Automcatic Fire Sprinkler System
Automcatic Fire Sprinkler System
(OP)
Hi!
I am currently designing an AFSS for a school requirement. I would like to ask if you can put sprinklers in the main cross? I designed my main cross to run along the corridor of the building. can i put my sprinklers in the main cross?
Thank you in advance!
I am currently designing an AFSS for a school requirement. I would like to ask if you can put sprinklers in the main cross? I designed my main cross to run along the corridor of the building. can i put my sprinklers in the main cross?
Thank you in advance!





RE: Automcatic Fire Sprinkler System
R/
Matt
RE: Automcatic Fire Sprinkler System
one more question, is it necessary to run your cross main along the long side of the building? also,I am having trouble in assigning the diameters of my pipe. According to NFPA 13, the pipe schedule method is based on how many sprinklers are to be supplied. but I am using hydraulically designed method, How can I assume the size of the pipes?
Thank you.
RE: Automcatic Fire Sprinkler System
Are you a Sprinkler Contractor?
Not being rude, but those questions are a little beyond what I feel can be answered here..
R/
Matt
RE: Automcatic Fire Sprinkler System
well, thank you for your help anyways.
R/
Gab
RE: Automcatic Fire Sprinkler System
I read "AFSS for a school requirement" as you were designing a school.
Still, the answers to those questions are developed based on many variables.
Chapter 3 of NFPA 13 is where I'd start. That sets the base.
Then the rest of the Standard. I will caution, it is very confusing and is normally done under direct, senior experience supervision.
Good luck.
R/
Matt
RE: Automcatic Fire Sprinkler System
That said and your question not being "solve my problem for me".
No, but tends to be most cost effective and convenient.
Use pipe schedule method as a starting point for doing hydraulic calculations. Sizes from the schedule method will usually be within 1-2 pipe sizes of what hydraulic calculations end up with.
RE: Automcatic Fire Sprinkler System
As long as you are calculating your most demanding area, you are creating your own pipe schedule. You are sizing the branch lines for the calculated area and then you are sizing the main to deliver that amount of water to that area. Size the rest of your branch lines based on the same schedule that you developed in your calculations.
You can put sprinklers on a cross main, but you need to look at the obstruction rules about having upright sprinklers on certain sizes of pipe. Chapter 8 will be your friend for this stuff.
Good luck on your assignment. I'm glad to see schools actually teaching some of this in a civil engineering program.
Travis Mack
MFP Design, LLC
www.mfpdesign.com
"Follow" us at https://www.facebook.com/pages/MFP-Design-LLC/9221...
RE: Automcatic Fire Sprinkler System
Do you know about trees, looped, gridded?
RE: Automcatic Fire Sprinkler System