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100+ Free AL Tunnel Practice Questions

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2026 Statistics

Key Facts: AL Tunnel Exam

70%

Passing Score

PSI AL GC Bulletin

60 Q

Official Exam Questions

PSI AL GC Bulletin

2.5 hours

Time Allowed

PSI AL GC Bulletin

$96

PSI Exam Fee

PSI AL GC Bulletin

Open book

Exam Format

PSI AL GC Bulletin

Alabama AL Tunnel Contractor trade exam via PSI: 60 questions, 70% pass, 2 hours 30 minutes, fee $96. Open-book specialty classification under the Alabama Licensing Board for General Contractors (bulletin 1/23/26).

Sample AL Tunnel Practice Questions

Try these sample questions to test your AL Tunnel exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1OSHA 29 CFR 1926.800 Underground Construction applies to which of the following operations?
A.Any open trench for a building footing that is not connected to a tunnel
B.Construction of underground tunnels, shafts, chambers, and passageways, including cut-and-cover work that is physically connected to ongoing underground construction and covered so it creates underground conditions
C.Only finished tunnels after the lining is complete and mining has stopped
D.Underground electrical transmission and distribution line work covered by Subpart V
Explanation: 29 CFR 1926.800 covers construction of underground tunnels, shafts, chambers, and passageways. It also covers cut-and-cover excavations that are physically connected to ongoing underground construction and covered so they create underground conditions. Ordinary Subpart P excavation that is not connected to underground construction, and underground electrical T&D under Subpart V, are outside 1926.800.
2Which statement best describes microtunneling as used in ASCE construction guidelines?
A.An open-face hand-mined heading that miners enter on every shove
B.A drill-and-blast rock tunnel advanced by heading and bench
C.A remotely controlled, guided, pipe-jacked operation with a continuously supported face, in which personnel typically do not enter the tunnel during mining
D.A surface cut-and-cover box built from the top down
Explanation: Microtunneling is a remotely controlled, guided pipe-jacking method. The microtunnel boring machine keeps continuous support on the excavation face, usually with mechanical or fluid pressure, and crews typically do not enter the tunnel during mining. That combination of remote control, guidance, pipe jacking, and face support distinguishes microtunneling from open-shield pipe jacking and from cut-and-cover.
3In tunnel terminology, which definitions are correct?
A.Invert is the floor, crown is the top, and springline is the mid-height at the sides
B.Invert is the top of the lining, crown is the floor, and springline is the shaft collar
C.Invert is the TBM cutterhead, crown is the muck skip, and springline is the laser
D.Invert is the access shaft, crown is the reception shaft, and springline is the jacking frame
Explanation: The invert is the floor or inside bottom of the tunnel. The crown is the top. The springline is at mid-height on each side, where the arch typically begins. Alignment, drainage grade, and lining geometry are all described with these terms.
4When is cut-and-cover tunneling typically selected?
A.For deep rock tunnels far below existing streets
B.Only when a slurry TBM cannot be delivered to the site
C.Only for vertical shafts, never for horizontal tunnels or stations
D.For relatively shallow tunnels or stations that can be excavated from the surface, built as a structure, and then backfilled
Explanation: Cut-and-cover excavates from the surface, builds the tunnel or station structure in the open excavation, and backfills over it. It is common for shallow alignments and station boxes. Deep rock tunnels are usually mined rather than opened from the street.
5In tunneling, what is muck?
A.Grout injected behind a segmental lining
B.Excavated material removed from the heading by rail, conveyor, slurry circuit, or similar means
C.Compressed air used to hold a soft-ground face
D.The steel skin of a shielded TBM
Explanation: Muck is the excavated soil or rock removed from the heading. Depending on the method, it may leave by mine cars, conveyor, or a slurry circuit. Managing muck volume, haul, and disposal is a core tunnel-production task.
6How does pipe jacking advance the product pipe?
A.By pulling the pipe string from the reception shaft with a winch only
B.By floating the pipe into an open trench and then backfilling
C.By hydraulic jacks in a drive shaft that push pipe strings behind the shield or machine; long drives may use intermediate jacking stations
D.By spinning the pipe as an auger that remains in the ground as the product
Explanation: In pipe jacking, hydraulic jacks in the drive (jacking) shaft thrust the pipe string behind a shield or microtunnel machine. On long drives, intermediate jacking stations are added in the pipe string so jacking force is distributed and pipe capacity is not exceeded.
7What is the primary purpose of probe drilling ahead of a tunnel face?
A.To detect water, voids, or gas before the heading advances into them
B.To replace survey control so lasers are no longer needed
C.To measure concrete slump in the invert pour
D.To determine the legal One-Call ticket expiration date
Explanation: Probe or probe-ahead holes are drilled in front of the face to find water, voids, weak ground, or gas before the heading reaches them. The results let the crew grout, change support, or adjust ventilation before a sudden inflow or gas release.
8What lining is typically erected immediately behind a shielded TBM in soft ground?
A.Only timber sets with no rings
B.Unreinforced brick laid from the surface
C.A poured invert placed before the TBM is launched
D.Precast concrete segmental rings, often with gaskets for watertightness
Explanation: A shielded TBM commonly erects precast segmental rings inside the tail shield as it advances. Gaskets on the segment joints provide watertightness. The rings become both the initial and often the final lining as annular grout is pumped behind them.
9On a mined tunnel project, shafts are most commonly used for which combination of functions?
A.Only as finished passenger stations
B.Access, muck removal, ventilation, and hoisting, with temporary lining as required
C.Only to store unused explosives at the face
D.Only as a location for the concrete batch plant mixer drum
Explanation: Shafts give personnel and equipment access, a path to hoist or skip muck, and a route for ventilation. They are temporarily lined or supported while open. Stations, magazines, and batch plants are separate facilities even if a shaft later becomes part of a permanent structure.
10Under OSHA 1926.800, which statement about open flames underground is correct?
A.Open fires are allowed anywhere underground as long as self-rescuers are issued
B.Gasoline-fueled open-flame heaters are the preferred method to dry a heading
C.Open flames and fires are prohibited underground except permitted welding, cutting, or other hot work
D.Open flames are prohibited only in gassy headings and are unrestricted elsewhere
Explanation: OSHA 1926.800 prohibits open flames and fires underground except for permitted welding, cutting, or other hot work. Even then, gas checks, ventilation, and (in gassy operations) a fire watch apply. Self-rescuers do not authorize open fires.

