, it does not fall within the category of items typically indicated on plumbing-related blueprints.