Which brings me to my next question. If the valence against the wall was 5 feet below the sprinkler deflector, instead of 20", would that be treated differently? This situation can arise in a retail store having a 26" wide shelf against a wall. Would that be "obstruction against a wall" or obstruction more than 18" below sprinkler deflector?
Tony -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Garth W. Warren Sent: June 3, 2008 7:27 AM To: [email protected] Subject: Re: Obstruction "Obstructions located against the wall and that are not over 30 in. (762 mm) in width shall be permitted to be protected in accordance with Figure 8.6.5.1.2(b)." If you can not make it work with this then it should be sprinklered below. The fact that it is an L shape rather than a solid cube has no bearing on whether the area below is protected. If this valance is not continuously connected to the wall then it should be able to be treated as any other obstruction less than 4' wide. Garth ----- Original Message ----- From: "Dewayne Martinez" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Tuesday, June 03, 2008 7:43 AM Subject: RE: Obstruction I think this would fall into "obstructions to sprinkler discharge more than 18" below the sprinkler deflector" category. IE: no sprinklers unless over 4ft wide. Dewayne -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of A.P.Silva Sent: Tuesday, June 03, 2008 1:15 AM To: [email protected] Subject: RE: Obstruction Re-posting my previous question, somewhat re-phrased. If a wall had a valence or shelf 20" below a sprinkler head, is it a potential obstruction, as per 13? Tony ________ _______________I____ I I I I sprinkler I I 20" I I I I____________ I I I ____________I I I I I<---26------> I I I I I I I I I I -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of A.P.Silva Sent: June 2, 2008 1:01 PM To: [email protected] Subject: Obstruction Shopping mall with CRU's on one side and mall corridor on the other. At the lease line there is an "L" shaped valence that drops 20 inches (vertical, at the lease line)from the ceiling and runs 26 inches (horizontal) towards the corridor. Typically there is no wall between the CRU's and the mall. Is this valence an obstruction to the sprinklers at the high ceiling level? My first solution was to space the sprinklers on both sides of the valence (CRU side and mall side), so that they cover up to the centre-line of the 26 inch wide valence. However, the sprinklers on the CRU side will change for tenant renovations, and the mall owner will not be able to enforce the tenant to provide coverage beyond the lease line. Hence, the sprinkler in the corridor side has to cover up to the lease line. Are the sprinklers in the corridor unobstructed due to the valence being more than 18 inches below the sprinkler deflector, or is the valence an obstruction, and possibly requiring sprinklers below the valence? Tony concealed sprinkler _______ __________________I_______ceiling I I I I I I <-6"-> I I 20" I I I I_____________ I I I_________________I <------ 26 -------> I<--- lease line CRU's Mall corridor _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field)
