I also found an article outlining the difference between nfpa 13 13r and 13d.
Nfpa 13r attic sprinklers.
Nfpa 13r references nfpa 13 in many aspects hanging and bracing design densities and spacing outside of dwelling unit painting and finish of sprinklers welding etc.
The exact code in nfpa 13 they stated was 8 15 1 2 for any omissions.
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Unlike nfpa 13 nfpa 13r works to make the installation of the sprinkler system more affordable and accessible for residential occupancies by targeting the areas of highest fire risk to life safety with sprinkler systems.
The international building code ibc requires all buildings containing group r occupancies to have sprinklers throughout.
Attachments ccf 000578 jpg 198 6 kb.
If this standard does not specifically address a situation nfpa 13 is a good resource that can be utilized by the installer and the authority having jurisdiction for a solution.
A number of sprinkler contractor s are not aware of this don t care and are willing to hang their hat on nfpa 13r but someday when they are caught they are going to be in a very bad situation.
When planning a new construction project it is important to understand the fire sprinkler code requirements.
In addition to the permissible omissions already listed for residential applications where nfpa 13 systems have been installed sprinklers can be omitted in nfpa 13r systems in attics penthouse equipment rooms elevator machine rooms concealed spaces dedicated to dwelling unit ventilation equipment and other concealed spaces that are not used or intended for living purposes or storage.
In past years confusion in this area often led to change orders adding attic sprinklers to nfpa 13r systems.
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It s stated purpose is to additional prevent flashover in the room of fire origin where sprinklered nfpa 13r 2019 1 2 2.
Sprinklers would be required if not subdivided even though nfpa 13r doesn t require sprinklers in a combustible attic space.
This attic is completely combustible and does not meet any of the other conditions to omit sprinkler coverage.
Sprinklers in attic could possibly be an anti freeze loop if the head count does not exceed 25 sprinkler heads nfpa 3 for discussion for 13r 13d or should pipe volume be an issue.
However the need for sprinklers specifically located in the concealed spaces of floors and roofs is dependent on the type of sprinkler system specified nfpa 13 or nfpa 13r and the use of fireblocking and draftstopping.
