Roland, Can you send the 6 sq. ft. information that Thom is referring to, please?
Scott (763) 425-1001 Office (612) 759-5556 Cell -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Thom McMahon Sent: Monday, April 30, 2007 12:35 PM To: [email protected] Subject: Re: How Much Dry Floor Area? Bill: 2007 discusses the shadow area and I think the area allowed for Res. is 6 SF, if you attended Roland's and Chris's presentation on the 2007 standards at convention last Sept. this was in the notes. New Question: Residential 13 occupancy. With residential heads this is a 4 head design, however I have had an AHJ say that even if you use QR in a Residential occupancy that it stay's a 4 head design. I've always used room design or area density in residential occupancy's for which we had to use QR heads for some reason. Have I been wrong all these years? Example: Needed to run a dry attic location to feed QR dry Pend. in residential occupancy. 10 foot ceilings we use 900 Sf and increase by 30% for dry. He say's that we only needed to calc 4 heads, and uses NFPA 13, 1996 Fig. A-5.3.2.2 "Examples of design areas for dwelling units." Shows 4 heads different configurations. Any thoughts? Thom McMahon Firetech, Inc. 2560 Copper Ridge Dr Steamboat Springs, CO 80488-2136 Tel: 970-879-7952 Fax: 970-879-7926 ----- Original Message ----- From: "Brooks, Bill" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Monday, April 30, 2007 9:30 AM Subject: How Much Dry Floor Area? > Another obstruction question related to residential sprinklers. > > Figure 8.10.7.2.1.4 (2002) shows a sprinkler obstructed by a column. > Assume > a 16' x 16' coverage area from a sidewall residential sprinkler and a 12" > x > 12" column located 4' from the face of the column. I calculate a 29 sq ft > shadow area behind the column. > > Is this a correct interpretation of the Figure? If so, is it possible to > shift this shadow area to another part of the room to show equivalent > protection? Is it appropriate to have 11% obstructed area in a 16' x 16' > room? > > Since I'm on the subject of obstructions, what method should be used to > cover bunk beds? Is furniture excluded? Bunk beds were last mentioned > here > in October 2002 but not with respect to the obstruction hazard. > > Bill Brooks > Pittsburgh, PA > _______________________________________________ > 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)
