KLER FITTER EXAMINATION (THIS IS A COMBINATION OF TEST QUESTIONS I'VE ENCOUNTERED, DEVON'S CHEAT SHEET, AND A PILE OF TEST REVIEWS FROM PREVIOUS YEARS) GOOD LUCK!! 2026/2027 2026/20
MINNESOTA DEPARTMENT OF LABOR AND INDUSTRY
MINNESOTA JOURNEYMAN SPRINKLER FITTER EXAMINATION (THIS
IS A COMBINATION OF TEST QUESTIONS I'VE ENCOUNTERED,
DEVON'S CHEAT SHEET, AND A PILE OF TEST REVIEWS FROM
PREVIOUS YEARS) GOOD LUCK!! 2026/2027
SPRINKLER FITTER · Official Exam 2026/2027
150 75%% CERTIFIED
QUESTIONS PASSING SCORE RECERTIFICATION
TABLE OF CONTENTS
Section 1 Fire Sprinkler System Fundamentals and Codes Q1-30
Section 2 Piping, Fittings, and Hydraulic Calculations Q31-60
Section 3 Sprinkler Head Types, Placement, and Coverage Q61-90
Section 4 System Installation, Testing, and Inspection Q91-120
Section 5 Standpipe Systems, Special Hazards, and Minnesota Amendments Q121-150
Instructions: Select the single best answer for each question. This exam is designed for Minnesota
Journeyman Sprinkler Fitter certification preparation. Passing score: 75%% (113 questions correct).
TER EXAMINATION (THIS IS A COMBINATION OF TEST QUESTIONS I'VE ENCOUNTERED, DEVON'S CHEAT SHEET, AND A PILE OF TEST REVIEWS FROM PREVIOUS YEARS) GOOD LUCK!! 2026/2027
,SECTION 1 | FIRE SPRINKLER SYSTEM FUNDAMENTALS AND CODES | Q1-Q30 | MINNESOTA JOURNEYMAN SPRINKLER FITTER
EXAMINATION (THIS IS A 2026/2027
Q1. Question 1 of 150
A contractor is designing a wet-pipe sprinkler system for a newly constructed office
building in Minneapolis. The building owner asks which NFPA standard governs the
installation of automatic sprinkler systems. The contractor correctly references
which standard?
A. NFPA 13R
B. NFPA 13D
C. NFPA 25
D. NFPA 13
Correct Answer: B
Rationale:
NFPA 13 is the standard for the Installation of Sprinkler Systems and applies
to commercial and industrial occupancies. NFPA 13R covers residential
occupancies up to four stories, NFPA 13D covers one- and two-family dwellings,
and NFPA 25 covers inspection, testing, and maintenance.
Q2. Question 2 of 150
A sprinkler fitter is reviewing the Minnesota State Fire Code before beginning work
on a project in St. Paul. The state fire code adopts which edition of NFPA 1 as its
foundation?
A. NFPA 1 is not part of the Minnesota fire code framework
B. The 2015 edition permanently fixed by statute
C. The edition currently adopted by Minnesota Administrative Rules, Chapter 7511
D. The most recent edition published by NFPA regardless of state adoption
Correct Answer: C
Rationale:
Minnesota Administrative Rules Chapter 7511 adopts the State Fire Code, which
references specific NFPA editions. The adopted edition is determined by
rulemaking, not automatically the latest NFPA publication. Contractors must
verify which edition is currently in effect.
, Q3. Question 3 of 150
A journeyman sprinkler fitter is installing a sprinkler system in a warehouse
classified as Ordinary Hazard Group 2. The design must meet the density and area
requirements from NFPA 13. What is the minimum design density for this hazard
classification?
A. 0.20 gpm per square foot over 2,500 square feet of design area
B. 0.20 gpm per square foot over 1,500 square feet of design area
C. 0.10 gpm per square foot over 1,500 square feet of design area
D. 0.15 gpm per square foot over 1,300 square feet of design area
Correct Answer: D
Rationale:
For Ordinary Hazard Group 2, NFPA 13 requires a minimum density of 0.20 gpm/sq
ft over a design area of 1,500 sq ft using the pipe schedule method. The
density and area differ from Light Hazard and Extra Hazard classifications, and
the specific values must be verified against the current NFPA 13 tables.
Q4. Question 4 of 150
An inspector is evaluating a sprinkler system in a manufacturing facility and notices
that the building has been reclassified from Ordinary Hazard Group 1 to Ordinary
Hazard Group 2 due to a change in the stored commodities. What is the primary
implication of this reclassification?
