alabama,

Alabama (AL) Sewer Projects Contractor Practice Exam 100 Questions | Based on Alabama
Administrative Code & Industry Standards



1. According to Alabama law, what is the minimum experience required to qualify for a
sewer projects contractor license?

a) 2 years

b) 3 years

c) 4 years

d) 5 years

**ANSWER: c) 4 years**

**EXPLANATION:** Alabama requires at least 4 years of practical experience in sewer
construction under a licensed contractor.



2. Which agency regulates sewer contractors in Alabama?

a) Alabama Department of Environmental Management (ADEM)

b) Alabama Department of Public Health

c) Alabama Licensing Board for General Contractors

d) All of the above

**ANSWER: d) All of the above**

**EXPLANATION:** Multiple agencies regulate different aspects of sewer work in Alabama.



3. What is the minimum size for sewer main pipes in Alabama residential developments?

a) 6 inches

b) 8 inches

c) 10 inches

d) 12 inches

**ANSWER: b) 8 inches**

,**EXPLANATION:** Alabama standards typically require minimum 8-inch diameter for
sewer mains.



4. According to Alabama code, what is the minimum slope for 8-inch sewer pipe?

a) 0.25% (1/4 inch per foot)

b) 0.40% (1/2 inch per foot)

c) 1.0% (1 inch per foot)

d) 2.0% (2 inches per foot)

**ANSWER: b) 0.40% (1/2 inch per foot)**

**EXPLANATION:** Standard requirement for 8-inch sewer pipe is 0.40% minimum slope.



5. What type of pipe is most commonly used for gravity sewer mains in Alabama?

a) PVC Schedule 40

b) PVC SDR 35

c) Ductile Iron

d) HDPE

**ANSWER: b) PVC SDR 35**

**EXPLANATION:** PVC SDR 35 is standard for gravity sewer applications.



6. What is the minimum cover required over sewer pipes under streets in Alabama?

a) 24 inches

b) 30 inches

c) 36 inches

d) 48 inches

**ANSWER: c) 36 inches**

**EXPLANATION:** Minimum 36 inches of cover under roadways for protection.

,7. According to ADEM regulations, what is required before beginning sewer construction in
wetlands?

a) Standard permit

b) No disturbance allowed

c) Section 404 permit from Army Corps

d) Environmental impact study

**ANSWER: c) Section 404 permit from Army Corps**

**EXPLANATION:** Wetland work requires Section 404 Clean Water Act permit.



8. What is the purpose of a manhole in sewer systems?

a) Access for inspection and cleaning

b) Change in direction or slope

c) Connection point for laterals

d) All of the above

**ANSWER: d) All of the above**

**EXPLANATION:** Manholes serve multiple purposes in sewer systems.



9. What is the minimum inside diameter of a standard manhole in Alabama?

a) 36 inches

b) 48 inches

c) 60 inches

d) 72 inches

**ANSWER: b) 48 inches**

**EXPLANATION:** Standard manholes are typically 48-inch minimum inside diameter.

, 10. According to Alabama standards, what is the maximum spacing between manholes?

a) 300 feet

b) 400 feet

c) 500 feet

d) 600 feet

**ANSWER: b) 400 feet**

**EXPLANATION:** Maximum spacing typically 400 feet for maintenance access.



11. What type of bedding is required for sewer pipes in Alabama?

a) Class I (concrete)

b) Class II (crushed stone)

c) Class III (sand)

d) Class IV (select material)

**ANSWER: b) Class II (crushed stone)**

**EXPLANATION:** Class II crushed stone bedding is standard for sewer pipes.



12. What is the minimum deflection allowed in PVC sewer pipe joints?

a) 1 degree

b) 2 degrees

c) 3 degrees

d) 5 degrees

**ANSWER: d) 5 degrees**

**EXPLANATION:** Most PVC pipe allows up to 5 degrees deflection per joint.



13. According to Alabama code, how are sewer pipe joints tested?

a) Visual inspection only