2003 IBC: Help needed for membrane penetrations of 1/2 hour rated assemblies using the exception to 708.3 & 711.3. 713.3.2 & 712.4.2 have req's for min 1 hour assemblies. What do we do with 1/2 hour assemblies? These 2 sections specifically state what to do with a recessed fixture in a 1 hour assembly (not less than) but what about other membrane penetrations in 1/2 hour assemblies? Reading these sections causes confusion concerning how to protect these penetrations since they are less than 1 hour. Thanks all.