Here is a list of all the blueprint symbols that are needed to make architectural, electrical and plumbing blueprints. Because of the scale, many of these symbols are hard to see on real blueprints. The electrical floor plan map below shows some of the symbols used by electricians.- Let’s start out with the Architectural symbols because they are usually bigger and they will be drawn into floor plans first. These are things like doors, windows, stairs, walls, cabinets and sinks- Here are the electrical symbols including communications symbols like phones, doorbells, and security systems.We’ll start out with electrical switches- There are many different types of electrical switches. It can be a bit confusing if you just look at   blueprints without studying what each symbol represents. Most of the symbols on these pages will be rarely used. The switches that are commonly used are the single pole, the three-way, double pole, circuit breaker, four-way, and dimmers, just to name a few. - Floor plans will have a lot of common switches so look at the symbols list and find the most common switches. These are the ones to pay attention to.- Finally, for the electrical symbols, we have the communications symbols. - Last up we have the plumbing symbols. Just like the electrical symbols, there are a lot of plumbing symbols, but only a few of them are commonly used.