Apr 29, 2002 #1 Ears Civil/Environmental Joined Jan 28, 2002 Messages 1 Location IE How are DnTw ratings measured between semi-detached houses. Can someone tell me some detailed information on the exact procedure for doing this, and also what is the minimum equipment required.
How are DnTw ratings measured between semi-detached houses. Can someone tell me some detailed information on the exact procedure for doing this, and also what is the minimum equipment required.