The idea is to be permanently aware of the gasholder on both the interior and exterior, and that all additions be recognised automatically as "aliens"which, figuratively speaking, could be "picked up and taken away".The openings which allow access and daylight into the gasholder reinforce that idea. The confrontation between the enclosing shape, the functional work spaces and the steel floor construction brings a lively suspense to the building. The openings on the outside are created by removing steel panels. Where the panels are removed, they are replaced by curved glass panels for light and views, and the entrance there is one large straight glass facade. The confrontation between the round gasholder and the straight entrance facade creates a transition which draws the visitor and user in and at that point grants him or her a view of what previously always been visible - the interior of the gasholder. Inside the curvature remains visible thanks to the voids past steel struicture on the upper floor. The space between floor and curved exterior wall shows a flowing interplay of daylight. The enclosed character of the ordinal gasholder is tangible and visible everywhere. The steel floor structure with all the required facilities underneath it and on top of it can be seen as an autonomous addition and is designed in the same sober and industrial style as the gasholder.
On the ground floor the interior offers reception space, space for meetings and presentations, 5 workstations, an archive, 2 toilets and and a kitchenette. These latter functions are contained in a freestanding structure which creates a more or less natural partition between reception areas and the work areas. This structure has been kept detached from the upper floor in order to maintain as much of the visibility and sense of space of the circular gasholder as possible.
On the upper floor there is room for 10 workstations, archive, plotter and copier room. The upper floor is reached by means of one staircase. The first part of the staircase is rooted firmly on the ground and acts as a source of illumination thanks to the light that is produced below it and which is encased in silver plastic panels. The second part of the staircase "floats". It hangs off the steel floor structure and thus confirms its autonomy once again. Along the curved walls stand curved bookcases in which archive material and documents are stored. This solution is highly practical, but also solves an important acoustical problem. In a round building the noise will go "round" unless it is adequately absorbed and scattered. 8 skylights have been created in the roof.