
Engineering consultancy for structural design of building, industrial and civil engineering structures in reinforced concrete, steel and timber
Fritz Deufel Ingenieurgesellschaft mbH
Deizisau (Headquarters)New on Amplifa
About us
Fritz Deufel Ingenieurgesellschaft mbH (FDI) is an engineering consultancy for structural design, founded in 1968 and operating worldwide, headquartered in Deizisau near Stuttgart. With 25 employees, the company plans and implements key load-bearing structures for reinforced concrete buildings, steel structures and timber constructions. The range of services covers structural design for building and industrial construction, object and structural design of civil engineering structures, integrated design of industrial buildings, BIM, cost consulting, construction in existing buildings, structural refurbishment, fire protection verification as well as building physics consulting, tendering, construction supervision and construction acceptance. Reference projects range from concrete wind tunnels for BMW to residential towers, airports, research laboratories and railway bridges, through to shopping centers and stadiums; the firm has helped shape the Stuttgart skyline. International projects have been implemented, among others, in Kuwait, Saudi Arabia, China, Russia, Brazil and Spain.
- Site
- Deizisau
- Processes
- Structural design for building and industrial construction, Object and structural design of civil engineering structures, Integrated design of industrial buildings, BIM Building Information Modeling, Cost consulting, Construction in existing buildings / structural refurbishment, Fire protection verification / building physics consulting, Tendering, construction supervision, construction acceptance
- Materials
- Reinforced concrete, Steel, Concrete (concrete wind tunnels), Timber
- Certificates
- ISO 9001
- Founded
- 1968
- Employees
- 25
- Industries
- Building construction, Industrial construction, Civil engineering, Structural refurbishment, Special construction
- 01
Clarifying the task
- 02
Design and structural analysis
- 03
Cost calculation and building physics consulting
- 04
Tendering
- 05
Construction supervision and quality assurance
- 06
Construction acceptance and settlement
Construction methods and materials
Reinforced concrete
Load-bearing structures for building, industrial and civil engineering structures, including concrete wind tunnels and residential towers.
Steel
Design of steel structures and steel load-bearing structures for industrial buildings and civil engineering works.
Timber
Design and implementation of timber constructions.
Locations

Deizisau
DEHeadquarters and engineering office
- Materials
- Reinforced concrete, steel, timber
- CAD
- FEM analysis
- BIM technology
Projects







Inside the production






Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Structural design for building and industrial constructionEngineering | – | – | – | – | Reinforced concrete, Steel, Timber |
| Object and structural design of civil engineering structuresEngineering | – | – | – | – | Reinforced concrete, Steel, Timber |
| Integrated design of industrial buildingsEngineering | – | – | – | – | – |
| BIM Building Information ModelingEngineering | – | – | – | – | – |
| Cost consultingEngineering | – | – | – | – | – |
| Construction in existing buildings / structural refurbishmentEngineering | – | – | – | – | – |
| Fire protection verification / building physics consultingEngineering | – | – | – | – | – |
| Tendering, construction supervision, construction acceptanceEngineering | – | – | – | – | – |
Additional services
Reference customers
Quality
Projects are personally accompanied through all planning phases, with precise quantity determination, consistent cost monitoring and quality assurance through to construction acceptance.
| Evidence | Deizisau |
|---|---|
| ISO 9001 |
History
- 1968
Fritz Deufel founds the engineering office for structural analysis in Deizisau near Stuttgart.
- 1969
The young company employs 4 engineers.
- 1972
The office becomes a training company for architectural draftsmen.
- 1990
Andre Bittner joins the Deufel engineering office.
- 1991
First use of CAD as part of a major project.
- 1993
Michael Hartmann joins the Deufel engineering office.
- 1994
First three-dimensional FEM analysis during the design of a high-rise building in Moscow; conversion into Fritz Deufel Ingenieurgesellschaft mbH and relocation with 20 employees to a purpose-built new company building in Deizisau.
- 2003
Tilo Deufel joins FDI.
- 2004
Andre Bittner and Michael Hartmann become managing partners; design of the interlocking concrete wind tunnels for BMW.
- 2005
Michael Schätzle joins FDI.
- 2008
Tilo Deufel becomes a partner.
- 2011
FDI becomes a user of BIM technology.
- 2013
The office employs 25 staff from 4 nations.
- 2015
Fritz Deufel hands over the management; Tilo Deufel becomes 3rd managing partner; design of Stuttgart's tallest residential building at 78 m.
- 2016
Michael Schätzle becomes authorized signatory and partner.
- 2018
50 years of IG Deufel – anniversary celebration in the Kelter in Deizisau.
- 2019
Michael Schätzle becomes 4th managing partner.
- 2025
Company founder Fritz Deufel dies on 20.07.2025.