What is the reason of maximum coverage area protected by one sprinkler system?

Hi! I don't know the reason of of limiting coverage area protected by one sprinkler system. For example why should I determine maximum 52,000 sq.ft for one sprinkler system in an ordinary hazard area? imagine a 125,000 sq.ft factory which is an Ordinary Hazard Group II occupancy with a

RE: What is the reason of maximum coverage area protected by onesprinkler system?

The British Standard allowed 1000 heads regardless of area or height. Many items of the codes are many years old. Nobody questions them. Let me offer one probable cause. If a sprinkler is knocked of, the whole system is off until the sprinkler is replaced. It takes more time to drain the

RE: What is the reason of maximum coverage area protected by onesprinkler system?

George, Thanks for your prompt reply, thanks Dan too. Sorry I forgot to search the forum, before posting my question, I will search next times before posting, thanks for reminding. Reza George Church [EMAIL PROTECTED] wrote: There's been some priot threads on this topic related to # of

Re: What is the reason of maximum coverage area protected by one sprinkler system?

The exact numbers (40,000 and 50,000 sq.ft.) come from 400 sprinklers at either EH (100 sq.ft.) or OH(130 sq.ft.) spacing. This has been around for many,many years and is a somewhat arbitrary number. It was done to reduce the area affected during a sprinkler impairment and also to allow a

FW: Another article with wrong inormation

-Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Saturday, September 15, 2007 7:46 AM To: Thomas Reinhardt Subject: http://www.ocolly.com/2007/09/11/roll-out-the-bucket-brigade/ ___ Sprinklerforum mailing list

RE: What is the reason of maximum coverage area protected by onesprinkler system?

There was a proposal submitted to the committee during the last open cycle (2007 edition) where the submitter recommended changing the 52,000 sqft limitation to 150,000 sqft. The proposal noted that 3 floors of 50,000 sqft each, with one control valve in permitted now - so why not permit the

RE: Bucket Test

I have a copy of the NFPA 13R ROP but I am having problems posting it to the group. Email me off forum [EMAIL PROTECTED] if you want a copy. Pete -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Ryan Peterson Sent: Thursday, September 13, 2007 1:32 PM To:

Re: What is the reason of maximum coverage area protected by onesprinkler system?

Reza, Whether or not shutting down George's 500,000 sqft system is good practice or not was not a part of your question. 52,000 has been the number for ordinary hazard and 40,000 for extra hazard. Light hazard is a johnny come lately and when it came along logic would dictate that the maximum be

BUSHINGS

If you know Please tell me the intent of the 6.4.6 limiting the use of bushings to reduce pipe sizes. If there are existing ¾ reducers and ½ sprinklers are needed, what detrimental effect would there be in using a ¾ x ½ bushing? I fail to see the potential negative impact.

Re: BUSHINGS

From the NFPA 13 Handbook - The intent of 6.4.6.1 prohibits the use of bushings where a one-piece reducing fitting is commercially available at the time the system is installed. For other than the circumstance cited in 8.14.19.2, in which bushings are temporarily installed to facilitate an

RE: BUSHINGS

As I have mentioned before on this forum... We have a severe shortage of local AHJ's here who can read between the lines. It is either taken literally or ignored. In this case there are 3/4 inch slip x thread adaptors installed for head adaptors and a bushing could not protrude above the brass

Spare Head boxes

Does anyone know of a spare head box that can stand up to a corrosive environment? Standard head boxes that are available as a standard do not do well against direct exposure to the elements. Any help/advice is appreciated Pete Schwab Wayne Automatic Fire Sprinklers, Inc. 2006 Inductee into The

13D site plan?

We are in the process of designing a 13D system for a house that uses a well for water supply. We are using a pump/tank set up and no float valve for the tank connection to the well. Since this is a stand alone system and no connection to a water supply, is a site plan required? I can't find

RE: Spare Head boxes

Plastic box with the heads put it in - like a tackle box without the tray? Get it in red, then just add a label indicating it's spare heads. glc -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Pete Schwab Sent: Monday, September 17, 2007 11:39 AM To:

RE: BUSHINGS

Actually, the 2007 edition of the standard was changed slightly in this regard. Please see the following sections. 6.4.6 Reducers and Bushings. 6.4.6.1 Unless the requirements of 6.4.6.2 or 6.4.6.3 are met, a one-piece reducing fitting shall be used wherever a change is made in the size of

Re: What is the reason of maximum coverage area protected by onesprinkler system? THANKS!

Thanks to my dears George, Joe, Ed, Ron, Bob, Dan special thanks to Travis who is helping me more than I deserve! I completely got the reason for this limitation. Thanks to all, Reza I LOVE THIS FORUM! Ron Greenman [EMAIL PROTECTED] wrote: Reza, Whether or not shutting down

health and fitness clubs

A health club with weights, spinning, sauna, raquetball, etc. is this A-3 per 2003 IBC? is it Assembly per 2006 NFPA? seems to be. just making sure we are not denying a B-occupancy where others commonly assign B-occupany to health and fitness clubs. scot deal excelsior fire engineering

RE: health and fitness clubs

We've done the last two health clubs as A-3. Your mileage may vary. Jim Kettler Buckingham Twp. FMO -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of å... Sent: Monday, September 17, 2007 2:30 PM To: SprinklerFORUM@firesprinkler.org Subject:

RE: health and fitness clubs

Whats the occupant load ?. John Drucker -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of å... Sent: Monday, September 17, 2007 2:30 PM To: SprinklerFORUM@firesprinkler.org Subject: health and fitness clubs A health club with weights, spinning,

Re: health and fitness clubs

One aspect is that there is a magical trigger value of 50 before an Assembly occupancy is assigned. Roland On Sep 17, 2007, at 11:48 AM, John Drucker wrote: Whats the occupant load ?. John Drucker -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of

RE: health and fitness clubs

Bingo, That's why I asked. 2003 IBC Section 303 Assembly Group A 303.1.1 Nonaccessory Assembly Use, by less than 50 Persons shall be considered a B Occupancy. John Drucker -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Roland Huggins Sent:

RE: Spare Head boxes

There was one of the after market providers that used to have a plastic sprinkler head box. ARCO or FPPI ?? Mike Brown -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Pete Schwab Sent: Monday, September 17, 2007 11:39 AM To: