Boelewerf 22
2987 VD Ridderkerk (Bolnes)
010 48 26 850 -
Finite element specialists

Our company

The engineering company PT Structural Design and Analysis was founded in 1992 by ir. Pieter Pollemans and ir. Gerrit Timmerman. The current line is formed by the two directors, ir. Gerrit Timmerman and ir. Danny Reijs plus ing. Reinout Bergacker, Ing. Fabian Boed,  ing. David van Damme, ing. Jason Fortuin, ing. Dick van Gemerden, ing. Klaas van Gemerden, ing. Ayoub el Haddioui, ir. Marco Oomens, ir. Pieter Pollemans and Kars Timmerman.

PT Structural is specialized in the analysis of complex steel structures by means of the finite element method (FEM). We have extensive experience in the area of ​​general steel structures, marine structures and special structures.

We have been working with Ansys, the standard in the field of finite element calculations, since 1992. At launched version 5.0 during the construction of the Maeslantkering. On computers with less than 1Mb RAM, a 400 MB hard drive (as much as a midsize car). In 2018 is Ansys version 2022 is a fact, and calculations may be performed on a laptop computer. We used the computer software of Nemetschek Scia as well.

Some of our Clients

• IHC Merwede
• Jumbo Shipping
• Ulstein Design & Solutions
• Rijkswaterstaat
• Hollandia
• Allseas
• Huisman Equipment
• GSB Gelders Staalstraal- en Schildersbedrijf
• De Voogt Naval Architects 
• Heerema Marine Contractors
• HSM Steel Structures
• Mammoet
• Jos van den Bersselaar
• Blacon
• Van der Zalm



Our office is in the centre of our clients, easily accessible from the A16 and the A15, on the south side of the Nieuwe Maas/Lek in Ridderkerk-Bolnes in the neighbourhoud of Rotterdam, Boelewerf 22, Ridderkerk.

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