In 1935 the Aalbers en De Waal office received a contract to design an office building for the DENIS Bank (De Eerste Nederlandsch-Indische Spaarkas or the First Dutch-Indies Savings). Aalbers used steel materials for the building structure and concrete floors, but he designed the horizontal side with smooth curves as if the materials were made from plastic. As a point of visual contrast, Aalbers put a lift tower in the middle of the building, higher than the six rounded platforms. This articulation point of vertical tower against the horizontal smoothness provides an impression of disrupting the elasticity.
