A stairwell flat in Rotterdam-Noord had the partition between kitchen and living room removed. We handled the structural calculation for the steel beam replacing the load-bearing wall, and the permit for the technical building activity. Structural engineer approved, permit granted.
Illustrative blueprint view · situation before, sketch with steel beam, 3D impression and the delivered result.
The owners of a stairwell flat in Rotterdam-Noord wanted to open up the closed kitchen to the living room. The partition wall turned out to be a load-bearing internal wall supporting the upper floor and the roof. Simply removing it was not an option: the forces had to be transferred to a steel beam spanning the full opening. This required a precise structural calculation for the bearings and the anchoring into the flanking external walls.
We drew the existing and new situation to scale and calculated the HEA 200 beam for bending moment, deflection and support reactions. The bearings were fixed into the load-bearing side walls with a mortar bed and steel plate. Because the load-bearing wall is part of the main load-bearing structure, a permit for the technical building activity was needed; we handled that application, with the structural calculation included. We delivered the drawings and structural calculation as a package for the contractor.
The load-bearing wall has been replaced by a slender HEA 200 steel beam. The property now has a continuous living space from the kitchen to the garden doors. The structural engineer signed off on the calculation and the permit was granted.
Key project details
What we delivered
A permit-ready drawing for a wall opening starts from €599 incl. VAT at Tekenpunt. The exact price depends on the size and complexity; you get a fixed price upfront, with no surprise extras afterwards. Request a no-obligation quote.
That depends on the type of intervention and the rules of the municipality of Rotterdam. We check the aesthetic review policy and the zoning plan in advance, so you know where you stand and your plan typically passes the review in one go.
We plan the construction drawing by arrangement; rush is available for a surcharge. The permit procedure itself takes eight weeks for a regular application (Omgevingswet).
Whether you live in Rotterdam, the Randstad or elsewhere in the Netherlands: we handle design and structural calculation from A to Z. Since 2016, 930 projects. Request a no-obligation quote.