Re: S & L Rule

"In order to form a more perfect thirteen" we play like walls are not there even when they are, and rated no less-- density/area method-- and we play like walls are there when they are not-- as in this and the recent 'saw-tooth type' ceiling discussions. TC members have always kept it

RE: S & L Rule

Larry: I think the original question is asking what is the area of coverage of this setup. You have two lines that are 10' apart with sprinklers 13' on center on the lines. Call these lines A and B. Then in the adjacent bay, you have lines 15' on center with sprinklers 8' on center. Call

RE: S & L Rule

Who said they wouldn't obstruct heat flow? Because they are more than 7.5 ft apart it can be considered to be "unobstructed" construction. But of course they are obstructions. With unobstructed construction the deflector distance has to be 1" to 12" below the ceiling. You can't space the

Re: A fascinating and challenging tort in Connecticut

Going after the individual inspector for an inspection not happening is a different question. I had zero influence on the budget for the organization. Maybe advocating for new flow test equipment. But as far as number of inspectors? No. That’s a city council responsibility. And in my office new

Re: S & L Rule

But Larry, if the beams are not an obstruction to heat flow OR spray pattern, it's like they don't exist, no? Brad. Quoting Larry Keeping : You don't need to do anything special with the deflector distance. As per 8.5.2.1.1 (2), the line spacing is to a wall or

RE: S & L Rule

You don't need to do anything special with the deflector distance. As per 8.5.2.1.1 (2), the line spacing is to a wall or obstruction: (2) Between branch lines as follows: (a) Determine perpendicular distance to the sprinkler on the adjacent branch line (or to a wall or obstruction in the case

Re: S & L Rule

I recently learned that the beam only acts like a wall if you can't throw under it, so get those deflectors way up there! (Crow and Thunderbird rocks) Merry Christmas Forum, Brad. Quoting Bob : The beam is an obstruction that acts like a wall. You’re covering floor

RE: S & L Rule

The beam is an obstruction that acts like a wall. You’re covering floor space, so as long as each sprinkler covers the correct area (30 sf), then the spacing that you are describing sounds in compliance with NFPA 13 spacing rules. Thank you, Bob Knight, CET III 208-318-3057 From:

Re: S & L Rule

I see nothing wrong with that. The beam is your "protection line" or "wall". The heads are spaced properly in each area they are protecting. The heads protecting 5'-0 to the beam (10'-0) are spaced along the branch line properly for that coverage. And the heads throwing 7'-6 to the beam (15'-0)

RE: S & L Rule

I was always taught to treat the beam as a wall. However, I can see an argument for viewing on the floor. If that is the case, I would not have done 3 lines in the 30’ bay. I would shorten up the spacing on the line adjacent to the beam in the 20’ bay. It is relatively cheap to add

A fascinating and challenging tort in Connecticut

Tort when done right, should right some wrongs. It is not thought, that civic immunity helped much, if any, in the case of a Fire Marshal who inspected The Station before it burned. It is not thought that tort got it right by removing hose from standpipe connections; but N.A.'s building

Re: S & L Rule

Me personally, I would treat the beam as a wall, the spray pattern cannot carry over to the next row on the other side, so why would I carry over its dimension for the SxL Best regards, *Joe Burtell, SET, CFPS* [image: Burtell Fire_Small] Phone | Fax | Mobile| Text *406-545-0784

RE: S & L Rule

Assumed a flat ceiling Thank you James Crawford Phaser Fire Protection Ltd. Phone 604-888-0318 Fax 604-888-4732 Cel 604-790-0938 Email jcrawf...@phaserfire.ca Web www.phaserfire.ca From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On

Re: S & L Rule

Is the spacing along the branchline measured along the floor or the roof pitch? Best regards, *Joe Burtell, SET, CFPS* [image: Burtell Fire_Small] Phone | Fax | Mobile| Text *406-545-0784 <++1-406-545-0784>* 116 N. 11th Street | Billings, MT 59101 Email: j...@burtellfire.com Web Site:

S & L Rule

We have been having a discussion in the office about the S rule for spacing of sprinkler heads. We received a sprinkler drawing with some spacing that we do not agree with, see below, but can find no specific direction in NFPA #13 (2013) that says it is wrong. Basic situation we have a small

RE: Floating Ceilings

A SSP has a maximum distance of 12" below the ceiling, which you are within. Even if you wanted to add a level of protection above, the short space would not allow for a full development of the spray pattern. Taylor Schumacher From: Sprinklerforum

RE: Floating Ceilings

I'm still trying to wrap my head around this. For the most part I don't this the area above the floating ceilings can be classified as a concealed space from the rules in 13 (2016). All the ceiling are less than 12" below a concrete deck, but I don't know why that would exclude sprinkler above

Re: Corrosion

Based on what, specifically? Steve Original message From: tcfire Date: 12/21/17 5:54 AM (GMT-08:00) To: sprinklerforum@lists.firesprinkler.org Subject: RE: Corrosion Seems to make a great argument for nitrogen infusion. Sent from my Sprint Samsung

RE: Corrosion

Seems to make a great argument for nitrogen infusion. Sent from my Sprint Samsung Galaxy S7. Original message From: Steve Leyton Date: 12/20/17 8:51 PM (GMT-05:00) To: sprinklerforum@lists.firesprinkler.org Subject: RE: Corrosion The fact that

Opinions requested

I’ve got a 10+2 Sty building that needs a new pump for a myriad of reasons. Replacement will be larger to satisfy Standpipe demand. New system pressures will require PRV’s to the 10th flr. and maybe one or both levels of mechanical above. None currently installed, 190 PSI in the pump room.