Cloud ceilings are panels that sit beneath a structural ceiling with gaps. They are becoming more and more popular in commercial and industrial buildings. NFPA 13, the Standard for the Installation of Sprinkler Systems, does not have definitive guidance on automatic sprinkler installation requirements for these ceilings. To remedy this, FPRF partnered with Hughes Associates, Inc. to conduct a study to better understand Sprinkler Protection for Cloud Ceilings.
The result provides guidance for sprinkler installation requirements for large, contiguous clouds by determining the maximum gap size between the wall and the cloud edge at which sprinklers located on the structural ceiling are not effective.