Mass Notification Audibility

[Gategator37]

I have an audibility test of a Mass Notification system coming up. Does anyone know the minimum STI reading that must be reached? This is my first installation and need some information on audibility testing. Does anyone have any good advice?

Thanks

 

[steve66]

I think that's covered in the newest NFPA 72 - Fire Alarm Code

 

[Gategator37]

I finally found it, it is located in Annex D, there is some nice information for testing (Handbook that is).