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Key Facts: AZ ROC CR-66 Seal Coating Exam

30 Questions

Official Question Count

PSI Candidate Information Bulletin

75 Minutes

Time Limit

PSI Candidate Information Bulletin

70%

Passing Score

Arizona Registrar of Contractors

$66

Exam Fee

PSI Services LLC

Open Book Computerized MCQ

Exam Format

PSI / AZ ROC Guidelines

100 Questions

Practice Question Bank

OpenExamPrep Practice Bank

The Arizona ROC CR-66 Seal Coating Examination consists of 30 scored multiple-choice questions administered in a 75-minute open-book PSI computer-delivered session with a 70% passing threshold ($66 exam fee). This online practice question bank provides 100 practice questions with detailed explanations covering Asphalt and Paving (14 of 30 official items), Sealcoating (8), Asphalt Markings (5), and OSHA Safety (3). It is an independent English-language study aid written to the published PSI content outline, not official PSI items and not a simulation of the 30-item exam form.

Sample AZ ROC CR-66 Seal Coating Practice Questions

Try these sample questions to review concepts for the AZ ROC CR-66 Seal Coating exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1What is the standard minimum relative compaction requirement for subgrade soil prior to placing aggregate base course for flexible pavement?
A.95% of maximum dry density (ASTM D698 / D1557)
B.85% of maximum dry density (ASTM D698 / D1557)
C.90% of field wet density
D.100% of uncompacted loose weight
Explanation: Subgrade preparation for flexible pavement structures standardly requires compacting the top 6 inches of subgrade soil to a minimum of 95% of maximum dry density as determined by Proctor laboratory testing (ASTM D698 standard or ASTM D1557 modified Proctor). Proper subgrade compaction prevents rutting, differential settlement, and premature pavement structural failure.
2What is the primary purpose of proof rolling a completed soil subgrade before placing aggregate base?
A.To identify soft spots, pumping, or yielding areas under heavy wheel loads
B.To seal the subgrade surface against rainfall penetration
C.To measure the moisture content of the subgrade soil
D.To apply a liquid asphalt prime coat evenly across the soil
Explanation: Proof rolling involves driving a heavily loaded vehicle (typically a 10 to 20-ton loaded tandem axle dump truck or heavy pneumatic roller) across the subgrade to visually identify yielding, soft pockets, pumping, or rutting. Unstable areas detected during proof rolling must be undercut, aerated, or stabilized before aggregate base placement.
3What is the maximum loose lift thickness recommended when placing and compacting Aggregate Base Course (ABC) to achieve uniform density?
A.6 inches
B.12 inches
C.18 inches
D.24 inches
Explanation: Standard paving specifications limit loose aggregate base lifts to a maximum thickness of 6 inches (or 8 inches with heavy vibratory rollers) to ensure compaction equipment can achieve required density through the full depth of the layer. Placing lifts thicker than 6 inches often leaves uncompacted, weak material at the bottom of the lift.
4A pavement contractor needs to pave a 900 square yard parking area with a 2-inch compacted layer of Hot Mix Asphalt (HMA). Assuming a standard asphalt compaction density of 110 lbs per square yard per inch of thickness, how many tons of HMA are required?
A.99 tons
B.88 tons
C.110 tons
D.125 tons
Explanation: Tonnage is calculated by multiplying the area in square yards by the thickness in inches and the unit weight rate: 900 sq yd * 2 inches * 110 lbs/sq yd/inch = 198,000 lbs. Dividing by 2,000 lbs per ton yields 99 tons.
5A contractor is laying hot mix asphalt on a rectangular parking lot measuring 150 feet long by 120 feet wide with a compacted thickness of 3 inches. Using an asphalt compacted density of 145 lbs per cubic foot, how many tons of asphalt should be ordered?
A.326.3 tons
B.275.0 tons
C.408.8 tons
D.489.4 tons
