ALABAMA (AL) DRAINAGE & CULVERT CONTRACTOR PRACTICE EXAM LATEST QUESTIONS
AND CORRECT ANSWERS GRADE A
**1. According to Alabama state regulations, what is the minimum required bond amount
for a Drainage & Culvert contractor?**
A) $5,000
B) $10,000
C) $15,000
D) $20,000
**Answer: B**
**Explanation:** Alabama Code § 34-14-10 requires a minimum $10,000 surety bond for
drainage and culvert contractors licensed by the Alabama Licensing Board for General
Contractors.
**2. Which Alabama state agency regulates stormwater management during construction
activities?**
A) Alabama Department of Environmental Management (ADEM)
B) Alabama Department of Transportation (ALDOT)
C) Alabama Soil and Water Conservation Committee
D) All of the above
**Answer: D**
**Explanation:** All three agencies have regulatory authority over stormwater
management, with ADEM administering the NPDES permit program, ALDOT having road
construction standards, and the Conservation Committee overseeing erosion control.
,**3. What is the minimum required pipe cover for culverts under unpaved roads according
to ALDOT standards?**
A) 6 inches
B) 12 inches
C) 18 inches
D) 24 inches
**Answer: B**
**Explanation:** ALDOT Standard Specifications typically require minimum 12 inches of
cover for culverts under unpaved roads, with 24 inches for paved roads.
**4. According to Alabama regulations, what is the maximum allowable velocity for unlined
drainage ditches in sandy soil?**
A) 1.5 feet per second
B) 2.0 feet per second
C) 2.5 feet per second
D) 3.0 feet per second
**Answer: B**
**Explanation:** Alabama Erosion and Sediment Control Handbook recommends
maximum 2.0 fps for sandy soils to prevent erosion.
**5. Which type of pipe is NOT approved for permanent storm drainage installations in
Alabama?**
A) Corrugated polyethylene
B) Reinforced concrete
C) PVC Schedule 40
,D) Corrugated metal with asphalt coating
**Answer: C**
**Explanation:** PVC Schedule 40 is typically not approved for permanent storm drainage;
SDR 35 or stronger PVC is required for structural reasons.
**6. What is the minimum required slope for drainage pipes according to ALDOT
standards?**
A) 0.3%
B) 0.5%
C) 1.0%
D) 2.0%
**Answer: B**
**Explanation:** ALDOT typically requires minimum 0.5% slope (0.5 feet per 100 feet) for
drainage pipes to ensure self-cleaning velocity.
**7. According to Alabama regulations, what is the maximum depth for trench excavation
without shoring in stable soil?**
A) 4 feet
B) 5 feet
C) 6 feet
D) 8 feet
**Answer: B**
**Explanation:** OSHA and Alabama regulations allow maximum 5-foot depth without
shoring in Type A or B soils under certain conditions.
, **8. Which of the following requires a NPDES permit in Alabama?**
A) All drainage projects over 1 acre
B) Projects disturbing more than 1 acre
C) Only projects near waterways
D) Projects over 5 acres only
**Answer: B**
**Explanation:** ADEM requires NPDES permits for construction activities disturbing 1
acre or more of land.
**9. What is the minimum required thickness for galvanized corrugated metal pipe (CMP)
under roads in Alabama?**
A) 16 ga
B) 14 ga
C) 12 ga
D) 10 ga
**Answer: A**
**Explanation:** ALDOT typically requires minimum 16 ga galvanized CMP for most
applications, with thicker gauges for higher loads or corrosive conditions.
**10. According to Alabama regulations, how often must erosion control measures be
inspected?**
A) Daily
B) Weekly
C) After each rain event
AND CORRECT ANSWERS GRADE A
**1. According to Alabama state regulations, what is the minimum required bond amount
for a Drainage & Culvert contractor?**
A) $5,000
B) $10,000
C) $15,000
D) $20,000
**Answer: B**
**Explanation:** Alabama Code § 34-14-10 requires a minimum $10,000 surety bond for
drainage and culvert contractors licensed by the Alabama Licensing Board for General
Contractors.
**2. Which Alabama state agency regulates stormwater management during construction
activities?**
A) Alabama Department of Environmental Management (ADEM)
B) Alabama Department of Transportation (ALDOT)
C) Alabama Soil and Water Conservation Committee
D) All of the above
**Answer: D**
**Explanation:** All three agencies have regulatory authority over stormwater
management, with ADEM administering the NPDES permit program, ALDOT having road
construction standards, and the Conservation Committee overseeing erosion control.
,**3. What is the minimum required pipe cover for culverts under unpaved roads according
to ALDOT standards?**
A) 6 inches
B) 12 inches
C) 18 inches
D) 24 inches
**Answer: B**
**Explanation:** ALDOT Standard Specifications typically require minimum 12 inches of
cover for culverts under unpaved roads, with 24 inches for paved roads.
**4. According to Alabama regulations, what is the maximum allowable velocity for unlined
drainage ditches in sandy soil?**
A) 1.5 feet per second
B) 2.0 feet per second
C) 2.5 feet per second
D) 3.0 feet per second
**Answer: B**
**Explanation:** Alabama Erosion and Sediment Control Handbook recommends
maximum 2.0 fps for sandy soils to prevent erosion.
**5. Which type of pipe is NOT approved for permanent storm drainage installations in
Alabama?**
A) Corrugated polyethylene
B) Reinforced concrete
C) PVC Schedule 40
,D) Corrugated metal with asphalt coating
**Answer: C**
**Explanation:** PVC Schedule 40 is typically not approved for permanent storm drainage;
SDR 35 or stronger PVC is required for structural reasons.
**6. What is the minimum required slope for drainage pipes according to ALDOT
standards?**
A) 0.3%
B) 0.5%
C) 1.0%
D) 2.0%
**Answer: B**
**Explanation:** ALDOT typically requires minimum 0.5% slope (0.5 feet per 100 feet) for
drainage pipes to ensure self-cleaning velocity.
**7. According to Alabama regulations, what is the maximum depth for trench excavation
without shoring in stable soil?**
A) 4 feet
B) 5 feet
C) 6 feet
D) 8 feet
**Answer: B**
**Explanation:** OSHA and Alabama regulations allow maximum 5-foot depth without
shoring in Type A or B soils under certain conditions.
, **8. Which of the following requires a NPDES permit in Alabama?**
A) All drainage projects over 1 acre
B) Projects disturbing more than 1 acre
C) Only projects near waterways
D) Projects over 5 acres only
**Answer: B**
**Explanation:** ADEM requires NPDES permits for construction activities disturbing 1
acre or more of land.
**9. What is the minimum required thickness for galvanized corrugated metal pipe (CMP)
under roads in Alabama?**
A) 16 ga
B) 14 ga
C) 12 ga
D) 10 ga
**Answer: A**
**Explanation:** ALDOT typically requires minimum 16 ga galvanized CMP for most
applications, with thicker gauges for higher loads or corrosive conditions.
**10. According to Alabama regulations, how often must erosion control measures be
inspected?**
A) Daily
B) Weekly
C) After each rain event
