Ohio Sprinkler
Installation reqs. for sprinkler systems in light hazard area
Max coverage is 225sqr
Max distance between heads is 15ft
Max distance between branch lines is 15ft
Max system area or size is 52000sqr
Ordinary hazard Group 1
Occupancies or portions of other occupancies where combustibility is low, the quantity of
combustible is moderate, stockpiles of combustibles do not exceed 8ft, and fires with
moderate rates of heat release are expected
Ordinary hazard group 2
Occupancies or portions of other occupancies where the quantity and combustibility of
contents are moderate to high, where stockpiles of contents with moderate rates of heat
release do not exceed 12ft, and stockpiles of contents with high rates of heat release donot
exceed 8ft
Installation reqs. for ordinary hazard areas
Max coverage is 130ftsqr
Max distance between sprinklers is 15ft
Max distance between branch lines is 15ft
Max system area of size is 52000ftsqr
Extra hazard group 1
Where the quantity and combustibility of contents are very high and dust, lint, or other
materials are present, introducing the probability of rapidly developing fires with high rates of
heat release butt with little or no combustible or flammable liquids
Extra hazard group 2
Where moderate to substantial amounts of flammable or combustible liquids or occupancies
where shielding of combustibles is extensive
,Installation reqs. for sprinkler systems in extra hazard areas
Max sprinkler coverage is 130ftsqr
Max distance between sprinklers is 15ft
Max distance between branch lines is 15ft
Max system area or size is 40000ftsqr
Wet pipe system
System employing automatic sprinklers attached to a piping system containg water and
connected to a water supply so that water discharges immediately from sprinklers opened by
heat from a fire
Most common system
wet pipe system
Drain valve
A valve that allows the release of water in a sprinkler sytem
Inspectors test connection
The orifice place in the connection is the same as the smallest orifice sprinkler on the
system, creating the most demanding waterflow for the waterflow alarm device
Inspectors test valve
a Valve on the sprinkler system that is opened periodically to simulate a waterflow throught
the riser, making the waterflow alarm operate
Branch line
The pipes supplying psrinklers, either directly or through sprigs, drops, return bends, or
arm-overs
Drop nipple
A vertical drop from branch line piping to supply a sprinkler system
Flange and spigot
supply that teminates the underground supply pipe inside the building
, riser nipple
a vertical pipe between the main and branch line
Sprinkler riser
The vertical supply pipes in a sprinkler system
Cross main
The pipes supplying the branch lines, either directly or through riser nipples. The
________________ wil generally be installed parallel to the building's roof surface
Anitfreeze system
A wet pipe system using automatic sprinklers that contains a liquid solution to prevent
freezing of the system, intended to discharge the solution upon sprinkler operation
Antifreeze solutions are required to be
listed
Antifreeze solutions are limited to
premixed solutions of glycerin or propylene glycol
An antifreeze system is required to have what, when having a backlow prevention device
Expansion chamber
What is used to check the specific gravity of antifreeze
a hydrometer and refractometer
Dry pipe system
A system employing automatic sprinklers that are attached to a piping system containing air
or nitrogen under pressure. The release of these components permits the water pressure to
open a valve
Dry pipes are normally used where
In areas where freezing is a problem
The dry pipe system has to be designed with a certain amount of
slope to the piping so that it is easy to drain the sytem
Installation reqs. for sprinkler systems in light hazard area
Max coverage is 225sqr
Max distance between heads is 15ft
Max distance between branch lines is 15ft
Max system area or size is 52000sqr
Ordinary hazard Group 1
Occupancies or portions of other occupancies where combustibility is low, the quantity of
combustible is moderate, stockpiles of combustibles do not exceed 8ft, and fires with
moderate rates of heat release are expected
Ordinary hazard group 2
Occupancies or portions of other occupancies where the quantity and combustibility of
contents are moderate to high, where stockpiles of contents with moderate rates of heat
release do not exceed 12ft, and stockpiles of contents with high rates of heat release donot
exceed 8ft
Installation reqs. for ordinary hazard areas
Max coverage is 130ftsqr
Max distance between sprinklers is 15ft
Max distance between branch lines is 15ft
Max system area of size is 52000ftsqr
Extra hazard group 1
Where the quantity and combustibility of contents are very high and dust, lint, or other
materials are present, introducing the probability of rapidly developing fires with high rates of
heat release butt with little or no combustible or flammable liquids
Extra hazard group 2
Where moderate to substantial amounts of flammable or combustible liquids or occupancies
where shielding of combustibles is extensive
,Installation reqs. for sprinkler systems in extra hazard areas
Max sprinkler coverage is 130ftsqr
Max distance between sprinklers is 15ft
Max distance between branch lines is 15ft
Max system area or size is 40000ftsqr
Wet pipe system
System employing automatic sprinklers attached to a piping system containg water and
connected to a water supply so that water discharges immediately from sprinklers opened by
heat from a fire
Most common system
wet pipe system
Drain valve
A valve that allows the release of water in a sprinkler sytem
Inspectors test connection
The orifice place in the connection is the same as the smallest orifice sprinkler on the
system, creating the most demanding waterflow for the waterflow alarm device
Inspectors test valve
a Valve on the sprinkler system that is opened periodically to simulate a waterflow throught
the riser, making the waterflow alarm operate
Branch line
The pipes supplying psrinklers, either directly or through sprigs, drops, return bends, or
arm-overs
Drop nipple
A vertical drop from branch line piping to supply a sprinkler system
Flange and spigot
supply that teminates the underground supply pipe inside the building
, riser nipple
a vertical pipe between the main and branch line
Sprinkler riser
The vertical supply pipes in a sprinkler system
Cross main
The pipes supplying the branch lines, either directly or through riser nipples. The
________________ wil generally be installed parallel to the building's roof surface
Anitfreeze system
A wet pipe system using automatic sprinklers that contains a liquid solution to prevent
freezing of the system, intended to discharge the solution upon sprinkler operation
Antifreeze solutions are required to be
listed
Antifreeze solutions are limited to
premixed solutions of glycerin or propylene glycol
An antifreeze system is required to have what, when having a backlow prevention device
Expansion chamber
What is used to check the specific gravity of antifreeze
a hydrometer and refractometer
Dry pipe system
A system employing automatic sprinklers that are attached to a piping system containing air
or nitrogen under pressure. The release of these components permits the water pressure to
open a valve
Dry pipes are normally used where
In areas where freezing is a problem
The dry pipe system has to be designed with a certain amount of
slope to the piping so that it is easy to drain the sytem
