Sprinkler Head Spacing and Location

Sprinkler Head Location

There are two main criteria for site sprinkler heads. First, sprinklers should be located so as to be within the hot gas layer that develops near the ceiling during a fire due to the activation occurs when the spray head up to a certain temperature. Secondly, it should be located so that the water that is discharged from the spray does not break down or be affected by construction elements such as bridges, trusses, or soles.

Water distribution for standard spraying necklace

Drawing on the left shows the distribution of water to the standard pendant fixtures spray upright. It is useful to understand how these things within the distribution area can alter the throw and disrupts the ability of the spray to extinguish the fire.

This is a general description of the throw spray should not be used to determine the spacing spraying. Refer to the manufacturer's data for specific data throw. Please note, that throw the spray should not be used for spraying spacing - local laws determine the spacing requirements.

Head Sprinkler Spacing

The table below shows the spray on the basis of the requirements of NFPA 13. spacing must use this table only as a tool for architects. It must be the actual design of the sprinkler system by a professional engineer each project.

OCCUPANCY HAZARD	SQUARE FOOT PER HEAD	MAXIMUM SPACING BETWEEN SPRINKLERS
Light Hazard (Office, Educational, Religious, Institutional, Hospitals, Restaurants, Clubs, Theaters, etc.)	130-200 SF per head (based on obstructions and flow calcs)	15 ft
Ordinary Hazard (Mills, Manufacturing, Processing, Machine Shops, Repair Garages, Post Offices, Bakeries, Wood Machining and Assembly, Auto Parking, etc.)	130 SF per head	15 ft
Extra Hazard (Plastic Processing, Chemical Spraying, Metal Extruding, Printing, Varnishing, Painting, etc.)	90-130 SF per head (based on obstructions and flow calcs)	12 ft

The maximum distance from the wall: half (1/2) of the maximum distance between the sprinkler heads.

The minimum distance between sprinklers: Usually 6'-0 ".

The distance from the ceiling: minimum 1 ", and the maximum 12" of the building without hindrance. Minimum 1 "is a typical comfort, but concealed, and can be mounted machine guns less than 1" from the ceiling flow and be installed on the building included.