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. Permit-free, structural engineer approved, contractor could start immediately.
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 intervention is entirely internal and the external shell remains untouched, no building permit was required. 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The load-bearing wall has been replaced by a slender HEA 200 steel beam.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 contractor carried out the demolition work and beam installation in 1 day. No permit required, no aesthetic review. The structural engineer signed off on the calculation.
Key project details
What we delivered
A permit-ready drawing for a structural opening starts at Tekenpunt from €595. The exact price depends on the scope and complexity; you receive a fixed price upfront with no additional billing. 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 deliver the construction drawing within 0-3 weeks, or 0-2 weeks on an urgent basis. The permit procedure itself takes eight weeks for a standard application (Environment Act).
Whether you live in Rotterdam, the Randstad or elsewhere in the Netherlands: we handle design and structural calculation from A to Z. Since 2016, 800+ projects. A no-obligation quote within 1 working day.