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100+ Free AZ ROC Swimming Pools (A-9/B-5/KA-5) Practice Questions

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2026 Statistics

Key Facts: AZ ROC Swimming Pools (A-9/B-5/KA-5) Exam

50

Official Scored Questions

AZ ROC / PSI Bulletin

120 min

Exam Time Limit

PSI Services

70%

Passing Score (35/50)

Arizona ROC

$66

Trade Exam Fee

PSI / AZ ROC

16%

Pool Equipment Blueprint Weight

PSI Content Outline

68%

Combined Structural Weight (Earth/Form/Rebar/Concrete/Shotcrete)

PSI Content Outline

The Arizona ROC A-9/B-5/KA-5 exam is a 50-question, 120-minute open-book computer-delivered test administered by PSI Services requiring a 70% passing score. Note: pool equipment is only 8 of 50 questions (16%), so candidates must focus heavily on sitework, rebar, concrete, and shotcrete. The practice bank provided here is an English-language MCQ study adaptation.

Sample AZ ROC Swimming Pools (A-9/B-5/KA-5) Practice Questions

Try these sample questions to test your AZ ROC Swimming Pools (A-9/B-5/KA-5) exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1A contractor is estimating the water capacity for a rectangular swimming pool measuring 30 feet in length and 15 feet in width. The pool floor slopes uniformly from a shallow end depth of 3.5 feet to a deep end depth of 6.5 feet. What is the total water volume of the pool in gallons?
A.16,830 gallons
B.12,620 gallons
C.21,870 gallons
D.22,440 gallons
Explanation: To calculate the volume of a pool with a sloping floor, first determine the average depth: (3.5 ft + 6.5 ft) / 2 = 5.0 ft. Next, calculate the volume in cubic feet: 30 ft × 15 ft × 5.0 ft = 2,250 cu ft. Finally, convert cubic feet to gallons using the standard factor of 7.48 gallons per cubic foot: 2,250 cu ft × 7.48 gal/cu ft = 16,830 gallons.
2A circular spa/pool has a finished inside diameter of 24 feet and a uniform flat floor depth of 4.5 feet. Using 7.48 gallons per cubic foot, what is the approximate water volume?
A.10,150 gallons
B.15,230 gallons
C.12,680 gallons
D.20,300 gallons
Explanation: The area of a circular surface is A = π × r². Radius r = 24 / 2 = 12 ft. Area = 3.14159 × 12² = 452.39 sq ft. Volume in cubic feet = 452.39 sq ft × 4.5 ft = 2,035.75 cu ft. Multiplying by 7.48 gallons/cu ft yields 15,227.4 gallons, which rounds to approximately 15,230 gallons.
3On a pool construction blueprint drawn to a scale of 1/4" = 1'-0", the length of a main pool wall measures 8.75 inches with an architect's scale. What is the actual field dimension of the wall?
A.21.875 feet
B.43.75 feet
C.35.0 feet
D.70.0 feet
Explanation: At a scale of 1/4 inch = 1 foot, every 1 inch on paper represents 4 feet in the field (1 / 0.25 = 4). Multiplying the paper measurement by 4 gives: 8.75 inches × 4 feet/inch = 35.0 feet.
4An estimator is calculating concrete volume for a 4-inch-thick pool deck. The overall outer deck boundary is 40 ft by 25 ft, and it encloses an unpaved pool cutout measuring 15 ft by 30 ft. How many cubic yards of concrete are required for the deck (excluding waste factor)?
A.18.33 cubic yards
B.9.26 cubic yards
C.12.35 cubic yards
D.6.79 cubic yards
Explanation: First calculate net deck surface area: Total area = 40 ft × 25 ft = 1,000 sq ft. Pool cutout area = 15 ft × 30 ft = 450 sq ft. Net deck area = 1,000 - 450 = 550 sq ft. Convert 4 inches thickness to feet: 4 / 12 = 0.3333 ft. Volume in cubic feet = 550 × 0.3333 = 183.33 cu ft. Convert to cubic yards by dividing by 27: 183.33 / 27 = 6.79 cubic yards.
5A freeform shotcrete pool shell has a total internal surface area (walls and floor) of 800 sq ft and a specified uniform shell thickness of 6 inches (0.5 ft). If the contractor adds a 10% allowance for rebound and waste, how many cubic yards of shotcrete material should be ordered?
A.16.29 cu yd
B.14.81 cu yd
C.13.33 cu yd
D.17.78 cu yd
Explanation: Net shell volume = 800 sq ft × 0.5 ft = 400 cubic feet. Convert to cubic yards: 400 / 27 = 14.815 cubic yards. Adding 10% for waste and rebound: 14.815 cu yd × 1.10 = 16.296 cubic yards (approx. 16.29 cu yd).
