About us

Eef Siemelink

Eef Siemelink studied civil engineering in Delft. After working in Austria as a self-employed structural engineer under the name Everts Engineering, Eef Siemelink founded Firma Siemelink in Delft, which later moved to the more centrally located city of Utrecht. 

In 2014, Firma Siemelink adopted the trade name ‘De VerbouwingsConstructeur’.

Structural checker for building structures

For the municipality of Delft, Eef Siemelink checked submitted building structures for structural safety.

Association of Timber Structural Engineers (Vereniging voor Houtconstructeurs)

This association discusses projects and new developments in timber construction. Eef Siemelink regularly attends its meetings at the Jaarbeurs.

Steel Construction Association (Bouwen met Staal)

This association discusses projects and new developments in steel construction. Eef Siemelink regularly attends its meetings.

Solar Power Plant Association (ZonneKrachtcentrales)

Eef Siemelink is a member of this association’s technical committee (see www.zonnekrachtcentrales.nl). He is researching the optimal support for large parabolic troughs. Having already done similar calculations for LNG storage tanks, he can put that experience to good use for solar power plants, which could make these supports considerably lighter in future. For this contribution, Eef Siemelink received the encouragement award at the sixth Groene Bilderdijk conference.

TU Delft alumnus

As an alumnus, Eef Siemelink receives monthly updates on technical developments at TU Delft. This enabled him, through Utrecht local politics, to get a new space-saving wastewater treatment plant built in Utrecht. The space it freed up is now used for around 100 homes.

Project management through the Oud Proteus-Eretes business club

Through this association, Eef Siemelink keeps in touch with former Delft rowers who are also self-employed. For one of these contacts, Paul Hamm, Eef Siemelink was project manager for the construction of a cold store.

Wim van Oudheusden

Van Oudheusden is an architect. He also holds a civil engineering diploma from a Dutch technical college (HTS). He can survey buildings quickly. Together with Eef Siemelink, he developed plans for the municipality of Alphen aan den Rijn to convert a former military complex to house municipal services. Van Oudheusden works on a freelance basis.

Lecturing at a university of applied sciences

Eef Siemelink taught mechanics and concrete, steel and timber structures; Van Oudheusden taught management.

References

Private clients

Kim van Oudenaarde  06 533 561 32

Gerrd van Lier 0493 320 693

Bob Temming (2 houses) 06 513 47 859

Jeroen Aben 06 231 727 66

Architects

Kees van Loenen 030 25 138 36

Rento Hermans 06 27285797

Gea van der Horst 06 115 136 92

Contractors

Maarten Groenendijk 06 150 050 48

Construction insurance

Arag, Mr Scholten 033 434 22 62

Industry

Boele BV Lennart Struik 0184 691 522

Rhino Engineering Nick Samson 030 2000155

Eurocodes and building physics

Jarold ter Meer 06 126 49 63