Because the large basement was very low and the ground floor very high, we raised a timber floor on Monseigneur van de Weteringstraat in Utrecht. We paid extra attention to resisting possible horizontal forces, installing temporary horizontal propping before an arched structure was demolished. To create two habitable spaces, it was essential to keep the structural depth to a minimum. The main measure was to rotate the layout by a quarter turn, so the spans became shorter. High-performance materials were also used, which delays lateral-torsional buckling.
