Nevada A-10 Commercial and Residential Pools Contractor Examination

A rectangular public pool is 40 ft long by 20 ft wide with a uniform 5 ft water depth. Using 7.48 gal/ft³, what design flow is required for a 6-hour turnover?

• A83 gpm
• B67 gpm
• C100 gpm
• D125 gpm

A commercial pool holds 54,000 gallons and the circulation pump delivers 150 gpm with a clean filter. What is the turnover time?

• A4.0 hours
• B6.0 hours
• C8.0 hours
• D3.0 hours

Per ANSI/APSP/ICC-1 2014 Section 8.2, the water velocity in public-pool suction piping shall not exceed which value?

• A10 feet per second
• B8 feet per second
• C6 feet per second
• D3 feet per second

A public-pool return line is Type L copper. Per ANSI/APSP/ICC-1 2014 Section 8.2, what is the maximum permitted water velocity in that discharge piping?

• A12 feet per second
• B6 feet per second
• C10 feet per second
• D8 feet per second

A public pool requires 120 gpm at the 6-hour turnover. Using a high-rate sand filter media rate of 15 gpm/ft² (NSF/ANSI 50 practice referenced by APSP-1 Section 9), what minimum filter area is required?

• A8.0 square feet
• B6.0 square feet
• C12.0 square feet
• D15.0 square feet

A spa circulation system is designed for 80 gpm. Using a pressure diatomaceous-earth (DE) media rate of 2.0 gpm/ft², what minimum filter area is required?

• A16 square feet
• B40 square feet
• C80 square feet
• D20 square feet

A pool filter system must handle 75 gpm. Using a cartridge media rate of 0.375 gpm/ft², what minimum cartridge area is required?

• A75 square feet
• B100 square feet
• C200 square feet
• D300 square feet

Per ANSI/APSP/ICC-1 2014 Section 12.3, when automatic surface skimmers are the sole overflow system, at least one skimmer is required for each how many square feet of water surface?

• A1,000 square feet
• B300 square feet
• C800 square feet
• D500 square feet

Per ANSI/APSP/ICC-1 2014 Section 11.6, the number of return inlets shall be based on a minimum of one return inlet per how much pool surface area?

• A300 square feet
• B500 square feet
• C150 square feet
• D1,000 square feet

A new public pool suction outlet (other than a skimmer) must have a cover tested to which standard, as required by ANSI/APSP/ICC-1 2014 Section 11.2 and the Virginia Graeme Baker Pool and Spa Safety Act?

• AANSI/NSF 14
• BANSI/APSP-16
• CASTM F1346
• DANSI Z21.56

Per ANSI/APSP/ICC-1 2014 Section 10.10, a circulation pump located below the pool waterline shall have isolation valves in which locations?

• AOn the discharge line only
• BOn the suction line only
• COn both the suction and discharge lines, in accessible locations
• DOn the filter backwash line only

Per ANSI/APSP/ICC-1 2014 Section 10.3, where shall a cleanable strainer or screen be provided on a pressure-filter circulation system?

• AAt each return inlet
• BDownstream of the filter
• CIn the heater bypass only
• DUpstream of the circulation pump

Per ANSI/APSP/ICC-1 2014 Section 8.3.3, circulation piping not integral to the manufactured pool shall be subjected to a sealed static hydraulic pressure test of which magnitude and duration before the deck is poured?

• A25 psi for 24 hours
• B50 psi for 1 hour
• C15 psi for 4 hours
• D100 psi for 15 minutes

Per ANSI/APSP/ICC-1 2014 Section 8.3, plastic circulation piping shall be at least which schedule and shall comply with ANSI/NSF 14?

• ASchedule 20 PVC
• BSchedule 40 PVC
• CSchedule 80 CPVC only
• DFlexible polyethylene tubing

Per ANSI/APSP/ICC-1 2014 Sections 6.9 and 8.1, a wading pool shall have which circulation arrangement?

• ASkimmers only, with no dedicated pump
• BA shared filter with the main pool if a valve can isolate it
• CA separate pool with an independent circulation system
• DA single suction outlet tied into the main-pool pump

Using GPM = 2.45 × d² × V, with d = 2.0 in nominal inside diameter, what is the maximum flow in a 2-inch suction pipe at the APSP-1 6 fps suction-velocity limit?

• A94 gpm
• B45 gpm
• C78 gpm
• D59 gpm

Per ANSI/APSP/ICC-1 2014 Section 17.5.2, public-pool pH shall not be less than which value and shall not exceed 7.8?

• A7.2
• B7.0
• C6.8
• D7.4

ANSI/APSP/ICC-1 2014 Section 17.5.2 recommends that public-pool pH be maintained in which ideal band?

• A7.0 to 7.2
• B7.4 to 7.6
• C7.8 to 8.2
• D6.8 to 7.2

Per ANSI/APSP/ICC-1 2014 Sections 8.1.1.1 and 17.5.4, pool water shall be clear enough that an 8-inch black-and-white Secchi disc or the deepest suction-outlet cover is sharply visible from the deck at a distance of up to how far?

