Abstract
A construction company decided to build an apartment 10‐story building with very little investment. There, dozens of small flats were built, and it was expected that solid floors were to be installed over most of the living dining and sleeping areas (with only a few carpeting in some bedroom areas); flats were delivered with a concrete flooring of 5 cm below final level, so owners could decide the type of floor. In order to reduce the high sound levels from furniture movement and women shoe steps in the above apartment, which were considered the biggest noise problems, the space between the concrete roof surface and the false ceiling was constructed as a plenum, as there was no other way to reduce those sounds. Some sound results and comments are presented.
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