Sounds like the room is about 720 sf. Typical airflow for this space would be in the range of 1500 cfm. One 2x4 eggcrate grille can handle in excess of 2500 cfm. Not sure why the room needs 16 panels. Could be an acoustical treatment? Seems like an odd way to improve acoustics if that is what the purpose is. Suggest reducing the number of panels to amount required for return air. If panels are required for acoustics, coverage above the ceiling is probably required.
Kevin D. Schaefer PE LEED(r)AP Managing Principal 40 Beaver Street Albany, New York 12207 p: 518.463.8068 x269 f: 518.463.8069 www.csarchpc.com -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of GAYLE KNOWLES Sent: Wednesday, June 01, 2011 5:11 PM To: sprinklerforum Subject: RE: openings in ceiling grid This is a brand new high school. We are sending thru an RFI to find out what these panels are for. they are scattered throughout the room with no apparent pattern. Will let you know. Thanks Gayle Knowles, SET Project Manager Kaufman Fire Protection Systems. Inc. PH:505-884-2447 > From: [email protected] > To: [email protected] > Subject: RE: openings in ceiling grid > Date: Wed, 1 Jun 2011 14:50:44 -0600 > > 16 seems excessive for Return Air, It might be for supply, to keep ambient > noise down, by using very low velocity from the "Plenum above the ceiling, > but if this is an existing classroom, the chance is more likely that these > "Egg Crate" panels were what they had on hand, when the solid panels got wet > or were broken at some point. If you can find the original HVAC drawings > they should tell you what was original design. (An 800 SF classroom would > normally only have about 4 panels for return air.) > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of GAYLE KNOWLES > Sent: Wednesday, June 01, 2011 2:27 PM > To: sprinklerforum > Subject: RE: openings in ceiling grid > > > the room is a high school music room with 90 2X4 ceiling panels and only 16 > of them are > eggcrate panels. The 16 eggcrate 2X4 panels have a 40% opening per panel. > We have > pendants protecting the room but Fire Marshall thinks we need uprights. > > Gayle Knowles, SET > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > > For Technical Assistance, send an email to: [email protected] > > To Unsubscribe, send an email to:[email protected] > (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field)
