Definition of TGA
TGA is an abbreviation for "Technische Gebäudeausrüstung" (Technical Building Services), also commonly known as supply engineering, building services, or building technology. This generally encompasses all technical measures responsible for the technical supply of above-ground structures (buildings).

Technical building services generally include all building technology trades, including energy-related systems (such as electrical systems, gas and water systems, or heat generation systems), systems for material disposal (such as wastewater systems, etc.), as well as telecommunications systems (such as data networks, security technology, fire alarm technology, etc.).

The Classic Sub-Areas
A specific subdivision of the individual TGA trades takes place in both DIN 276 (regarding cost groups for above- and below-ground construction) and in the HOAI (Fee Schedule for Architects and Engineers). The trades are thus divided into:

– Wastewater, water, and gas systems
– Heat supply systems
– Air conditioning systems
– Electrical systems
– Communication, security, and information technology systems
– Conveying systems
– Usage-specific and process engineering systems
– Building and system automation
– Other measures for technical systems

Furthermore, technical building services systems also exist in the cost groups of civil engineering measures and outdoor facilities, which have not been considered here.

Share of TGA in Today's Construction Projects
In the context of technological development and the ever-increasing complexity of technical systems in residential and commercial buildings or special-purpose buildings, TGA trades have gained increasing significance over the past few decades.
Today, depending on the type of building, the share of technical building services in above-ground construction is estimated at 25 – 60%.

Furthermore, within the framework of the federal government's economic goals and the general heightened public awareness of environmental protection, renewable energy generation systems are becoming increasingly important, which are exclusively assigned to TGA. These include not only open-space photovoltaic systems or so-called solar parks, but also wind turbines, combined heat and power plants, or electric charging infrastructure systems for electric mobility.

Typical Specialist Contractors
Typical specialist trade contractors in technical building services include:

– Electrical installation companies
– Heating and plumbing companies
– Ventilation construction companies
– Specialist companies for telecommunications technology
– Specialist companies for fire alarm technology
– Specialist companies for earthing and lightning protection systems
– Specialist companies for sprinkler systems
– Civil engineering companies for infrastructure systems
– and other specialist companies / construction firms

Our Engineering Office for TGA
As an engineering office in the field of technical building services, we are fully at your side when it comes to planning, construction supervision / site management, construction support, and assessment upon request. We develop efficient and realistic concepts and accompany construction projects through to the final completion of the technical systems. Since we are not only building technology engineers but also building physicists, we naturally take into account all necessary aspects of energy efficiency in order to offer future-oriented solutions.