In accordance widh the NFPA 13 standard (paragraph 9.3.5.3.1), what's the distance between SPK when a draft curtain exists between them ? It is 1.8 or 3.6 m.
The situation described in 9.3.5 is not for draft curtains between sprinklers, rather parallel. If this is your case, see figure A.9.3.5 for the maximum distance.
Hello thank's for the answear, but if a draft curtain with 2 m of depth was between two sprinklers what's the distance between them ? and the distance between the sprinklers and the ceiling ? the draft curtain will be considered as a wall or beam or it is a special case ?