Explanation: First calculate area: 150 ft * 120 ft = 18,000 sq ft. Convert thickness to feet: 3 / 12 = 0.25 ft. Calculate volume: 18,000 sq ft * 0.25 ft = 4,500 cu ft. Multiply by density: 4,500 cu ft * 145 lbs/cu ft = 652,500 lbs. Convert to tons: 652,500 / 2,000 = 326.25 tons, rounded to 326.3 tons.
6What is the typical minimum recommended temperature of dense-graded Hot Mix Asphalt (HMA) at the time of delivery to the paver hopper?
A.275°F
B.200°F
C.150°F
D.375°F
Explanation: Standard dense-graded hot mix asphalt (HMA) using standard asphalt binders (such as PG 64-22 or PG 70-22) generally requires delivery and laydown temperatures between 275°F and 325°F. Delivering asphalt below 275°F leads to premature stiffening, screed dragging, poor compaction, and high air voids.
7Why must Hot Mix Asphalt (HMA) not be heated or delivered at temperatures exceeding 350°F during standard production?
A.It severely oxidizes and ages the asphalt binder, causing premature cracking and binder brittleness
B.It prevents the asphalt from bonding to aggregate particles
C.It causes the aggregate base to melt upon contact
D.It increases the moisture content in the aggregate mix
Explanation: Overheating hot mix asphalt above 350°F accelerates thermal oxidation of the asphalt binder. This burns off light oils, hardens the binder prematurely, reduces elasticity, and makes the pavement susceptible to early fatigue and thermal cracking.
8What is the typical recommended spray application rate for a diluted asphalt emulsion tack coat on a clean, milled asphalt surface prior to placing an HMA overlay?
A.0.05 to 0.15 gallons per square yard
B.0.30 to 0.50 gallons per square yard
C.0.75 to 1.00 gallons per square yard
D.1.50 to 2.00 gallons per square yard
Explanation: The Asphalt Institute recommends spraying an emulsion tack coat (SS-1h or CSS-1h cut roughly one part water to one part emulsion) at 0.05 to 0.15 gallons per square yard, which leaves only about 0.02 to 0.05 gallons per square yard of residual asphalt. Milled surfaces take the upper end of the range; NCHRP Report 712 targets roughly 0.055 gal/sq yd residual on milled HMA. Always work backward from the residual rate, since the sprayed rate depends on how much the emulsion is diluted.
9A paving crew needs to apply a CSS-1h asphalt emulsion tack coat to a 4,500 square yard milled pavement at an application rate of 0.08 gallons per square yard. How many total gallons of emulsion are required?
A.360 gallons
B.280 gallons
C.450 gallons
D.540 gallons
Explanation: Multiply the area by the specified application rate: 4,500 sq yd * 0.08 gal/sq yd = 360 gallons of asphalt emulsion.
10What is the primary difference between a prime coat and a tack coat in asphalt pavement construction?
A.A prime coat penetrates untreated aggregate base to bind surface fines, while a tack coat bonds adjacent asphalt layers
B.A prime coat is applied over fresh hot mix asphalt, while a tack coat is applied under subgrade soil
C.A prime coat consists of coal tar, while a tack coat consists of pure Portland cement
D.A prime coat is used only for line striping, while a tack coat seals cracks
Explanation: A prime coat (typically liquid cutback asphalt like MC-70 or penetrating emulsion) is applied directly onto an untreated absorbent aggregate base to penetrate, bind loose surface particles, and waterproof the base. A tack coat is a light application of asphalt emulsion applied between existing asphalt/concrete layers to ensure thin-film structural bonding.

About the AZ ROC CR-66 Seal Coating Exam

The Arizona ROC CR-66 Seal Coating Examination is a computer-delivered, open-book trade examination administered by PSI Services LLC for the Arizona Registrar of Contractors. The exam evaluates a candidate's technical knowledge across asphalt paving, aggregate base preparation, hot mix asphalt laydown and compaction, sealcoating emulsion formulations, sand slurry mix design, hot-pour crack filling, surface preparation, traffic line striping, ADA stencil layouts, glass bead application, spray equipment calibration, and OSHA 1926 construction safety standards.

