A recent Multi-Housing News Online article explains the functions and weaknesses of the IIC and STC acoustical rating systems.
The article also recommends three techniques to help a builder or developer meet codes and avoid litigation.
Solving Acoustical Problems in Multifamily Construction
By Eric Miller, Architectural Testing, Inc.
Multi-Housing News Online
September, 19, 2010
Link: http://www.multihousingnews.com/features/solving-acoustical-problems-in-multifamily-construction/