I do not disagree that the pattern is not perfect. However, the goal is
fire control, not fire suppression. In light and ordinary hazards
occupancies especially, as long as the fire stays contained, we have met
the goal of NFPA 13. In addition, we need to ensure the sprinkler operates
in a reaso
One should realize what happens when a continuous deluge of water, ie fire
sprinkler flow, encounters a piping group or an electrical conduit group,
especially level piping groups. The water flows on the piping surface and then
drops off the pipe at the pipe’s bottom. What hits the top drops off
NFPA 13 - 2019 - The answer depends on the hazard and the sprinkler type.
ESFR and CMSA do have requirements that address this issue. For light and
ordinary hazards, as long as the individual widths are 4' or less with some
separation to allow water to hit the floor,and the sprinkler deflector is
§Joe,
I'm not clear on which edition of NFPA 13 is in force for you, however I
would look closely at the parameters of §9.5.5.3, inclusive, and the
annex material for those sections in the '19 edition, and into
§10.2.7.2.1.1.
I looked into the '19 handbook, and found the following in the "bl
Hello All,
Is the purpose of subdividing a dry system per NFPA 13, 7.3.9 - 7.2.3.9.2
(2013 ed) in order to control system size? Let's say you have a system that
is 1000 gallons and I don't want to be subject to the water delivery time
requirement can I divide the system right down the middle with a
I apologize if this has already been asked and answered. I could have sworn
NFPA addressed this but I am looking for when a group of mechanical pipes
are racked and create a wide obstruction, what the minimum gaps between
pipe to not consider it a solid obstruction? Can someone point me to the
corr