About the AL Tunnel Exam

The Alabama Tunnel Contractor Examination is a classification trade examination administered by PSI for the Alabama Licensing Board for General Contractors. The official open-book exam has 60 questions, a 70% (42 of 60 correct) passing standard, and 150 minutes allowed. PSI examination fee is $96 per attempt (bulletin updated 1/23/26). This English-language MCQ bank is a study aid for the trade knowledge on the official content outline; it is not an official PSI form, does not replace the required Business & Law exam for primes, and is not a substitute for board-approved experience or the official open-book examination.

Questions

60 scored questions

Time Limit

150 minutes

Passing Score

70%

Exam Fee

$96 (PSI Services LLC (for Alabama Licensing Board for General Contractors))

AL Tunnel Exam Content Outline

37%

Boring and Tunneling

TBM, jacked tunnel, microtunneling, and lining

17%

Concrete

Tunnel concrete mixtures and placement

10%

Sitework

Portal, shaft, and surface sitework

8%

Concrete Reinforcement

Placing reinforcing bars and support

8%

Hoisting and Rigging

Shaft hoisting and underground rigging

8%

Safety

OSHA 1926.800 underground construction

3%

One Call

Alabama 811 / Act 94-487

3%

Erosion and Sedimentation Control

Stormwater and sediment controls

3%

Estimating

Underground quantity takeoff

2%

Survey and Layout

Alignment, invert, and control

How to Pass the AL Tunnel Exam

What You Need to Know

  • Passing score: 70%
  • Exam length: 60 questions
  • Time limit: 150 minutes
  • Exam fee: $96

Keys to Passing

  • Work through all 100 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

AL Tunnel Study Tips from Top Performers

1Study only the approved references listed for Tunnel Contractor in the current PSI Alabama General Contractors bulletin
2Practice open-book navigation with permanent tabs and indexes before test day
3Drill OSHA 29 CFR 1926.800 underground construction and 1926 Subpart P excavation topics
4Work quantity takeoff, concrete volume, and alignment problems under timed conditions
5Confirm Board eligibility and classification scope on genconbd.alabama.gov before scheduling with PSI

Frequently Asked Questions

How many questions are on the AL Tunnel Contractor exam?

The official PSI trade examination has 60 scored questions (plus possible experimental items). Passing is 70% (42 of 60 correct) within 150 minutes.

How much does the AL Tunnel Contractor exam cost?

PSI lists $96 per examination registration for this Alabama general contractor classification exam (Candidate Information Bulletin updated 1/23/26). License application fees to the Board are separate.

Is the Alabama specialty contractor exam open book?

Yes. PSI administers these classification exams as open book. Only the bulletin-listed approved references are allowed; temporary tabs like Post-it notes are prohibited.

Do I still need the Business and Law exam?

Prime contractor applicants must also pass the Alabama Business & Law examination (50 questions, 70%, 120 minutes). Reciprocity may waive a trade exam in some cases but does not waive Business & Law.