Clearly there's a HUGE dif between an interstitial space above a drop ceiling and below the deck above, and the vision you made me remember of an animal research lab at Merck with 15' high interstitial spaces with grated floors throughout. In that one, sprinklers were installed in the noncombustible concealed space because with the doorways accessing the grated platform, it was no longer concealed.
Another point to consider when dealing with pharmaceuticals, clean rooms, bio and nanotechnologies, is the dollar values involved (or business interruption) may cause an Owner or insurance carrier to ask for sprinkler protection beyond that required by minimum consensus standards. George Church Rowe Sprinkler Systems, Inc. PO Box 407, Middleburg, PA 17842 877-324-ROWE 570-837-6335 fax [email protected] -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Monday, March 07, 2011 2:11 PM To: [email protected] Subject: Re: Interstitial Space For many industrial projects, especial biotech and microelectronics, interstitial space is commonly used to describe the space between floors - especially where the spaces are tall enough to accommodate personnel. I am now gun shy enough to where I plan full automatic sprinkler protection throughout interstitial spaces. We once got burned where the local AHJ's signed off in writing that the interstitial spaces did not have to be sprinklered only to be told a year later that they would require protection based on a new evaluation by a code consultant. We had been told that minimal plastic drain pipe and fire resistant cable was acceptable. If the interstitial "floor" is a walkable ceiling, you will more than likely lose the battle even if the space is non-combustible and has non-combustible contents because the argument will be that storage would be possible. Regards, Jim James L (Jim) Roberts, PE/SET |FLUOR|Central Operations| [email protected]|IODC 20.5149 |864.281.5149| www.fluor.com From: Todd Williams <[email protected]> To: [email protected] Date: 03/07/2011 01:49 PM Subject: Re: Interstitial Space Sent by: [email protected] Interstitial and concealed can be assumed synonymous in our situation. Interstitial tends to apply more to things like spaces between walls. At 01:46 PM 3/7/2011, you wrote: >Is the space combustible? >On Mar 7, 2011 12:39 PM, "Martin, Matthew" <[email protected]> >wrote: > > Can anyone tell me what the NFPA says about the requirements of sprinklers >in the interstitial space. What is the definition of " Interstitial Space"? > > Also where in the NFPA is the term Interstitial Space used. > > We have an Architect who says that a fully sprinklered building includes >sprinklers in all the interstitial spaces. > > > > Thanks in advance, > > > > > > > > Matthew Martin > > CQC Manager > > Suffolk Construction Company, Inc. > > Direct: 323-781-1778 > > Cell: 949-892-7419 > > > > www.suffolkconstruction.com > > > > Please consider the environment before printing this e-mail > > _______________________________________________ > > 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) Todd G. Williams, PE Fire Protection Design/Consulting Stonington, CT 860.535.2080 www.fpdc.com _______________________________________________ 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) ------------------------------------------------------------ The information transmitted is intended only for the person or entity to which it is addressed and may contain proprietary, business-confidential and/or privileged material. If you are not the intended recipient of this message you are hereby notified that any use, review, retransmission, dissemination, distribution, reproduction or any action taken in reliance upon this message is prohibited. If you received this in error, please contact the sender and delete the material from any computer. 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