Florida LP Master Qualifier Exam Questions and
Answers 2026
INTRODUCTION:
This package is designed for journeyman plumbers seeking to pass the Florida Plumbing (LP)
Master Qualifier Examination in 2026. The 100 questions are based on the 2026 Florida Building
Code, Plumbing (7th Edition, 2026), the Florida Statutes Chapter 489 (Part I), and the Florida
Administrative Code Rules 61G4-15 & 16. The exam tests advanced knowledge of complex
plumbing system design, engineering principles, business management, project supervision, and
Florida-specific laws, rules, and codes for qualifying a plumbing contracting business.
QUESTIONS (100 TOTAL):
1. According to the 2026 Florida Building Code, Plumbing (Section 607), what is the required
minimum vertical separation between the bottom of a direct connection of an indirect waste
pipe from a food handling fixture and the flood level rim of the receptor?
A. 1 inch
B. 2 inches
C. 6 inches
D. 1 foot
Answer: B
Rationale: Florida Building Code, Plumbing 607.3 specifically mandates a minimum 2-inch air
gap for indirect waste pipes from food handling fixtures to prevent back-siphonage and
contamination. This is a critical public health provision.
2. When calculating the total drainage fixture unit (DFU) load for a 4-story apartment building
with 30 identical 1-BR units per floor to size the building sewer, which of the following values
from the Florida Plumbing Code Table 703.2 would you use for each bathroom group?
A. 5 DFU
B. 6 DFU
C. 8 DFU
D. 10 DFU
Answer: B
,Rationale: For a 1-BR apartment, the bathroom group (water closet, lavatory, bathtub/shower)
is assigned 6 DFU per Table 703.2. This is the standard value used in load calculations for multi-
family dwellings in Florida.
3. Under FS 489.105(3)(i), which of the following is a valid condition for the Master Qualifier's
license if they are no longer actively employed by the contracting company they qualified?
A. The license is void immediately.
B. The license remains active, and the qualifier can qualify up to 3 companies.
C. The qualifier must notify the CILB within 30 days, and the license becomes inactive until
reassigned.
D. The company has 120 days to hire a new qualifier before any penalties apply.
Answer: C
Rationale: Florida Statute 489.105(3)(i) requires a master qualifier to notify the CILB in writing
within 30 days of termination. Upon notification, the qualifier's license becomes inactive, and
the company cannot contract until a new qualifier is registered. This is a key compliance rule.
4. For a 3-inch diameter Schedule 40 PVC sanitary building drain installed under a building slab
in Central Florida, what is the required minimum slope per the 2026 FBC, Plumbing?
A. 1/8 inch per foot
B. 1/4 inch per foot
C. 1/2 inch per foot
D. 1 inch per foot
Answer: B
Rationale: Florida Building Code, Plumbing Table 704.1 specifies a minimum slope of 1/4 inch
per foot (2% slope) for a 3-inch diameter sanitary drain. This ensures adequate scouring velocity
for waste transport.
5. Under Florida Administrative Code Rule 61G4-15.011, what is the minimum amount of
working capital a plumbing contractor must demonstrate to maintain a business license?
A. $2,500
B. $5,000
C. $10,000
,D. $20,000
Answer: B
Rationale: FAC 61G4-15.011 requires Division I contractors (including plumbing) to maintain
$5,000 in working capital, demonstrated through financial statements or a bond. This ensures
financial viability to complete contracts and pay obligations.
6. According to the 2026 FBC, Plumbing Section 610.4, what is the maximum developed length
of a 2-inch diameter fixture drain for a lavatory with a 1-1/4 inch trap?
A. 3 feet
B. 5 feet
C. 6 feet
D. 8 feet
Answer: C
Rationale: Table 610.4 limits the developed length of a 2-inch fixture drain with a 1-1/4 inch
trap to 6 feet. This limit ensures proper venting and prevents trap seal loss due to excessive
friction and velocity.
7. Under FS 489.126(1)(a), what is the maximum penalty for a first-time unlicensed contracting
violation in Florida?
