NCIDQ IDFX Practice Exam

Which planning concept can help reduce noise transmission between areas?

1. Placing similar use areas far apart

2. Using buffer spaces such as closets

3. Maximizing the number of openings

4. Creating open layouts without partitions

The correct answer is: Using buffer spaces such as closets

Using buffer spaces such as closets is an effective planning concept for reducing noise transmission between areas. Buffer spaces act as a barrier that absorbs and diminishes sound, providing a physical separation between noisy and quiet zones. This concept relies on the principle that sound energy dissipates as it encounters obstacles and is absorbed by materials. When buffer spaces like closets are incorporated into a design, they provide a transition space that can help to prevent noise from traveling freely between areas such as bedrooms and living spaces. The materials used in constructing these buffer areas can also contribute to noise reduction, depending on their soundproofing qualities. In contrast, placing similar use areas far apart may not always effectively mitigate noise if they are still close enough to experience sound transmission indirectly. Maximizing the number of openings tends to facilitate the movement of sound, potentially leading to greater noise levels in interconnected spaces. Lastly, creating open layouts without partitions typically increases sound transmission because there are fewer barriers to block or absorb noise.