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Alabama Sitework Contractor Practice Exam

What This Practice Exam Covers

The Alabama Sitework Contractor licensing exam is 40 questions, 120 minutes, and you need a 70% to pass — that's 28 correct answers out of 40.

This practice exam gives you two options.

Free practice exam: 10 questions per attempt, pulled from a limited pool. You can retake it as many times as you want. It's a good way to get a feel for the question style and see what you're up against before committing further.

Full practice exam (paid): 40 questions, 120-minute timer — same format as the real thing. Questions are drawn from a pool of 262+ items, so every attempt gives you a different mix. No two exams are identical. Questions map directly to the six topic areas specified by the official test provider. If you're serious about passing, this is the tool that gives you enough exposure to actually prepare.

Start with the free exam. If you're scoring well and feeling confident, great. If not, the full exam is where you do the real work.

What You'll Be Tested On

The exam covers six topic areas. Here's what each one actually demands.

Estimating and Plan Reading — 4 items

Four questions doesn't sound like much, but the math has to be right. You need to calculate labor burden (the true cost of an employee beyond base wages), estimate material quantities from takeoffs, and fold in subcontractor bids correctly. You'll also need to know how direct and indirect overhead differ — indirect overhead is your shop, office, and time not charged to a single job. Markup questions require you to understand profit, contingency, and escalation as separate line items, not one combined number. Bonding is also tested: know the difference between a bid bond, performance bond, payment bond, and maintenance bond and when each one applies.

Equipment and Technique — 6 items

Six questions on backhoes, excavators, and how they actually work. You need to know backhoe components by name and how the hydraulic system operates. The exam tests digging cycle steps — crowd, swing, dump, return — and how to calculate production rates from cycle time and bucket capacity. Know the difference between wheeled and track backhoes, especially that a track machine rotates a full 360 degrees while a wheeled machine is limited to 180 degrees. Track excavator cycle times are tested separately. Hard digging techniques and how to work around existing underground crosslines without damaging them are also covered.

Compaction — 10 items

This is the heaviest section. Ten questions means you cannot afford gaps here. Know both Proctor test methods: Standard T-99 and Modified T-180, what they measure, and when each is used. Understand optimum moisture content — too dry and the soil won't compact; too wet and you lose density. The nuclear density gauge is tested for operation and testing procedure. Know the difference between puddling (flooding granular soils to settle them) and weight-and-vibration compaction. Lift thickness matters: the exam will ask how thick each layer should be before compacting. Know your compaction equipment types — plate compactors, jumping jacks, rollers — and how to calculate productivity. Over-compaction is real: extended vibration can actually loosen soil particles rather than densify them.

Soil Types — 10 items

Another 10-question section. The OSHA classification system is the core: Stable Rock, Type A, Type B, and Type C. You must know the unconfined compressive strength thresholds that separate these types. Type A is the strongest cohesive soil (≥1.5 tsf), Type C is the weakest or granular. Several conditions disqualify soil from Type A even if it's cohesive — fissuring, water seepage, vibration nearby, and previous disturbance are the main ones. Manual field tests are heavily tested: thumb penetration, plasticity, dry strength, and the drying test. Visual tests — checking for fissures, layering, and sloughing — are also fair game. Know the difference between cohesive and granular soils and how each behaves in an open cut.

Specialty Work (Blasting, Shoring) — 6 items

Six questions split between excavation protective systems and blasting. For shoring, know the three cave-in protection methods — sloping, benching, and shielding — and which soil types require which approach. Know shoring system components: timber shoring, aluminum hydraulic shoring, and trench shields. For blasting, the exam tests blaster qualifications under 29 CFR 1926, Subpart U, and the rules for storing, transporting, and handling explosives. Misfire procedures and post-blast inspection requirements are tested. These are procedural questions — the exam wants the specific rule, not general caution.

Safety — 4 items

Four focused questions on excavation safety. The competent person role is defined under 29 CFR §1926.32(f): that person must be able to identify hazards and has authority to stop work. Daily inspection requirements, access and egress (ladders required within 25 feet of workers in trenches deeper than 4 feet), and hazardous atmosphere testing are all tested. Underground utility location before digging — required under 29 CFR 1926, §1926.651(b)(2) — is also covered.

