Which wall assembly specification meets the owner’s minimum requirement of 57 STC?

To determine which wall assembly specification meets the owner's minimum requirement of 57 Sound Transmission Class (STC), it's important to understand that STC ratings measure how well a building element attenuates airborne sound, with higher ratings indicating better sound insulation performance. In this scenario, UL484 is the specification likely involved in a wall assembly with the necessary STC rating.

UL specifications are standards developed by Underwriters Laboratories, which provide classifications for various products and assemblies, including their acoustic performance. UL484 is recognized for assemblies that achieve higher STC ratings, making it suitable for applications requiring superior noise control.

Selecting the correct assembly specification ensures compliance with the owner's requirements, promoting optimal acoustic comfort in the space. If UL484 is confirmed to provide an STC of at least 57, it adequately meets the needs of the owner while other specifications may not fulfill this particular acoustic performance requirement.