The model and design workspace is a room with two different purposes: Teaching classes and building models.

In order to assess the auditorial quality of the room I started with the reverb-time calculation.

Since there are really only hard surfaces in the room, the reverb times are very high, exceeding the limits for an A4-Room by a large margin. I choose A4 because the requirements are quite similar and there anyway is a lot, that has to be done, so going the extra mile is not that much of an impact.

In order to address the issue of the reverb time, I started to put 100mm fiberglass boards in the back of the room (Ceiling and all walls). It makes sense to put them here, because you don’t want any sound to come back from there in a lecture situation and it provides good support in the main model building area. I choose 100mm because the RT had to be dropped significantly across all frequencies. In total I added 52.5 m2.

This brought me much closer to the target, however the high and mid frequencies still needed some improvement. I therefore choose 50mm fiberglass boards, since the very low frequencies are already dealt with sufficiently. I placed additional 20m2 of the 50mm boards along the sides. This is the next logical place to put them, because you still have the floor and the ceiling to reflect sound in a lecture-situation. The room is also rather small so that the direct sound is mostly sufficient for lecture purposes and a higher reverb time would be much more disturbing, then the drop in sound level.