If this is to be considered as open grid ceiling you obviously do not meet all criteria but that does not mean you only have one option of installing low sprinklers.
SPRINKLER DEFLECTOR INSTALL
Also, 8.15.14 does not tell you you need to install sprinklers underneath, it only tells you the requirements for open grid ceilings for adequate level of protection from the higher level sprinklers only. Therefore your needed clearance is most likely shorter than 15". Note that 8.15.14 mentions the distances between open grid ceiling and deflector, not bottom of upper ceiling. If I have less than 18", for example 15", between suspended ceiling and primary ceiling, per Section 8.15.14, I will need to install beneath sprinkler heads. RE: Suspended acoustic baffle vs Sprinkler head MarsMax (Mechanical) for 10 ft x 10 ft sprinkler layout in light hazard. So it seems I'm good here without beneath sprinkler heads? As long as the distance between my suspended rails and my primary ceiling satisfies with Section 8.15.14.(2), which is 18 in. Section 8.15.14.(1) said " Open-grid ceilings in which the openings are 1/4" or larger in the least dimension, where the thickness (1/2" in my case) OR depth (66" in my case) of the material does not exceed the least dimension (12" in my case) of the opening". The depth of each flat is 66" but the thickness is only 1/2". Openings constitute more than 70% of the suspended area. That said I have 9 x openings in total and each opening is 180" x 12". I checked section 8.15.14 (NFPA-13, 2013) Open-Grid Ceiling and considered one section between two suspended rails as one "opening": Each row of rail will have 10-12 flats.Ģ) The flats are rigid and they achieved a Class A Flame Spread rating also passed CAN ULC S102-10. The total length of one row of suspended rail that these flats will lay-in is 180". 1) The distance between each row is about 12".
0 kommentar(er)
