As per Figure 10.2.6.1.3.1(a) from NFPA 13-2019 the sprinkler deflector shall be parallel and aligned to the ceiling, how can this be applied at the site ?? and is it mandatory can`t I install it to be perpendicular to the floor ??
Do you want to restate your question.
Why cant you do as per your attachment??
Is this for an open room or attic area?
some times it will be difficult to due to installation difficulties, and actually just I am trying to understand more and assume more scenarios, so I will have a solution if I face in the future. some times these sloped ceilings are in factories, warehouses,... etc.
Not an engineer or designer
But have not seen a job where it is a problem
The line does not have to be at the peak, not sure if that is some of your concern
The 2018 NFPA 13 answer under Chapter 10 Installation Requirements for Standard Pendent, Upright, and Sidewall Spray Sprinklers; under Section 10.2 Standard Pendent and Upright Sprinklers; Under Subsection 10.2.6 Deflector Position (Standard Pendent and Upright Spray Sprinklers); under Subsection 10.2.6.2 Deflector Orientation:
Be careful the figures in the standard are not necessarily an enforceable part of the standard unless reference to a figure is stated in a Section, Subsection, or Paragraph of the standard.
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