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Sprinkler head clearance

cda

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New system or existing ??

How many sq ft is the closet ?

I believe it is measured to the fusible bulb or metal
Will check
 

cda

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@cda , @James Davis ,Just found this thread. Effectively not clear. All figures in the book are showing distances from center of sprinkler.

Anybody found a specific reference specifying if it is from side or center? We have a pendant head in a closet with a 4 in. distance to the wall and the fire department is challenging us... For now the only thing we can refer to are the images showing the center of heads...


Some opinions

I think most slant to the element

 

e hilton

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My opinion ... if you can measure 4” to any part of the head, it should be ok. The difference is ... what ... an inch max? Clearly they are complying with the intent of the code.

Having said that ... we used to install the heads on a double 90 drop arm so they could be easily adjusted to fall in the center of a ceiling tile. Adjusting it to gain the half inch or so would be simple.
 

GicleursBG

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St-Hyacinthe
This is the way they installed the the new heads. Center of sprinkler to wall is exactly 4". I think we're struggling with a power trip right now. It is in a small closet. But from all the references and opinions above, I would continue to think that the bulb is the center of the detector and it is the center of the detector that must be at 4" of the wall. The distance of the deflector is not that important as NFPA talk consider the dead-air space and operation time
 

cda

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This is the way they installed the the new heads. Center of sprinkler to wall is exactly 4". I think we're struggling with a power trip right now. It is in a small closet. But from all the references and opinions above, I would continue to think that the bulb is the center of the detector and it is the center of the detector that must be at 4" of the wall. The distance of the deflector is not that important as NFPA talk consider the dead-air space and operation time


How many sq ft.???????????????

If in a closet, even medium size, what ever that is, and fire starts,, heat goes up, and banks down, so at some point the element will be saturated with heat and activate.

And when the closet door is opened, gallons and gallons of water will come out, at least that is what I saw in the movie.
 

cda

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I see now if you go by "mm" you are ok, isn't Canada on the metric system??
 

cda

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This is the way they installed the the new heads. Center of sprinkler to wall is exactly 4". I think we're struggling with a power trip right now. It is in a small closet. But from all the references and opinions above, I would continue to think that the bulb is the center of the detector and it is the center of the detector that must be at 4" of the wall. The distance of the deflector is not that important as NFPA talk consider the dead-air space and operation time


How are you connected with this?? Owner, architect, contractor, sprinkler person or ??
 

cda

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We're the engineers behind the conception. Yes in Canada. Closets are 2'1"D X 5'4"W X +/- 8' H


Boy one second delay, is going to take out the entire closet.......

Suggest seek intelligent life, go up the food chain, till you find someone with common sense.

Is the fire sprinkler company that designed it and installed it, helping you with this.
 

Teeshot

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Nov 1, 2017
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Pleasanton CA
It is my understanding that the intent of the separation of fire sprinklers is so that the pattern of the spray is not compromised. Fire sprinklers are measured center to center when spacing them from one another so it would be practicable to measure from the head center to a wall. Also, there are many types of heads on the market with different dimensional widths that would make it inconsistent to measure to their side faces, instead of their center points.
 
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