Florida Certified Builder Exam —
Questions And Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A | Instant Download Pdf
1. What is the minimum ceiling height required by the Florida
Building Code for habitable rooms?
A. 6 ft 8 in
B. 7 ft
C. 7 ft 6 in
D. 8 ft
Habitable rooms must have a minimum ceiling height of 7 ft 6 in
under FBC.
2. Which soil type provides the lowest bearing capacity for shallow
foundations?
A. Gravel
B. Sand
C. Clay
D. Organic soils
Organic soils are unsuitable for structural support due to high
compressibility.
3. When installing a vapor barrier under a concrete slab, the barrier
should be placed:
A. Above the sand layer
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B. Directly beneath the slab
C. Above reinforcing steel
D. On top of insulation
FBC requires vapor barrier placement directly under the slab for
moisture control.
4. At what height must guardrails be installed on elevated surfaces?
A. 30 in
B. 36 in
C. 40 in
D. 48 in
Guards are required when drop exceeds 30 in, and guard height
must be at least 36 in.
5. What is the minimum compressive strength of concrete for
foundation walls?
A. 2000 psi
B. 2500 psi
C. 3000 psi
D. 3500 psi
2500 psi concrete is the minimum for foundations unless otherwise
specified.
6. The purpose of reinforcing steel in concrete is to:
A. Prevent shrinkage
B. Improve finish quality
C. Increase weight
D. Resist tensile forces
Concrete is weak in tension, so rebar provides tensile strength.
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7. Which document primarily governs construction safety
requirements?
A. FBC
B. NEC
C. OSHA standards
D. ASTM
OSHA governs workplace jobsite safety.
8. A builder must maintain records for worker payroll under Florida
law for:
A. 1 year
B. 3 years
C. 5 years
D. 7 years
Payroll documentation must be retained for three years.
9. What is the minimum slope for a standard asphalt shingle roof?
A. 1:12
B. 2:12
C. 4:12
D. 5:12
Most asphalt shingles require at least a 4:12 slope unless special
underlayment is used.
10. Which type of insurance covers injury to workers?
A. General liability
B. Builder’s risk
C. Workers’ compensation
D. Property insurance
Workers’ compensation provides coverage for employee injuries.
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