OHIO SPRINKLER TECHNICIAN CORE EXAM SET 2025/2026
QUESTIONS WITH SOLUTIONS GRADED A+
✔✔A Professional Engineer is required to design the shoring for any trench that is
_______. - ✔✔deeper than 25 feet or wider than 12 feet
✔✔A fixed temperature sensor is in an area where the ceiling temperature can reach
110 degree Farenheit, its temperature category should be __________. -
✔✔intermediate temperature
✔✔A main drain test on wet sprinkler systems must be conducted ______ per NFPA 25
requirements - ✔✔Annually
✔✔A pipe hanger that has a load rating of 500 pounds must be able to support
_________ pounds. - ✔✔2,750
✔✔A system that is a basically a dry pipe system that can also be activated by a
detection system is a ___________ preaction system. - ✔✔Non-interlock
✔✔A typical mix of concrete for thrust blocks is ____________. - ✔✔one part cement, 2
1/2 parts sand, and 5 parts washed gravel
✔✔All preaction systems that have over __________ sprinklers are required to be
supervised. - ✔✔20
✔✔Alloy steel chain slings that have ______ must be removed from service
immediately. - ✔✔Twisted links
✔✔An occupancy where combustibility is low, quantity of combustibles is moderate,
stockpiles of combustibles do not exceed 8 feet, and fires with moderate rates of heat
release are expected is classified as a(n) _______ occupancy. - ✔✔Ordinary hazard,
Group 1
✔✔Automatic feed capability makes what kind of tank the most desirable water storage
facility? - ✔✔An elevated tank
✔✔CPVC pipe is manufactured in Standard Dimensional Ratio (SDR) ________. -
✔✔13.5
✔✔Dry pipe or preaction sprinkler system piping that protects or passes through
freezers or cold storage rooms must be visually inspected _________. - ✔✔Annually
, ✔✔Meters used to measure water consumption are ________ fire protection systems -
✔✔Disadvantage
✔✔NFPA 13 states that fire department connections must be provided for all
sprinklered buildings, including those with dry-pipe systems, except single-story
buildings not exceeding ________ square feet. - ✔✔2,000sqft
✔✔On standpipe and hose systems, NFPA 25 requires inspection of pressure
regulating devices _______. - ✔✔Quarterly
✔✔Post indicator valves must be set so the top of the post is ________ inches above
final grade. - ✔✔36
✔✔Protectowire is __________. - ✔✔Fixed temperature sensor
✔✔Restraints ___________ movement of pipe. - ✔✔Vertical
✔✔Standpipe sizing is allowed by the schedule method provided the water supply will
produce a minimum of _________. - ✔✔65 psi at the topmost outlet under minimum
flow conditions
✔✔Testing and inspection of backflow preventers should be performed ______ by a
certified technician. - ✔✔Monthly
✔✔The C-factor is a term used to classify the _______ . - ✔✔Roughness of the inside
of the pipe
✔✔The C-factor is used in hydraulic calculations for dry systems is ________ the C-
factor used in wet systems. - ✔✔Lower then
✔✔The Flammable and Combustible Liquids code is ____ - ✔✔NFPA 30
✔✔The NFPA document that should be consulted for information on the installation of
centrifugal fire pumps is ____ - ✔✔NFPA 20
✔✔The NFPA standard for the Inspection, Testing, and Maintenance of Water-Based
Fire Protection Systems is ___ - ✔✔NFPA 25
✔✔The NFPA standard for the Installation of Private Fire Service Mains and their
Appurtenances is _____ - ✔✔NFPA 24
QUESTIONS WITH SOLUTIONS GRADED A+
✔✔A Professional Engineer is required to design the shoring for any trench that is
_______. - ✔✔deeper than 25 feet or wider than 12 feet
✔✔A fixed temperature sensor is in an area where the ceiling temperature can reach
110 degree Farenheit, its temperature category should be __________. -
✔✔intermediate temperature
✔✔A main drain test on wet sprinkler systems must be conducted ______ per NFPA 25
requirements - ✔✔Annually
✔✔A pipe hanger that has a load rating of 500 pounds must be able to support
_________ pounds. - ✔✔2,750
✔✔A system that is a basically a dry pipe system that can also be activated by a
detection system is a ___________ preaction system. - ✔✔Non-interlock
✔✔A typical mix of concrete for thrust blocks is ____________. - ✔✔one part cement, 2
1/2 parts sand, and 5 parts washed gravel
✔✔All preaction systems that have over __________ sprinklers are required to be
supervised. - ✔✔20
✔✔Alloy steel chain slings that have ______ must be removed from service
immediately. - ✔✔Twisted links
✔✔An occupancy where combustibility is low, quantity of combustibles is moderate,
stockpiles of combustibles do not exceed 8 feet, and fires with moderate rates of heat
release are expected is classified as a(n) _______ occupancy. - ✔✔Ordinary hazard,
Group 1
✔✔Automatic feed capability makes what kind of tank the most desirable water storage
facility? - ✔✔An elevated tank
✔✔CPVC pipe is manufactured in Standard Dimensional Ratio (SDR) ________. -
✔✔13.5
✔✔Dry pipe or preaction sprinkler system piping that protects or passes through
freezers or cold storage rooms must be visually inspected _________. - ✔✔Annually
, ✔✔Meters used to measure water consumption are ________ fire protection systems -
✔✔Disadvantage
✔✔NFPA 13 states that fire department connections must be provided for all
sprinklered buildings, including those with dry-pipe systems, except single-story
buildings not exceeding ________ square feet. - ✔✔2,000sqft
✔✔On standpipe and hose systems, NFPA 25 requires inspection of pressure
regulating devices _______. - ✔✔Quarterly
✔✔Post indicator valves must be set so the top of the post is ________ inches above
final grade. - ✔✔36
✔✔Protectowire is __________. - ✔✔Fixed temperature sensor
✔✔Restraints ___________ movement of pipe. - ✔✔Vertical
✔✔Standpipe sizing is allowed by the schedule method provided the water supply will
produce a minimum of _________. - ✔✔65 psi at the topmost outlet under minimum
flow conditions
✔✔Testing and inspection of backflow preventers should be performed ______ by a
certified technician. - ✔✔Monthly
✔✔The C-factor is a term used to classify the _______ . - ✔✔Roughness of the inside
of the pipe
✔✔The C-factor is used in hydraulic calculations for dry systems is ________ the C-
factor used in wet systems. - ✔✔Lower then
✔✔The Flammable and Combustible Liquids code is ____ - ✔✔NFPA 30
✔✔The NFPA document that should be consulted for information on the installation of
centrifugal fire pumps is ____ - ✔✔NFPA 20
✔✔The NFPA standard for the Inspection, Testing, and Maintenance of Water-Based
Fire Protection Systems is ___ - ✔✔NFPA 25
✔✔The NFPA standard for the Installation of Private Fire Service Mains and their
Appurtenances is _____ - ✔✔NFPA 24
