Arizona B-1 General Commercial
Contractor Exam Questions And Correct
Answers (Verified Answers) Plus Rationales
2026 Q&A | Instant Download Pdf
1. What is the minimum slope required for a commercial roof drain
line?
a. 1/16 in. per ft
b. 1/8 in. per ft
c. 1/4 in. per ft
d. 1/2 in. per ft
The IPC requires a 1/4 in. per ft slope for most horizontal drainage
lines.
2. Which document establishes jobsite safety requirements for
contractors?
a. Uniform Mechanical Code
b. OSHA 1926 Construction Standards
c. International Residential Code
d. Arizona Registrar of Contractors Manual
OSHA 1926 governs safety on construction sites.
3. A commercial concrete slab requires a minimum compressive
strength of:
a. 2000 psi
, b. 2500 psi
c. 3000 psi
d. 3500 psi
Commercial slabs typically require at least 3000 psi concrete.
4. Who is responsible for ensuring subcontractors meet licensing
requirements?
a. Owner
b. Architect
c. Prime contractor
d. Inspector
The general contractor is legally responsible for hiring properly
licensed subs.
5. What is the maximum allowable moisture content for wood
framing at installation?
a. 10%
b. 12%
c. 19%
d. 25%
Standard framing lumber must be ≤19% moisture content.
6. What is the purpose of a performance bond?
a. To insure worker injuries
b. To guarantee the contractor completes the project
c. To cover design errors
d. To pay suppliers
A performance bond ensures the contractor fulfills contract
obligations.
, 7. Fire-rated commercial doors typically require a minimum rating of:
a. 20 minutes
b. 60 minutes
c. 30 minutes
d. 10 minutes
Common commercial door fire ratings are 60 minutes.
8. A contract change that adds work and time is a:
a. Field directive
b. Request for information
c. Change order
d. Addendum
Change orders formally modify cost, work, or schedule.
9. Rebar used in commercial concrete must comply with:
a. ASTM A615
b. ACI 318-05
c. ICC-ES
d. UMC
ASTM A615 governs deformed steel reinforcing bars.
10. What is the minimum width of an accessible route in
commercial buildings?
a. 30 in.
b. 36 in.
c. 32 in.
d. 40 in.
ADA requires 36 inches minimum.
11. When must a trench box be used?
a. At 3 ft
Contractor Exam Questions And Correct
Answers (Verified Answers) Plus Rationales
2026 Q&A | Instant Download Pdf
1. What is the minimum slope required for a commercial roof drain
line?
a. 1/16 in. per ft
b. 1/8 in. per ft
c. 1/4 in. per ft
d. 1/2 in. per ft
The IPC requires a 1/4 in. per ft slope for most horizontal drainage
lines.
2. Which document establishes jobsite safety requirements for
contractors?
a. Uniform Mechanical Code
b. OSHA 1926 Construction Standards
c. International Residential Code
d. Arizona Registrar of Contractors Manual
OSHA 1926 governs safety on construction sites.
3. A commercial concrete slab requires a minimum compressive
strength of:
a. 2000 psi
, b. 2500 psi
c. 3000 psi
d. 3500 psi
Commercial slabs typically require at least 3000 psi concrete.
4. Who is responsible for ensuring subcontractors meet licensing
requirements?
a. Owner
b. Architect
c. Prime contractor
d. Inspector
The general contractor is legally responsible for hiring properly
licensed subs.
5. What is the maximum allowable moisture content for wood
framing at installation?
a. 10%
b. 12%
c. 19%
d. 25%
Standard framing lumber must be ≤19% moisture content.
6. What is the purpose of a performance bond?
a. To insure worker injuries
b. To guarantee the contractor completes the project
c. To cover design errors
d. To pay suppliers
A performance bond ensures the contractor fulfills contract
obligations.
, 7. Fire-rated commercial doors typically require a minimum rating of:
a. 20 minutes
b. 60 minutes
c. 30 minutes
d. 10 minutes
Common commercial door fire ratings are 60 minutes.
8. A contract change that adds work and time is a:
a. Field directive
b. Request for information
c. Change order
d. Addendum
Change orders formally modify cost, work, or schedule.
9. Rebar used in commercial concrete must comply with:
a. ASTM A615
b. ACI 318-05
c. ICC-ES
d. UMC
ASTM A615 governs deformed steel reinforcing bars.
10. What is the minimum width of an accessible route in
commercial buildings?
a. 30 in.
b. 36 in.
c. 32 in.
d. 40 in.
ADA requires 36 inches minimum.
11. When must a trench box be used?
a. At 3 ft