Exam sponsor: Arizona ROC / PSI Services LLC. The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Questions

30 questions

Time Limit

75 minutes

Passing Score

70%

Exam / Certification Fees

$66

Exam sponsor website

Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.

Official sources

Our practice resources: topics covered

We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.

47%

Asphalt and Paving

Subgrade preparation, aggregate base installation, hot mix asphalt (HMA) laydown, compaction equipment and rolling sequences, asphalt binder selection, joint construction, tack coats, surface drainage, slope layout, and pavement distress repair.

17%

Asphalt Markings

Traffic line striping, stencil applications (ADA emblems, arrows, crosswalks, stop bars), waterborne acrylic and alkyd traffic paints, wet/dry film thickness, glass bead application, fire lane regulations, curb painting, and line removal techniques.

26%

Sealcoating

Refined coal tar pitch emulsion, asphalt emulsion, sand slurry mix design (lbs sand per gallon), water dilution, surface preparation, power washing, oil spot priming, crack cleaning and heat lancing, hot-pour rubberized crack filling, squeegee/spray application, and curing environmental conditions.

10%

OSHA Safety

OSHA 29 CFR 1926 construction safety standards, Hazard Communication (SDS, chemical handling of sealants/solvents), personal protective equipment (PPE), temporary traffic control zones (MUTCD Part 6), equipment pressure safety, and heat stress prevention in Arizona climates.

Preparing for the AZ ROC CR-66 Seal Coating Exam

What You Need to Know

  • Passing score: 70%
  • Exam length: 30 questions
  • Time limit: 75 minutes
  • Exam / certification fees: $66 Official sources

Using Our Practice Resources

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

AZ ROC CR-66 Seal Coating: Suggested Study Strategy

1Focus heavily on Asphalt and Paving concepts (47% of the exam), including subgrade compaction density requirements, aggregate base grading, HMA delivery temperatures, breakdown/intermediate/finish rolling protocols, and tack coat application rates.
2Master sealcoat mix design calculations, including emulsion volume, water dilution ratios (typically 15% to 20%), and sand loading rates (2 to 5 lbs of silica sand per gallon of concentrated emulsion).
3Understand coverage rate and yield math for asphalt tonnage, sealcoat slurry (sq yd / gal), and line striping paint (linear feet per gallon at specified WFT).
4Review traffic marking standards: ADA parking stall dimensions, symbol stencils, 4-inch line width tolerances, glass bead retroreflectivity embedment (minimum 50-60% depth), and fire lane striping.
5Study OSHA 1926 construction safety requirements for Hazard Communication (SDS for asphalt/tar products), heat stress management in desert climates, MUTCD Part 6 work zone traffic control, and PPE for hot-pour crack filling and asphalt paving.

Frequently Asked Questions

How many questions are on the official Arizona ROC CR-66 Seal Coating exam?

The official PSI CR-66 Seal Coating exam contains 30 scored multiple-choice questions. Candidates are allotted 75 minutes to complete the exam.

What passing score is required for the AZ ROC CR-66 exam?

A minimum passing score of 70% (21 correct out of 30 questions) is required to pass the trade examination.

How does the CR-66 exam differ from the A-15 Seal Coating exam?

The CR-66 blueprint includes a substantial Asphalt and Paving section (47% / 14 questions), which covers subgrade preparation, aggregate base, hot mix asphalt placement, compaction, and paving repair. The A-15 exam does not contain an Asphalt and Paving topic area.

Is the Arizona ROC CR-66 Seal Coating exam open book?

Yes, the examination is open-book. Approved references (such as OSHA 29 CFR 1926 construction regulations, Asphalt Institute references, and ISSA sealcoating guidelines) may be brought into the PSI testing center.

Where can I schedule the AZ ROC CR-66 exam?

Examinations are scheduled online through PSI Services LLC at https://test-takers.psiexams.com/azcon or by calling PSI candidate services.