A. No changes are needed since the sprinkler system was already installed
B. Only the water supply needs to be upgraded without modifying the sprinkler
heads
C. The system can remain unchanged if the fire department approves
D. The sprinkler system design density must be increased to meet the new hazard
classification requirements
Correct Answer: B
Rationale:
When the hazard classification increases, the existing sprinkler system must be
evaluated to determine if it meets the higher density requirements. The design
density for OH2 is greater than OH1, so the system may need additional
sprinklers, larger piping, or increased water supply to comply.
TER EXAMINATION (THIS IS A COMBINATION OF TEST QUESTIONS I'VE ENCOUNTERED, DEVON'S CHEAT SHEET, AND A PILE OF TEST REVIEWS FROM PREVIOUS YEARS) GOOD LUCK!! 2026/2027
, Q5. Question 5 of 150
A project manager is reviewing the specifications for a sprinkler system in a new
retail store and sees a requirement for an NFPA 13 system rather than NFPA 13R. What
is the key distinction that determines NFPA 13 must be used instead of NFPA 13R?
A. NFPA 13R applies to all commercial buildings under 10,000 square feet
B. There is no difference between NFPA 13 and NFPA 13R in system design
C. NFPA 13 applies to commercial occupancies while NFPA 13R is limited to
residential occupancies up to four stories
D. NFPA 13 is for buildings taller than four stories regardless of use
Correct Answer: C
Rationale:
NFPA 13 covers the full range of sprinkler system installations for commercial,
industrial, and residential buildings, while NFPA 13R is specifically for
residential occupancies not exceeding four stories in height. A retail store
requires NFPA 13 because it is not a residential occupancy.
Q6. Question 6 of 150
A sprinkler fitter apprentice asks why a dry-pipe system is being installed in an
unheated storage building in Duluth instead of a wet-pipe system. What is the primary
reason for selecting a dry-pipe system in this application?
A. Dry-pipe systems require less maintenance than wet-pipe systems
B. Dry-pipe systems prevent water from freezing in the piping when ambient
temperatures drop below 40 degrees Fahrenheit
C. Dry-pipe systems provide faster response times than wet-pipe systems
D. Dry-pipe systems are less expensive to install in large buildings
Correct Answer: D
Rationale:
Dry-pipe systems are used in spaces where temperatures may fall below 40
degrees F, as water in wet-pipe systems would freeze and damage the piping. The
system remains pressurized with air or nitrogen until a sprinkler activates, at
which point water fills the piping. They are not faster or cheaper than wet
systems.
TER EXAMINATION (THIS IS A COMBINATION OF TEST QUESTIONS I'VE ENCOUNTERED, DEVON'S CHEAT SHEET, AND A PILE OF TEST REVIEWS FROM PREVIOUS YEARS) GOOD LUCK!! 2026/2027
MINNESOTA DEPARTMENT OF LABOR AND INDUSTRY
MINNESOTA JOURNEYMAN SPRINKLER FITTER EXAMINATION (THIS
IS A COMBINATION OF TEST QUESTIONS I'VE ENCOUNTERED,
DEVON'S CHEAT SHEET, AND A PILE OF TEST REVIEWS FROM
PREVIOUS YEARS) GOOD LUCK!! 2026/2027
SPRINKLER FITTER · Official Exam 2026/2027
150 75%% CERTIFIED
QUESTIONS PASSING SCORE RECERTIFICATION
TABLE OF CONTENTS
Section 1 Fire Sprinkler System Fundamentals and Codes Q1-30
Section 2 Piping, Fittings, and Hydraulic Calculations Q31-60
Section 3 Sprinkler Head Types, Placement, and Coverage Q61-90
Section 4 System Installation, Testing, and Inspection Q91-120
Section 5 Standpipe Systems, Special Hazards, and Minnesota Amendments Q121-150
Instructions: Select the single best answer for each question. This exam is designed for Minnesota
Journeyman Sprinkler Fitter certification preparation. Passing score: 75%% (113 questions correct).
TER EXAMINATION (THIS IS A COMBINATION OF TEST QUESTIONS I'VE ENCOUNTERED, DEVON'S CHEAT SHEET, AND A PILE OF TEST REVIEWS FROM PREVIOUS YEARS) GOOD LUCK!! 2026/2027
,SECTION 1 | FIRE SPRINKLER SYSTEM FUNDAMENTALS AND CODES | Q1-Q30 | MINNESOTA JOURNEYMAN SPRINKLER FITTER
EXAMINATION (THIS IS A 2026/2027
Q1. Question 1 of 150
A contractor is designing a wet-pipe sprinkler system for a newly constructed office
building in Minneapolis. The building owner asks which NFPA standard governs the
installation of automatic sprinkler systems. The contractor correctly references
which standard?
A. NFPA 13R
B. NFPA 13D
C. NFPA 25
D. NFPA 13
Correct Answer: B
Rationale:
NFPA 13 is the standard for the Installation of Sprinkler Systems and applies
to commercial and industrial occupancies. NFPA 13R covers residential
occupancies up to four stories, NFPA 13D covers one- and two-family dwellings,
and NFPA 25 covers inspection, testing, and maintenance.
