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Louisiana Pile Driving Contractor — Practice Exam

What This Practice Exam Covers

The Louisiana Pile Driving licensing exam is 50 questions, 120 minutes, passing score 70%. That means you need to answer at least 35 questions correctly.

Two practice options are available here:

Free practice exam — 10 questions per attempt, drawn from a limited pool. Retake it as many times as you want. It gives you a feel for the question format and difficulty before you commit to serious prep.

Full practice exam — 50 questions, 120-minute timer, mirrors the real exam exactly. Questions are pulled from a pool of 296+ items, so every attempt delivers a different mix. No duplicate exams. Topics and question counts match what the official test provider specifies. This is the tool to use when you're ready to find out where you actually stand.

Start with the free exam to get oriented. Use the full exam to measure readiness.

What You'll Be Tested On

Pile and Caisson Drilling and Foundation Preparation — 30 of 50 questions

This is the bulk of your exam. Sixty percent of your score comes from here. Study it first, study it hardest.

Pile types and classification. Know timber, concrete (precast and prestressed), steel (pipe and H-pile), composite, and sheet piles — their applications, limitations, and what makes one appropriate over another. The Construction Equipment Guide, Chapter 17 covers timber pile quality and treatment, and precast-prestressed concrete piles in detail.

Pile-driving hammers and equipment selection. Single-acting, double-acting, diesel, vibratory — know how each works and when to use it. Hammer selection criteria from Construction Planning, Equipment, and Methods, Chapter 17 appear directly in exam questions. Vibratory hammers are a common topic, particularly for sheet pile installation in Louisiana's soft, saturated soils.

Resistance to penetration. You must distinguish skin friction from end-bearing piles — not just define them, but understand which soil conditions produce which behavior. Construction Planning, Equipment, and Methods, Chapter 17, Resistance of Piles to Penetration is the primary reference.

Site investigation and test pile programs. Expect questions on what a test pile program establishes and how bearing capacity is determined from field data. Construction Planning, Equipment, and Methods, Chapter 17, Site Investigation and Test Pile Program is the source.

Caisson construction and compressed-air work. OSHA 29 CFR 1926.803 is tested directly — multiple subsections appear in the question bank, including §1926.803(b)(3), §1926.803(e)(2), §1926.803(e)(3), §1926.803(e)(5), §1926.803(g)(1)(xvii), and §1926.803(g)(2)(i). Know medical lock requirements, decompression procedures, and air supply standards cold.

Cofferdam design and safety. Expect questions on installation sequence, bracing, and OSHA requirements under 1926.

Concrete — 8 of 50 questions

Eight questions, but they cover a wide range of material. Don't skip this section.

Mix proportioning. Cement types, water-cementitious ratio, aggregate gradation, admixtures. Know what each component does to workability and strength.

Field testing. Slump, air content, unit weight, compressive strength cylinders — you need to know ASTM procedures and what the test results indicate. The Contractor's Guide to Quality Concrete Construction is the primary source for these topics.

Placement and consolidation. Methods (pump, bucket, chute, conveyor) and vibrator use. Know the rules for vibrator insertion spacing and how consolidation failures show up. The Contractor's Guide to Quality Concrete Construction, Page 139 addresses placement directly.

Formwork. Lateral pressure, shoring requirements, stripping criteria. Concrete unit weight and pour rate drive lateral pressure calculations — be ready to calculate.

Reinforcement. Bar identification, cover requirements, welded wire reinforcement, fiber reinforcement. The Contractor's Guide to Quality Concrete Construction, Chapter 6, Table 6.3 covers ACI 318 minimum cover requirements.

Hot and cold weather concreting. Know temperature thresholds and protective measures. Common field problems — bleeding, segregation, plastic shrinkage cracking — are fair game.

General Knowledge — 6 of 50 questions

Estimating and bidding. Excavation quantity calculations (bank vs. loose yards), surface area, volume. Pipe and Excavation Contracting, Chapter 9 and Construction Equipment Guide, Chapter 3 are key references.

Equipment economics. Ownership costs, operating costs, fuel, lubricants, depreciation, repairs. Construction Equipment Guide, Chapter 2 covers all of these, with specific tables you need to know.

Labor burden and markup. Calculate loaded labor rates and apply overhead and profit correctly.

Productivity and correction factors. Crew output under varying conditions — soil type, depth, weather. Be ready to do the arithmetic quickly.

Bonding. Bid, performance, and payment bonds — know the difference and when each is required.

Plans and surveying. Grade calculations, cut and fill, cross-section reading.

