If demonstrating compliance via measurements, take measurements of STC ratings and HVAC background noise levels according the relevant ANSI standard section. 

Keep all calculations and STC ratings on file for easy accessibility if detailed calculations are required during project review. 

Install acoustic materials according to manufacturers’ recommendations in order to ensure optimum performance. 

The contractor coordinates with subcontractors to ensure that construction practices adequately address the acoustics design. 

Involve contractors in an acoustics discussion before construction begins to help them understand the importance of specific designs and drawing details. 

Document compliance with the required STC rating for adjacent spaces, with specifics depending on your compliance method:

If demonstrating compliance through measurement, defer your credit submittal until after construction. 

Document HVAC background-noise compliance on LEED Online, with specifics depending on your compliance method: 

Projects performing calculations based on 2007 HVAC Applications ASHRAE Handbook – Chapter 47 will need to provide a summary report from the calculations or simulation confirming 40 dBA or less.
Projects following the ANSI standard methodology will need to write a narrative of the design strategies used to ensure compliance with the standard and meeting the 40dBA requirement.

Include detailed drawings of the wall, ceiling, and floor assemblies. This ensures that the constructed assembly performs as intended. 

Ensure that all acoustical considerations are included on project drawings and specifications.