Distance from walls: half the distance between sprinkler heads (i.e. With obstructed construction, you can be 1-6" below the bottom of the beams to a maximum of 22". Requirements for the I hope that helps to answer your question. 18 inches maximum distance from the roof decking or ceiling. * * Most sprinkler heads will be installed 1″ from the ceiling. of Standard Pendent and Upright Spray Sprinklers for Ordinary Hazard 8.6.3.2.1 The distance from sprinklers to walls shall not ex-ceed one-half of the allowable distance between sprinklers as indicated in Table 8.6.2.2.1(a) through Table 8.6.2.2.1(d). That is an urban legend according to a few sprinkler inspectors I've spoken to. I would believe it would be less expensive if you would turn up the sprinklers and install upright sprinkler heads in the construction area. Find the listing on the sprinkler head, and it should have the distance requirements available. Per NFPA 13, the standard for installation of automatic fire sprinkler systems, in unobstructed construction, the minimum deflector distance from the ceiling is 1" and the maximum is 12". ceiling were addressed, including skylights, stepped ceilings, and ceiling pockets. (1.5 m) in diameter, provided the plan view of the fan is at least 50 percent open. Viking Standard Response Upright Sprinkler VK598 is a thermosensitive glass bulb spray sprinkler available in various temperature ratings to meet design requirements. Design requirements for the protection of storage on solid shelves were added. Table 8.6.2.2.1(b) Protection Areas and Maximum Spacing 8.6.3.2 Maximum Distance from Walls. A cloud ceiling is simply a suspended ceiling that covers only a portion of a room or space below, typically to hide mechanical equipment. In terms of obstruction from the fan blades, NFPA 13 also allows sprinklers to be placed "without regard" to the blades of ceiling fans less than 60 inches (1.5 m) in diameter as long as the plan view is at least 50 percent open (NFPA 13 2010-19 under "Obstructions to Sprinkler Discharge Pattern Development" subsections in Chapter 8). The fire watch does not affect the rated barrier, but the 1-hour fire rated barrier is required to separate the construction area from the occupied area if there are no sprinklers in the construction area. There is no hard and fast rule on the distance. It depends on the type sprinkler head. The design requirements for ESFR sprinklers were expanded to allow the user to choose the storage height and then the building height for any allowable arrangement. 1356 INSTALLATION OF SPRINKLER SYSTEMS. NFPA’s technical advisory program, which gives NFPA members an opportunity to ask questions relating to code requirements, receives multiple questions each week on how to locate sprinklers when cloud ceilings are present. this section only applies to standard sprinklers: pendant and upright 8.6.5.2.1.10* Sprinklers shall be permitted to be placed without regard to the blades of ceiling fans less than 60 in. The 25.2 nominal K-Factor provides greater flows at lower pressures to protect higher ceiling and storage heights. 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