Safety (OSHA) — 6 of 50 questions

PPE for pile driving. Hard hats, hearing protection, fall protection — know the requirements specific to pile operations.

Fall protection. Guardrail, safety net, and personal fall arrest system criteria.

Crane and pile driver safety. Subpart CC requirements for crane operations at pile driving sites.

Excavation and cofferdam safety. Tie directly to the OSHA 1926.800 series — §1926.800(q)(6) and §1926.801(a) and (d) appear in the question bank.

Noise exposure. Pile driving is one of the loudest construction operations. Know permissible exposure limits and hearing conservation program triggers.

Worked Sample Questions

Question 1 — Pile and Caisson: Excavation Footprint

A figure (EX-3) shows a footing with base dimensions of 44 ft × 28 ft and 2-ft working space on each side. What is the excavated footprint at grade?

• A. 1,536 sq ft
• B. 1,380 sq ft
• C. 1,696 sq ft
• D. 1,232 sq ft

Correct Answer: A

Add working space to both dimensions: (44 + 2 + 2) × (28 + 2 + 2) = 48 × 32 = 1,536 sq ft. The error most candidates make is adding 2 ft to only one side of each dimension instead of both. Working space is always added to both ends of both dimensions.

Source: Pipe and Excavation Contracting — Ch. 9, Estimating Surface Excavation (bank vs loose yards)

Question 2 — Concrete: CMU Courses and Block Count

A figure (FN-5) shows a 4-ft wall of 8-inch concrete masonry block. A course of 8-inch block lays 8 inches high (with mortar, three courses = 2 ft). The wall is 32 ft long. How many courses make up the 4-ft wall, and how many blocks per course?

• A. 6 courses; 24 blocks per course
• B. 8 courses; 24 blocks per course
• C. 6 courses; 16 blocks per course
• D. 4 courses; 24 blocks per course

Correct Answer: A

Courses: 3 courses per 2 ft, so 4 ft ÷ (2/3 ft per course) = 6 courses. Blocks per course: a standard 8-inch block covers 16 inches (1.33 ft) in length; 32 ft ÷ (4/3 ft per block) = 24 blocks. Both halves of this question require a separate calculation — missing one drops you to the wrong answer.

Source: Carpentry and Building Construction — Ch. 10, Estimating Footings, Foundation Walls and Concrete Block

Question 3 — General Knowledge: Crew Sizing

A crew installs 1,200 sq ft per day with a 4-person crew (300 sq ft/worker/day). A job is 9,600 sq ft with only 7 days available due to weather. How many extra workers are needed?

• A. 1
• B. 3
• C. 2
• D. 0

Correct Answer: A

Required daily output: 9,600 ÷ 7 = 1,371 sq ft/day. Workers needed: 1,371 ÷ 300 = 4.57, round up to 5. Extra workers: 5 − 4 = 1. Don't round down — you can't do fractional labor.

How to Read Your Score

Passing is 70% — 35 correct out of 50.

Your first practice score is a diagnostic, not a verdict. Most people score lower on their first attempt than they will after focused study. That's normal and expected. What matters is what your score tells you about where to spend your time.

Use the topic breakdown. If you're scoring well on General Knowledge (6 questions) but weak on Pile and Caisson (30 questions), that trade-off hurts you badly. A five-point gain on the heaviest topic is worth far more than a five-point gain on the lightest.

If you're scoring between 70 and 80 percent on practice, you're in range — but close to the line is not comfortable. A few unlucky questions on the real exam can drop you below passing. Aim for 80%+ on practice before you sit.

If you're below 65%, identify the topic areas dragging your score down and work through the source references systematically. Then retake the full practice exam.

Where Candidates Lose Points

Compressed-air and caisson code questions. OSHA 1926.803 has multiple subsections in this question bank. Candidates mix up decompression tables, medical lock requirements, and air supply rules. Know the specific subsections, not just the general topic.

Hammer selection calculation errors. The question gives you soil conditions and pile type — you have to pick the right hammer and justify it with numbers. Skipping the calculation and guessing on "feel" costs points.

Excavation quantity arithmetic. Adding working space to only one side of a dimension is the single most common arithmetic error on footprint and volume questions. Double-check every excavation problem.

CMU and formwork questions. Candidates mix up linear feet, square feet, and block counts. Slow down, label your units, and calculate each part separately.

Noise exposure limits. People know pile driving is loud — they don't always know the specific permissible exposure limits OSHA requires. This is a detail question, not a concept question.

Time management. Thirty pile-and-caisson questions plus calculations in 120 minutes leaves about 2.4 minutes per question. Multi-step calculation questions can eat 4–5 minutes if you're not careful. Practice working quickly.

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