"Where the Japanese office of Kisho Kurokawa still had steel in mind, Hans van Heeswijk architecten and Octatube envisioned the structure of the Van Gogh Museum's new entrance building to be largely made of glass. The result: an unprecedented transparency pushing the boundaries of glass construction."
"The greatest spectacle takes place above ground being the glass building. It is supported by a steel structure of only a couple of round tubes with a diameter of 406 millimeters. The still structure is aligned with the double curved perimeter of of the glass at a distance of approximately 1 meter from the facade and the roof. This provides a lot of transparency. The tubular steel columns are moment fixed at both the basement and the ground floor level. There is no bracing in the entire steel and glass structure. This was possible because the glass roof is providing stiffness, and the wind loads are transferred via the bent tubular steel structure to the existing Kurokawa wing. Hereby it is the largest glass structure in the Netherlands in which glass fins (beams and mullions) and double glass units, are activated elements of the building's main load bearing structure. Octatube has calculated and realised the steel and glass structures."
source: Bouwwereld, October 2015