6A pool detail drawing specifies top of bond beam (TBB) elevation as +102.50 ft. The deepest pool subgrade elevation at structural floor invert is +94.00 ft. If the engineering plans require 8 inches of compacted aggregate sub-base beneath a 6-inch shotcrete floor shell, what total excavation depth below TBB must be achieved at the deep end pit?
A.8.50 feet
B.9.67 feet
C.9.00 feet
D.10.17 feet
Explanation: Structural depth from TBB to finished floor invert = +102.50 - +94.00 = 8.50 feet. Additional depth needed below floor invert: 6 inches shotcrete shell (0.50 ft) + 8 inches aggregate sub-base (8/12 = 0.67 ft) = 1.17 ft. Total excavation depth below TBB = 8.50 + 1.17 = 9.67 feet (9 ft 8 in).
7Per OSHA 1926 Subpart P, how is cohesive soil such as clay, silty clay, or hard caliche with an unconfined compressive strength of 1.5 tons per square foot (tsf) or greater classified?
A.Type C Soil
B.Type B Soil
C.Type A Soil
D.Stable Rock
Explanation: OSHA 29 CFR 1926 Subpart P defines Type A soil as cohesive soil with an unconfined compressive strength of 1.5 tsf or greater (e.g., clay, silty clay, sandy clay, and hard caliche). Type B has strength between 0.5 and 1.5 tsf, and Type C has strength of 0.5 tsf or less or is granular/cohesionless.
8During pool excavation, soft unstable organic soil is encountered at the deep end subgrade. What is the standard engineering practice to correct over-excavated or unstable subgrade before placing the pool shell?
A.Backfill with uncompacted native topsoil to original grade line
B.Fill the excavation pit with water to settle the loose earth naturally
C.Pour extra shotcrete directly over soft soil without sub-base compaction
D.Remove soft material and replace with crushed stone or engineered gravel compacted in lifts
Explanation: When soft or organic unstable soils are encountered, standard engineering specifications require undercutting/removing the unsuitable material and replacing it with clean crushed stone or engineered structural gravel, placed and compacted in controlled lifts (typically 6-inch maximum lifts) to achieve specified load-bearing capacity.
9In Arizona, what is the minimum advance notification time required by law to contact Arizona 811 (Blue Stake) before performing pool excavation work?
A.At least two working days prior to beginning excavation
B.24 hours prior to digging
C.Five calendar days prior to ground disturbance
D.10 working days prior to permit approval
Explanation: Arizona Revised Statutes (A.R.S. § 40-360.22) and Arizona 811 regulations require excavators to notify underground facility operators at least two working days (excluding weekends and legal state holidays) prior to beginning any excavation.
10What is the primary function of installing hydrostatic relief valves in the main drain sump of a concrete pool shell?
A.To drain pool water automatically into the municipal sewer during heavy rain
B.To relieve high groundwater pressure beneath the pool floor and prevent shell flotation when the pool is empty
C.To inject pressurized air under the pool shell for structural leveling
D.To filter sediment from deep sub-surface groundwater before it enters pool circulation
Explanation: When a pool is empty or partially empty, external groundwater pressure beneath the floor can exceed the weight of the concrete shell, causing hydrostatic uplift ('floating' or cracking the pool). Hydrostatic relief valves open automatically when external water pressure exceeds internal pool pressure, allowing groundwater to enter the sump and equalize pressure.

About the AZ ROC Swimming Pools (A-9/B-5/KA-5) Exam

The Arizona Registrar of Contractors (AZ ROC) A-9 Commercial Swimming Pools, B-5 Residential Swimming Pools, and KA-5 Dual Swimming Pool Contractor trade examination tests candidate competence in constructing, excavating, forming, reinforcing, placing concrete/shotcrete, installing mechanical pool equipment, and complying with safety standards.

Assessment

50 computer-delivered open-book multiple-choice questions administered at PSI centers. Passing score is 70% (35/50).

