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Distance below ceiling for standard pendant & Upright sprinklers

Distance below ceiling for standard pendant & upright sprinklers

Distance below ceiling for standard pendant & upright sprinklers
Distance below ceiling for standard pendant & upright sprinklers

For unobstructed construction:

The distance between sprinkler deflector and the ceiling shall be (1 in) minimum and (12 in) maximum throughout the area of coverage of the sprinkler.

This requirements shall not apply for the followings:

1- For concealed, recessed, and flush types.

2- for light and ordinary hazard occupancies with ceilings of noncombustible or limited-combustible construction where either (A) or (B) applies.

(A) Where a vertical change in ceiling elevation within the area of coverage of the sprinkler creates a distance of more than 36 in. (900 mm) between the upper ceiling and the sprinkler deflector, a vertical plane extending down from the ceiling at the change in elevation shall be considered a wall for the purpose of sprinkler spacing as shown in Figure below.

Distance below ceiling for standard pendant & upright sprinklers
Distance below ceiling for standard pendant & upright sprinklers


(B) Where the distance between the upper ceiling and the sprinkler deflector is less than or equal to 36 in. (900 mm), the sprinklers shall be permitted to be spaced as though the ceiling was flat, provided the obstruction rules are observed as shown in Figure below.

Distance below ceiling for standard pendant & upright sprinklers
Distance below ceiling for standard pendant & upright sprinklers


Fire Protection Specialists
Fire Protection Specialists
Keeping You Up To Code


2 comments:

  1. It will be better to understand if you provide a example of ceiling.

    ReplyDelete
  2. Actually if history is right, Pendant lights came into existence just as a useful substitute but a less detailed version of Chandeliers with almost same features and functionality. Pendant Light

    ReplyDelete