A. $500 fine only
B. $1,000 fine and/or up to 1 year imprisonment
C. $5,000 administrative fine and potential criminal misdemeanor charges
D. License suspension only with no monetary penalty
Answer: C
Rationale: Florida Statute 489.126(1)(a) classifies unlicensed contracting as a first-degree
misdemeanor punishable by up to $5,000 in administrative fines issued by the CILB, plus
criminal penalties including potential jail time. The administrative and criminal tracks operate
independently.
8. When sizing a Type L copper water service line for a 15-fixture residential building with 60
feet of developed length and 45 psi static pressure, which of the following methods must be
used per FBC, Plumbing Section 604?
, A. Uniform Plumbing Code Appendix A only
B. Florida specific Appendix A tables based on Hunter's Curve
C. Any method approved by the local plumbing inspector
D. Maximum velocity method only regardless of pressure
Answer: B
Rationale: Section 604.3 requires water pipe sizing using the Appendix A tables based on
Hunter's Curve fixture unit method, modified for Florida conditions. This accounts for local
water pressure, friction loss, and fixture demand patterns specific to the code jurisdiction.
9. According to FAC 61G4-16.002, how many continuing education hours must a plumbing
contractor complete biennially to renew their license?
A. 7 hours
B. 14 hours
C. 21 hours
D. 28 hours
Answer: B
Rationale: FAC 61G4-16.002 mandates 14 hours of continuing education during each biennial
renewal cycle, including 1 hour each of Florida law and workplace safety, and the remainder in
technical plumbing subjects. Failure to complete CE results in license delinquency.
10. Per FBC, Plumbing Section 608.16.10, what type of backflow prevention is required for lawn
irrigation systems connected to potable water supplies in Florida?
A. Atmospheric vacuum breaker only
B. Pressure vacuum breaker or reduced pressure principle backflow preventer
C. Double check valve assembly
D. No backflow protection required if using city water
Answer: B
Rationale: Section 608.16.10 requires either a pressure vacuum breaker (PVB) or reduced
pressure principle backflow preventer (RPZ) for irrigation systems, depending on the degree of
hazard. Florida DEP cross-connection control rules align with this, recognizing the high hazard of
chemical injection systems.
Answers 2026
INTRODUCTION:
This package is designed for journeyman plumbers seeking to pass the Florida Plumbing (LP)
Master Qualifier Examination in 2026. The 100 questions are based on the 2026 Florida Building
Code, Plumbing (7th Edition, 2026), the Florida Statutes Chapter 489 (Part I), and the Florida
Administrative Code Rules 61G4-15 & 16. The exam tests advanced knowledge of complex
plumbing system design, engineering principles, business management, project supervision, and
Florida-specific laws, rules, and codes for qualifying a plumbing contracting business.
QUESTIONS (100 TOTAL):
1. According to the 2026 Florida Building Code, Plumbing (Section 607), what is the required
minimum vertical separation between the bottom of a direct connection of an indirect waste
pipe from a food handling fixture and the flood level rim of the receptor?
A. 1 inch
B. 2 inches
C. 6 inches
D. 1 foot
Answer: B
Rationale: Florida Building Code, Plumbing 607.3 specifically mandates a minimum 2-inch air
gap for indirect waste pipes from food handling fixtures to prevent back-siphonage and
contamination. This is a critical public health provision.
2. When calculating the total drainage fixture unit (DFU) load for a 4-story apartment building
with 30 identical 1-BR units per floor to size the building sewer, which of the following values
from the Florida Plumbing Code Table 703.2 would you use for each bathroom group?
A. 5 DFU
B. 6 DFU
C. 8 DFU
D. 10 DFU
Answer: B
,Rationale: For a 1-BR apartment, the bathroom group (water closet, lavatory, bathtub/shower)
is assigned 6 DFU per Table 703.2. This is the standard value used in load calculations for multi-
family dwellings in Florida.
3. Under FS 489.105(3)(i), which of the following is a valid condition for the Master Qualifier's
license if they are no longer actively employed by the contracting company they qualified?
A. The license is void immediately.
B. The license remains active, and the qualifier can qualify up to 3 companies.
C. The qualifier must notify the CILB within 30 days, and the license becomes inactive until
reassigned.
