What are the minimum requirements for sound transmission in multi-family units?

The minimum requirements for sound transmission in multi-family units focus on occupant comfort and privacy, which is why the correct choice emphasizes the necessity of construction materials that are effective in reducing noise between units. Multi-family dwellings often house individuals or families in close proximity to one another, and without proper sound attenuation, everyday activities can disturb neighbors, leading to discomfort and dissatisfaction.

Adequate construction materials—like sound-rated drywall, insulation, and acoustic seals—are critical in achieving sound transmission class (STC) ratings that meet building code requirements for noise reduction. This ensures that sounds from one unit do not easily transfer to another, thereby enhancing the living experience for all residents. These standards promote a peaceful atmosphere and respect the privacy of occupants.

In contrast, options that suggest large openings between units or minimal soundproofing, such as only focusing on bathrooms, do not align with the goals of noise control in living spaces. Additionally, while sharing common walls is typical in multi-family structures, it does not directly address sound transmission requirements. Instead, it is the quality of the construction materials that plays a pivotal role in controlling sound, making it essential for meeting the standards in multi-family residential buildings.