OHIO SPRINKLER TECHNICIAN COMPREHENSIVE EXAM
2025/2026 QUESTIONS WITH SOLUTIONS GRADED A+
✔✔Pressure tanks should maintain an air pressure of at least ______ psi. - ✔✔75PSI
✔✔Risers shall be supported by pipe clamps or by hangers located on the horizontal
connections within ________ inches of the centerline of the riser. - ✔✔24in
✔✔Screwed unions shall not be used on pipe larger than _________ inch - ✔✔2in
✔✔Sprinklers installed where maximum ambient ceiling temperatures do not exceed
100 degrees farenheit shall be __________ temperature rated sprinklers. - ✔✔Ordinary
✔✔Sprinklers under glass or plastic skylights exposed to direct rays of the sun shall be
of ____________ temperature classification. - ✔✔intermediate
✔✔Starter lengths less than ____ feet shall not require a hanger - ✔✔6ft
✔✔The distance between the last lateral sway brace and the end of the pipe shall not
exceed _______ feet - ✔✔6
✔✔The hydraulic symbol for a 45 degree elbow is _______? - ✔✔EE
✔✔The maximum area of coverage by a single sprinkler head in a light hazard
occupancy is __________ square feet. - ✔✔225sqft
✔✔The maximum area to be protected by any single residential sprinkler shall not
exceed ________ square feet. - ✔✔144sqft
✔✔The minimum distance between sprinkler heads in a compartment is _____ feet. -
✔✔8ft
✔✔The unsupported length between the end sprinkler and the last hanger on the line
shall not be greater than _______ inches for 1 1/2 inch and larger pipe - ✔✔60in
✔✔Toggle hangers shall be permitted only for the support of _______ or smaller piping
- ✔✔1 1/2in
✔✔What is the main reason water base fire protection systems fail? - ✔✔Human error
(shut valve)
, ✔✔What is the maximum distance from any wall or partition when using a residential
sprinkler head tha is not listed with specific coverages? - ✔✔6ft
✔✔What is the maximum system capacity to be controlled by a single dry pipe valve? -
✔✔750gallons
✔✔What is the maximum unsupported armover length where maximum pressures
exceed 100 psi? - ✔✔12in
✔✔What is the maximum number of sprinkler heads to be controlled bya single
preaction system? - ✔✔1000
✔✔What is the minimum size pressure relief valve to be used on a gridded wet pipe
sprinkler system? - ✔✔1/4in
✔✔What type of piping shall be used when piping to a water motor gong? - ✔✔Non-
corrosive
✔✔When installing underground piping, the top of the pipe shall be buried not less than
_______ feet below the frost line for that locality. - ✔✔1
✔✔When soldering copper pipe, flux is used to prevent what? - ✔✔Oxidation
✔✔When testing Automatic- and Semiautomatic-Dry Standpipe Systems, the system
shall deliver a minimum of ______ at the hose connection within _______ of opening
the hose valve. - ✔✔250GPM under 3min
✔✔Where is the pressure relief valve located on an air supply line? - ✔✔Between the
compressor and the control valve
✔✔Where sprinklers are spaced less than 6 feet apart, hangers spaced up to a
maximum of _______ feet shall be permitted. - ✔✔12ft era
✔✔Where threaded pipe is used as part of a sway brace assembly, it shall not be less
than Schedule ______ . - ✔✔Schedule 30
✔✔Where upward or lateral movement of the system piping would result in damage to
the sprinkler through impact against the building structure, equipment, or finish
materials, branch lines shall bge restrained at intervals not exceeding _______ feet. -
✔✔30
✔✔Which of the following best describes a bullhead tee? - ✔✔1 1/2" x 1 1/4" x 2"
2025/2026 QUESTIONS WITH SOLUTIONS GRADED A+
✔✔Pressure tanks should maintain an air pressure of at least ______ psi. - ✔✔75PSI
✔✔Risers shall be supported by pipe clamps or by hangers located on the horizontal
connections within ________ inches of the centerline of the riser. - ✔✔24in
✔✔Screwed unions shall not be used on pipe larger than _________ inch - ✔✔2in
✔✔Sprinklers installed where maximum ambient ceiling temperatures do not exceed
100 degrees farenheit shall be __________ temperature rated sprinklers. - ✔✔Ordinary
✔✔Sprinklers under glass or plastic skylights exposed to direct rays of the sun shall be
of ____________ temperature classification. - ✔✔intermediate
✔✔Starter lengths less than ____ feet shall not require a hanger - ✔✔6ft
✔✔The distance between the last lateral sway brace and the end of the pipe shall not
exceed _______ feet - ✔✔6
✔✔The hydraulic symbol for a 45 degree elbow is _______? - ✔✔EE
✔✔The maximum area of coverage by a single sprinkler head in a light hazard
occupancy is __________ square feet. - ✔✔225sqft
✔✔The maximum area to be protected by any single residential sprinkler shall not
exceed ________ square feet. - ✔✔144sqft
✔✔The minimum distance between sprinkler heads in a compartment is _____ feet. -
✔✔8ft
✔✔The unsupported length between the end sprinkler and the last hanger on the line
shall not be greater than _______ inches for 1 1/2 inch and larger pipe - ✔✔60in
✔✔Toggle hangers shall be permitted only for the support of _______ or smaller piping
- ✔✔1 1/2in
✔✔What is the main reason water base fire protection systems fail? - ✔✔Human error
(shut valve)
, ✔✔What is the maximum distance from any wall or partition when using a residential
sprinkler head tha is not listed with specific coverages? - ✔✔6ft
✔✔What is the maximum system capacity to be controlled by a single dry pipe valve? -
✔✔750gallons
✔✔What is the maximum unsupported armover length where maximum pressures
exceed 100 psi? - ✔✔12in
✔✔What is the maximum number of sprinkler heads to be controlled bya single
preaction system? - ✔✔1000
✔✔What is the minimum size pressure relief valve to be used on a gridded wet pipe
sprinkler system? - ✔✔1/4in
✔✔What type of piping shall be used when piping to a water motor gong? - ✔✔Non-
corrosive
✔✔When installing underground piping, the top of the pipe shall be buried not less than
_______ feet below the frost line for that locality. - ✔✔1
✔✔When soldering copper pipe, flux is used to prevent what? - ✔✔Oxidation
✔✔When testing Automatic- and Semiautomatic-Dry Standpipe Systems, the system
shall deliver a minimum of ______ at the hose connection within _______ of opening
the hose valve. - ✔✔250GPM under 3min
✔✔Where is the pressure relief valve located on an air supply line? - ✔✔Between the
compressor and the control valve
✔✔Where sprinklers are spaced less than 6 feet apart, hangers spaced up to a
maximum of _______ feet shall be permitted. - ✔✔12ft era
✔✔Where threaded pipe is used as part of a sway brace assembly, it shall not be less
than Schedule ______ . - ✔✔Schedule 30
✔✔Where upward or lateral movement of the system piping would result in damage to
the sprinkler through impact against the building structure, equipment, or finish
materials, branch lines shall bge restrained at intervals not exceeding _______ feet. -
✔✔30
✔✔Which of the following best describes a bullhead tee? - ✔✔1 1/2" x 1 1/4" x 2"