Q2. Question 2 of 150
A sprinkler fitter is reviewing the Minnesota State Fire Code before beginning work
on a project in St. Paul. The state fire code adopts which edition of NFPA 1 as its
foundation?
A. NFPA 1 is not part of the Minnesota fire code framework
B. The 2015 edition permanently fixed by statute
C. The edition currently adopted by Minnesota Administrative Rules, Chapter 7511
D. The most recent edition published by NFPA regardless of state adoption
Correct Answer: C
Rationale:
Minnesota Administrative Rules Chapter 7511 adopts the State Fire Code, which
references specific NFPA editions. The adopted edition is determined by
rulemaking, not automatically the latest NFPA publication. Contractors must
verify which edition is currently in effect.
, Q3. Question 3 of 150
A journeyman sprinkler fitter is installing a sprinkler system in a warehouse
classified as Ordinary Hazard Group 2. The design must meet the density and area
requirements from NFPA 13. What is the minimum design density for this hazard
classification?
A. 0.20 gpm per square foot over 2,500 square feet of design area
B. 0.20 gpm per square foot over 1,500 square feet of design area
C. 0.10 gpm per square foot over 1,500 square feet of design area
D. 0.15 gpm per square foot over 1,300 square feet of design area
Correct Answer: D
Rationale:
For Ordinary Hazard Group 2, NFPA 13 requires a minimum density of 0.20 gpm/sq
ft over a design area of 1,500 sq ft using the pipe schedule method. The
density and area differ from Light Hazard and Extra Hazard classifications, and
the specific values must be verified against the current NFPA 13 tables.
Q4. Question 4 of 150
An inspector is evaluating a sprinkler system in a manufacturing facility and notices
that the building has been reclassified from Ordinary Hazard Group 1 to Ordinary
Hazard Group 2 due to a change in the stored commodities. What is the primary
implication of this reclassification?
A. No changes are needed since the sprinkler system was already installed
B. Only the water supply needs to be upgraded without modifying the sprinkler
heads
C. The system can remain unchanged if the fire department approves
D. The sprinkler system design density must be increased to meet the new hazard
classification requirements
Correct Answer: B
Rationale:
When the hazard classification increases, the existing sprinkler system must be
evaluated to determine if it meets the higher density requirements. The design
density for OH2 is greater than OH1, so the system may need additional
sprinklers, larger piping, or increased water supply to comply.
TER EXAMINATION (THIS IS A COMBINATION OF TEST QUESTIONS I'VE ENCOUNTERED, DEVON'S CHEAT SHEET, AND A PILE OF TEST REVIEWS FROM PREVIOUS YEARS) GOOD LUCK!! 2026/2027
, Q5. Question 5 of 150
A project manager is reviewing the specifications for a sprinkler system in a new
retail store and sees a requirement for an NFPA 13 system rather than NFPA 13R. What
is the key distinction that determines NFPA 13 must be used instead of NFPA 13R?
A. NFPA 13R applies to all commercial buildings under 10,000 square feet
B. There is no difference between NFPA 13 and NFPA 13R in system design
C. NFPA 13 applies to commercial occupancies while NFPA 13R is limited to
residential occupancies up to four stories
D. NFPA 13 is for buildings taller than four stories regardless of use
Correct Answer: C
Rationale:
NFPA 13 covers the full range of sprinkler system installations for commercial,
industrial, and residential buildings, while NFPA 13R is specifically for
residential occupancies not exceeding four stories in height. A retail store
requires NFPA 13 because it is not a residential occupancy.
Q6. Question 6 of 150
A sprinkler fitter apprentice asks why a dry-pipe system is being installed in an
unheated storage building in Duluth instead of a wet-pipe system. What is the primary
reason for selecting a dry-pipe system in this application?
A. Dry-pipe systems require less maintenance than wet-pipe systems
B. Dry-pipe systems prevent water from freezing in the piping when ambient
temperatures drop below 40 degrees Fahrenheit
C. Dry-pipe systems provide faster response times than wet-pipe systems
D. Dry-pipe systems are less expensive to install in large buildings
Correct Answer: D
Rationale:
Dry-pipe systems are used in spaces where temperatures may fall below 40
degrees F, as water in wet-pipe systems would freeze and damage the piping. The
system remains pressurized with air or nitrogen until a sprinkler activates, at
which point water fills the piping. They are not faster or cheaper than wet
systems.
TER EXAMINATION (THIS IS A COMBINATION OF TEST QUESTIONS I'VE ENCOUNTERED, DEVON'S CHEAT SHEET, AND A PILE OF TEST REVIEWS FROM PREVIOUS YEARS) GOOD LUCK!! 2026/2027
