Symbols make our everyday lives much easier. They point the way, indicate dangers or give recommendations for action. This is no different with sanitary and heating symbols.
They lay the foundation for ensuring that the technical infrastructure of a building is filled with life and functions permanently. Symbols create a generally understandable basis and facilitate a smooth BIM workflow.
But which elements are really relevant in the construction process? And how can they be used as efficiently as possible with software support? In this article, we provide an overview of the key symbols and their meaning.
The most important facts in brief
Plumbing and heating symbols create a uniform working basis
They are crucial for precise BIM
Software support facilitates integration
What are plumbing and heating symbols and why are they so important?
Plumbing and heating symbols are essential in the world of building technology. They serve as universal visual codes that plumbing and heating professionals use to quickly communicate information about different components and systems.
These symbols are part of a common language that engineers, architects, installers and builders use to understand, design and implement plans.
They enable a uniform representation of plumbing and heating systems on building plans, which makes planning, installation and maintenance considerably easier.
Their importance is particularly evident in actual construction practice:
Clear communication: Symbols offer an effective way of presenting complex information in an easily understandable way. This is crucial to avoid misunderstandings during planning and implementation.
Increased efficiency: Experts can work faster as they do not have to explain the meaning of different terms or drawings every time. This saves time and resources.
Uniformity: A uniform set of symbols ensures that all participants use the same standards and conventions. This is particularly important when different teams or companies are involved in a project.
Safety: Correct identification of plumbing and heating components is crucial to ensure that systems are properly installed and maintained. Errors can lead to serious problems.
What types of symbols play a role in floor plan creation?
When creating floor plans, symbols are crucial for conveying the information on the plans clearly and precisely. They serve as a universal language for all trades and make it possible to interpret complex building plans.

Figure: Schematic of a hydraulic system in the CAD program Trimble Nova with relevant sanitary and heating symbols
An overview of key symbols that play an important role in creating floor plans:
Architectural symbols: These symbols represent architectural elements such as walls, doors, windows, stairs and other components. They provide information about the position and size of these elements in the building and help to visualize the rooms.
Electrical symbols: Hugely important to show the placement of sockets, switches, light fittings and other electrical components. This not only ensures correct installation, but also the safety of the building.
Plumbing and heating symbols: Essential for labeling plumbing and heating systems such as water pipes, drains, radiators and fittings. They help to ensure the smooth operation of these systems and define individual pipe dimensions.
Furniture: Furniture symbols are used to make optimum use of the space. These show where beds, sofas, tables and other pieces of furniture should be placed.
Scale bars: Scale bars are symbols that indicate the scale of the floor plan. They are essential to ensure that the actual dimensions of the building are correctly understood in relation to the plan.
Directional arrows: Directional arrows indicate the orientation (north, south, etc.) of the floor plan. This is particularly important with regard to solar radiation and the planning of windows.
Sanitary and heating symbols
They are crucial for specialist planners in order to correctly dimension the building technology and pipe system. The most important elements at a glance:
Faucet: Usually shows a circle with a small cross in the middle. There are also variants for hot and cold water taps to indicate temperature requirements.
Drain: Similar to a tap, but with an arrow pointing downwards.
Radiator: Usually has a rectangular shape with a few lines or waves to illustrate the heat emission.
Pipes: Can be represented by lines with different directions and symbols to show the route of water or heating pipes. They are essential for visualizing the path of the water or heat in the building.
Toilet: A toilet is often depicted as a simple oval with a small rectangle to represent the seat and cistern.
Washbasin: Usually shown as an oval with a small circle above it to indicate the faucet.
Bathtub/shower: The symbols for bathtubs and showers vary depending on the type. A bathtub is often depicted as a simple oval shape, while a shower is characterized by small circles or lines for shower heads.
Conclusion - Uniform symbols in building planning are essential
Symbols are indispensable when planning a building in order to create a comparable and transparent working framework. They thus create a common basis for specialist tradesmen and planners.
Software solutions such as Trimble Nova can provide crucial support. As powerful CAD and calculation software, it is possible to efficiently integrate symbols into plans and display buildings in appropriate detail.
The seamless integration with Trimble Connect ensures that these models and the corresponding plumbing and heating symbols are available to all trades in a common data environment.