Time Limit

120 minutes

Passing Score

70%

Exam Fee

$66 (Arizona Registrar of Contractors / PSI Services LLC)

AZ ROC Swimming Pools (A-9/B-5/KA-5) Exam Content Outline

18%

Sitework and Excavating

9 questions on official exam. Soil types and classification, excavation layout, slope stability, trenching, backfilling and soil compaction, utility line locating, dewatering, and site drainage.

18%

Forming and Reinforcing

9 questions on official exam. Concrete reinforcing steel grades, rebar bending and clearance requirements, wire tying, bond beam forming, pool floor and wall contours, expansion joints, and steel mesh.

16%

Concrete

16% of exam (8 questions). Concrete mix design, water-cement ratio, slump testing, compressive strength, curing procedures, flatwork decks, placing and finishing techniques, and cold joint construction.

16%

Shotcrete

16% of exam (8 questions). Dry-mix (gunite) versus wet-mix shotcrete, nozzleman technique, velocity and impact, rebound removal, core testing, thickness pins/benchmarks, and moist curing of pool shells.

16%

Pool Equipment

16% of exam (8 questions). Circulation pumps, filtration systems (sand, DE, cartridge), gas/heat pump pool heaters, automated controllers, skimmers, VGB-compliant main drain covers, returns, and chemical feeders.

10%

Safety

10% of exam (5 questions). OSHA 1926 construction safety, trench protective systems (shoring, sloping, shield boxes), hazard communication, PPE, electrical safety/GFCI, and ladder/access rules.

6%

Plan Reading and Estimating

6% of exam (3 questions). Architectural/engineering blueprints, scale measurement, pool volume formulas (rectangular, round, freeform in gallons), surface area calculations, concrete/shotcrete yardage takeoffs.

How to Pass the AZ ROC Swimming Pools (A-9/B-5/KA-5) Exam

What You Need to Know

  • Passing score: 70%
  • Assessment: 50 computer-delivered open-book multiple-choice questions administered at PSI centers. Passing score is 70% (35/50).
  • Time limit: 120 minutes
  • Exam fee: $66

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

AZ ROC Swimming Pools (A-9/B-5/KA-5) Study Tips from Top Performers

1Do not spend all your prep time on pumps and filters—pool equipment is only 8 of 50 questions. Spend equal or greater effort on shotcrete, rebar forming, and excavation.
2Tab your reference books cleanly using permanently attached index tabs so you can rapidly find tables (such as ACI rebar cover, OSHA trench sloping angles, and NEC 680 bonding sizes).
3Practice pool gallonage and cubic yard calculations until you can complete them accurately in under two minutes.
4Review ACI 506R recommendations for shotcrete nozzle distance (2 to 6 feet perpendicular to surface), rebound clearance, and cold joint preparation.
5Familiarize yourself with Virginia Graeme Baker (VGB) Act regulations regarding anti-entrapment drain covers, dual main drains, and flow rate limitations.

Frequently Asked Questions

Which contractor license classifications use this examination?

This single trade examination applies to three Arizona ROC contractor license classifications: A-9 Commercial Swimming Pools, B-5 General Swimming Pools (Residential), and KA-5 Dual Swimming Pools (Commercial and Residential).

What is the format and passing score of the AZ ROC Swimming Pools exam?

The examination consists of 50 open-book multiple-choice questions administered by PSI on a computer. Candidates have 120 minutes (2 hours) to complete the test and must achieve a minimum passing score of 70% (35 correct answers).

What reference materials are permitted during the open-book exam?

Permitted reference materials include approved code books and trade manuals as listed in the official PSI Candidate Information Bulletin (such as ACI 506R Guide to Shotcrete, OSHA 1926 standards, NEC Article 680, and pool construction codes). All books must be bound and highlights/tabs are allowed according to PSI rules.

Why is Pool Equipment only 16% of the examination?

The PSI blueprint allocates 8 out of 50 questions (16%) to Pool Equipment. The majority of the test (68%) focuses on structural pool shell engineering—excavation, rebar forming, concrete, and shotcrete placement.

How do I schedule my AZ ROC Swimming Pools exam?

Exams are scheduled through PSI Services at test-takers.psiexams.com/azcon or by calling PSI candidate services. Testing centers are located throughout Arizona (Phoenix, Tucson, Flagstaff, Yuma, etc.) as well as nationwide.