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INTERPRETATION BOOTH WALLS

On the one hand, longitudinal walls follow the “ellipses” defining The method for the real size plan set to the ground is also used
the hall’s plan (in fact, they are “false” ellipses parallel to the “real” to draw the free edge of the suspended ceiling partly covering
ellipse materialised by the column alignment) and, on the other the corridor between the back of the booths. The drawing is
hand, the partitions perpendicular to these “ellipses”, not parallel laser-reproduced from the ground to the suspended ceiling, thus
between themselves, mark the limits of the interpretation booths. producing a very precise cutting.

The geometry is rather complex but presents no particular An extra difficulty lies in the fact that all walls are equipped with
difficulty with current drawing software. Yet, the absence of very thick (40 mm in 4 layers) and heavy (100 kg/m2) soundproof
straight lines sometimes makes reproducing lines on concrete glass, installed edge to edge and without vertical frames, therefore
slabs difficult. In practice, the executing surveyor carefully they must be separated from the upper slab to prevent the vertical
reproduced both ellipse axes on the slabs and the structure is spreading of noise, whilst resisting horizontal efforts resulting
set up in reference to that source. Next, in order to set up booth from air pressure differences between the room and the booths. A
separations, the surveyor defines secondary landmarks, wisely metallic structure was integrated into the partitions and supports
placed and which will be used to insert two guiding elements into glasses, thus allowing for a flexible link to the upper slab.
the slab:
– on the edge of slabs, wooden multiplex panels are used as a
basis for the glass wall and cut according to the architect’s plan
with a computer numerically controled machine also indicating
positioning marks for the partitions to be placed between the
booth;
– behind the booths, the separating plan is printed in real size on
long paper slips, placed on the ground. Then, the separation is
simply placed over the plan and the working site routine gets rid
of the extra paper.

The metal structure integrated into the partition walls and supporting the weight
of the sound-proofed windows.

From the “true” ellipse of the basic structure to the “false” ellipse formed by the windows of the interpreters’ booths.