Worked Sample Questions

Question 1 — Compaction

Question: You are compacting backfill in a narrow trench using a hoe-mounted vibratory plate. After holding the plate on each section for about 20 seconds you achieve good results, but your operator decides to increase the dwell time to 40 seconds per section to "make sure." What is the most likely consequence?

• A. The soil temperature will rise excessively and cause moisture to evaporate too quickly
• B. The extended vibration may actually rattle soil particles apart and decrease density
• C. The density will increase proportionally with the additional dwell time
• D. There will be no measurable change in density regardless of dwell time

Correct Answer: B

More vibration is not always better. Once the soil particles have been arranged into their densest configuration, continued vibration starts working against you — it rattles those particles apart rather than packing them tighter. This is over-compaction, and it's a real problem with hoe-mounted vibratory plates. Doubling the dwell time won't double your density; it will reduce it and cut your production rate. (Source: Pipe and Excavation Contracting, Page 189)

Question 2 — Soil Types

Question: When water seeps into an excavation, it acts as a lubricant allowing large slabs of dirt to slip out of place. What is the primary hazard this creates?

• A. Dangerous cave-ins
• B. Soil erosion of adjacent properties
• C. Excessive dust generation
• D. Equipment corrosion

Correct Answer: A

Water reduces friction between soil layers. Once the bond breaks, mass movement happens fast — large slabs don't crumble slowly, they slip. That's a cave-in. This is why seeping water is one of the conditions that can disqualify soil from Type A classification, and why shoring is required wherever seeping water is present. (Source: Pipe and Excavation Contracting, Page 291)

Question 3 — Equipment and Technique

Question: Which of the following is a key difference between track backhoes and wheeled backhoes regarding equipment rotation?

• A. Wheeled backhoes can rotate 360 degrees while track backhoes are limited to 270 degrees
• B. Track backhoes can revolve a full 360 degrees while wheeled backhoes can only rotate 180 degrees
• C. Both types can rotate 360 degrees but track backhoes rotate faster
• D. Wheeled backhoes rotate 90 degrees and track backhoes rotate 180 degrees

Correct Answer: B

On a track excavator, the entire cab rotates with the turntable — a full 360 degrees. A wheeled backhoe is limited to 180 degrees of rotation. This affects how you position the machine, where you can dump spoil, and how efficiently you cycle. On a tight jobsite, it's a real operational difference. (Source: Pipe and Excavation Contracting, Page 165)

How to Read Your Score

Passing requires 70% — 28 out of 40 correct.

Your first practice attempt is a diagnostic, not a verdict. It tells you where your knowledge is solid and where it has gaps. Don't read too much into one score.

If you're scoring in the 80s or above across multiple attempts, you're in good shape. If you're scoring in the low 70s on practice, you're closer to the edge than you want to be on the real exam. The real exam won't have the same questions, and pressure adds up. Treat a near-passing practice score as a signal to keep working, not a reason to book the test.

Use the topic breakdown. Compaction and Soil Types together are 20 of the 40 questions — half the exam. If you're dropping points there, that's where to focus. Equipment and Technique and Specialty Work each carry 6 questions. If you're weak on cycle time calculations or blasting procedures, those are recoverable with targeted review. Don't spend equal time on every topic — spend it where the exam weight is heaviest.

Where Candidates Lose Points

Compaction math errors. Production rate calculations require you to track units carefully — buckets per hour, compacted cubic yards, lift thickness in inches vs. feet. One wrong conversion and the whole answer is off.

Soil type threshold confusion. Candidates mix up the unconfined compressive strength numbers for Type A vs. Type B. Know the thresholds cold — the exam will give you a strength value and ask you to classify the soil.

Missing disqualifiers for Type A. A cohesive soil can look like Type A but be disqualified by fissuring, nearby vibration, or water seepage. Candidates who only memorize the strength threshold miss these nuance questions.

Over-compaction. Many candidates assume more compaction effort always improves density. It doesn't — and the exam knows it.

Blasting procedures. These are specific regulatory rules from 29 CFR 1926, Subpart U. Candidates who study the concept but not the rule get the wrong answer. Details like misfire wait times and post-blast inspection steps are tested exactly.

Running short on time. At 3 minutes per question average, multi-step calculations in Estimating and Compaction can eat your clock. Do the calculation questions first or flag them and return — don't let one hard problem cost you three easy ones.

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