<div dir="ltr"> <div class="gmail_quote">On Mon, Sep 22, 2008 at 4:45 PM, joel a. jones <<a href="mailto:jajones2@wisc.edu">jajones2@wisc.edu</a>> wrote: <blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">Tim & Alan, During the remodeling of our concert hall it was discovered that only one of the four main inlets was working.   The other three were not connected, therefore forcing all the air into a small pipe.   After they were all made to function and the air supply balanced the hall was amazingly & acoustically pleasant. I have no idea if this is the problem with your facility, but I listen in rooms with forced air to take note of the sound and the amount of air movement. Take your HVAC engineer to lunch and ask about the system.  We toured the air handlers looking at the humidity system and the dirt in the filters.  Soon after that our engineer found a piece of wire in the ducts that had been causing an annoying  rattle in our small recital hall since 1970.  Since the building was constructed this tapping would come and go without any set pattern. Show how important it is to have a quiet  environment for music. Find the guy with the screw driver has been, and continues to be, my mantra. Joel Joel Jones, RPT Madison, WI <div> <div></div> <div class="Wj3C7c"> On Sep 22, 2008, at 1:42 PM, Alan McCoy wrote: <blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">Tim, I think most HVAC systems are designed for minimum air changes per hour (or some such target) as dictated by state regulations. How that affects the uses the room is put to probably does not enter the equation. Hence our continuing battle. The HVAC system in our recital hall has to be shut off for each performance because it is so loud. Then of course the room becomes unbearably hot for performers and audience. Fun! Alan -- Alan McCoy, RPT Eastern Washington University <a href="mailto:amccoy@mail.ewu.edu" target="_blank">amccoy@mail.ewu.edu</a> 509-359-4627 509-999-9512 <blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">From: Tim Coates <<a href="mailto:tcoates1@sio.midco.net" target="_blank">tcoates1@sio.midco.net</a>> Reply-To: "College and University Technicians <<a href="mailto:caut@ptg.org" target="_blank">caut@ptg.org</a>>" <<a href="mailto:caut@ptg.org" target="_blank">caut@ptg.org</a>> Date: Wed, 17 Sep 2008 21:48:46 -0500 To: "College and University Technicians <<a href="mailto:caut@ptg.org" target="_blank">caut@ptg.org</a>>" <<a href="mailto:caut@ptg.org" target="_blank">caut@ptg.org</a>> Subject: [CAUT] Heating system volume level I have looked over the CAUT website concerning heating/cooling for a building.  I don't see it addressing the volume aspect of heating/ cooling.  I am looking for information concerning the acceptable volume level of units within a room.  Is there such information?  I have my own opinions, and I hope others on this list have their opinions.  My opinion is that heating/cooling units within the room that create low frequencies make that room a poor choice as a music room.   I am also of the opinion that there seems to be a point when the overall volume of a heating/cooling unit exceeds a certain level the room becomes unacceptable as a music room.  I don't know what that point is.  Does anyone? Thoughts? Tim Coates </blockquote> </blockquote>Joel you make a point I've been pointing out for years, befriend the guys with all of the keys, the "janitors, system engineers" </div></div></blockquote> </div> <div>etc. and make your point to and with them, they know where the access is to these things and many times don't have to go through miles of red tape to accomplish it.</div> <div> </div> <div>Mike -- I feel sorry for the person who can't get genuinely excited about his work. Not only will he never be satisfied, but he will never achieve anything worthwhile. Walter Chrysler Michael Magness Magness Piano Service 608-786-4404 <a href="http://www.IFixPianos.com">www.IFixPianos.com</a> email <a href="mailto:mike@ifixpianos.com">mike@ifixpianos.com</a> </div></div>