D. The company has 120 days to hire a new qualifier before any penalties apply.
Answer: C
Rationale: Florida Statute 489.105(3)(i) requires a master qualifier to notify the CILB in writing
within 30 days of termination. Upon notification, the qualifier's license becomes inactive, and
the company cannot contract until a new qualifier is registered. This is a key compliance rule.
4. For a 3-inch diameter Schedule 40 PVC sanitary building drain installed under a building slab
in Central Florida, what is the required minimum slope per the 2026 FBC, Plumbing?
A. 1/8 inch per foot
B. 1/4 inch per foot
C. 1/2 inch per foot
D. 1 inch per foot
Answer: B
Rationale: Florida Building Code, Plumbing Table 704.1 specifies a minimum slope of 1/4 inch
per foot (2% slope) for a 3-inch diameter sanitary drain. This ensures adequate scouring velocity
for waste transport.
5. Under Florida Administrative Code Rule 61G4-15.011, what is the minimum amount of
working capital a plumbing contractor must demonstrate to maintain a business license?
A. $2,500
B. $5,000
C. $10,000
,D. $20,000
Answer: B
Rationale: FAC 61G4-15.011 requires Division I contractors (including plumbing) to maintain
$5,000 in working capital, demonstrated through financial statements or a bond. This ensures
financial viability to complete contracts and pay obligations.
6. According to the 2026 FBC, Plumbing Section 610.4, what is the maximum developed length
of a 2-inch diameter fixture drain for a lavatory with a 1-1/4 inch trap?
A. 3 feet
B. 5 feet
C. 6 feet
D. 8 feet
Answer: C
Rationale: Table 610.4 limits the developed length of a 2-inch fixture drain with a 1-1/4 inch
trap to 6 feet. This limit ensures proper venting and prevents trap seal loss due to excessive
friction and velocity.
7. Under FS 489.126(1)(a), what is the maximum penalty for a first-time unlicensed contracting
violation in Florida?
A. $500 fine only
B. $1,000 fine and/or up to 1 year imprisonment
C. $5,000 administrative fine and potential criminal misdemeanor charges
D. License suspension only with no monetary penalty
Answer: C
Rationale: Florida Statute 489.126(1)(a) classifies unlicensed contracting as a first-degree
misdemeanor punishable by up to $5,000 in administrative fines issued by the CILB, plus
criminal penalties including potential jail time. The administrative and criminal tracks operate
independently.
8. When sizing a Type L copper water service line for a 15-fixture residential building with 60
feet of developed length and 45 psi static pressure, which of the following methods must be
used per FBC, Plumbing Section 604?
, A. Uniform Plumbing Code Appendix A only
B. Florida specific Appendix A tables based on Hunter's Curve
C. Any method approved by the local plumbing inspector
D. Maximum velocity method only regardless of pressure
Answer: B
Rationale: Section 604.3 requires water pipe sizing using the Appendix A tables based on
Hunter's Curve fixture unit method, modified for Florida conditions. This accounts for local
water pressure, friction loss, and fixture demand patterns specific to the code jurisdiction.
9. According to FAC 61G4-16.002, how many continuing education hours must a plumbing
contractor complete biennially to renew their license?
A. 7 hours
B. 14 hours
C. 21 hours
D. 28 hours
Answer: B
Rationale: FAC 61G4-16.002 mandates 14 hours of continuing education during each biennial
renewal cycle, including 1 hour each of Florida law and workplace safety, and the remainder in
technical plumbing subjects. Failure to complete CE results in license delinquency.
10. Per FBC, Plumbing Section 608.16.10, what type of backflow prevention is required for lawn
irrigation systems connected to potable water supplies in Florida?
A. Atmospheric vacuum breaker only
B. Pressure vacuum breaker or reduced pressure principle backflow preventer
C. Double check valve assembly
D. No backflow protection required if using city water
Answer: B
Rationale: Section 608.16.10 requires either a pressure vacuum breaker (PVB) or reduced
pressure principle backflow preventer (RPZ) for irrigation systems, depending on the degree of
hazard. Florida DEP cross-connection control rules align with this, recognizing the high hazard of
chemical injection systems.
