I have a question about the interpretation of the articles 188.8.131.52.1 for the staircase. It is said that we have to provide a sprinkler on top of the stairway shaft, and one under the first intermediate landing.
On another way, in each section of chapter 8 (for each kind of sprinkler head), it is asked to install a sprinkler under a 4ft of more obstruction.
My question: Even if I have a non-combustible stairway, do I have to install sprinkler under each landing (main and intermediate) if they have more than 4 ft or because of 184.108.40.206.1 it is not required?
Note: I saw in sections 220.127.116.11.2 and 18.104.22.168.2 that it is required under residential stairway. My question is more about high-rise building for offices.
I'm currently using NFPA-13 2013.