• A50 feet
• B10 feet
• C30 feet
• D15 feet

A high-rate sand filter on a public pool started the day at 12 psi and has risen to 21 psi while flow has fallen below the design turnover. What is the most appropriate first maintenance action?

• ABypass the filter until closing time
• BAdd more sand on top of the existing media
• COpen the air-release and keep operating
• DBackwash the filter per the manufacturer’s instructions

Cyanuric acid is added to outdoor chlorinated pools primarily to do which of the following?

• AStabilize free chlorine against ultraviolet degradation
• BRaise calcium hardness
• CLower total dissolved solids
• DReplace the need for a residual sanitizer

A public-pool test kit reads 3.0 ppm free chlorine and 4.2 ppm total chlorine. What is the combined chlorine, and what does that value represent?

• A4.2 ppm of free available chlorine
• B1.2 ppm of chloramines (combined chlorine)
• C7.2 ppm of total sanitizer residual
• D3.0 ppm of cyanuric acid

Combined chlorine in a 30,000-gallon public pool is 0.8 ppm. Using the classic 10× breakpoint factor, how many pounds of 65% calcium hypochlorite are needed to reach breakpoint? Use pounds = (gallons × ppm × 8.33) ÷ (1,000,000 × decimal available chlorine).

• A6.5 pounds
• B1.2 pounds
• C3.1 pounds
• D0.8 pounds

A public spa holds 1,200 gallons. Using a 30-minute turnover commonly required for public spas (ANSI/APSP-2, referenced by APSP-1 Table 8.1.1), what minimum circulation flow is required?

• A60 gpm
• B20 gpm
• C10 gpm
• D40 gpm

After opening a pressure filter or separation tank for service, ANSI/APSP/ICC-1 2014 Section 9.2.3 requires which action before restarting the circulation system?

• AReassemble the tank and open the air-release valve or fitting before starting the pump
• BStart the pump immediately to reseat the lid
• CClose all air releases and bump the filter
• DBypass the filter until the gauge reads zero

Per ANSI/APSP/ICC-1 2014 Section 10.5.1, if a suction-outlet grate or cover is missing, broken, or loose, the operator shall do which of the following?

• AReduce pump speed and continue operation
• BShut the pool down immediately and keep it closed until the cover is properly repaired or…
• CCover the outlet with a skimmer lid until parts arrive
• DPost a 'swim at your own risk' sign and remain open

Per ANSI/APSP/ICC-1 2014 Section 17.2.2, chemical feed pumps shall be installed and controlled so they cannot operate unless which condition exists?

• AThe heater is firing
• BThe main drain is isolated
• CThere is adequate return flow to disperse the chemical
• DThe pool is closed to bathers

Total alkalinity is maintained in a gunite pool primarily because it does which of the following?

• AEliminates the need to measure pH
• BReplaces calcium hardness as the plaster-protection test
• CRemoves combined chlorine without oxidation
• DBuffers pH so it does not swing rapidly when acid or sanitizer is added

A newly plastered gunite pool shows etching and a plaster-dust residue while pH is in range. Which water-balance factor is most likely too low?

• ACalcium hardness
• BCyanuric acid
• CTotal dissolved solids
• DCombined chlorine

Per ANSI/APSP/ICC-1 2014 Section 17.1.1, which practice is prohibited while the pool is open to bathers?

• AOperating an NSF/ANSI 50 chemical feeder
• BManual feeding of sanitizer via the skimmer basket, or leaving undissolved sanitizer in t…
• CRecording pH and sanitizer residuals
• DRunning the circulation system

Per ANSI/APSP/ICC-1 2014 Section 22.1, both new and existing public swimming pools shall be maintained under the supervision of which person?

• AThe original building contractor only
• BAny employee who can unlock the pump room
• CA properly trained operator certified in accordance with state or local codes or a compar…
• DA lifeguard who is not trained in water chemistry

A new Class C hotel pool has an average depth of 3.5 feet. Per ANSI/APSP/ICC-1 2014 Table 8.1.1, what is the maximum allowed turnover period?

• A3.5 hours
• B6.0 hours
• C8.0 hours
• D5.25 hours

A 20,000-gallon pool must be raised 15°F in 8 hours. The gas heater is 80 percent efficient. Using BTU/h input = (gallons × 8.33 × ΔT) ÷ (hours × efficiency), what heater input rating is required?

• AAbout 390,000 BTU/h
• BAbout 250,000 BTU/h
• CAbout 312,000 BTU/h
• DAbout 500,000 BTU/h

Per ANSI/APSP/ICC-1 2014 Section 14.3, gas-fired pool heaters shall be tested to which standard?

• AANSI/APSP-16
• BANSI Z21.56
• CASTM F2208
• DNFPA 70 Article 680 only

Per ANSI/APSP/ICC-1 2014 Section 14.6.1.1, a natural-gas pool heater shall have which device installed outside the cabinet?

• AAn electrical GFCI on the gas valve
• BA water-pressure-relief valve piped into the gas line
• CA properly sized, readily accessible gas cock to stop fuel for service or emergency shutd…
• DA vacuum-release valve on the burner tray

Per ANSI/APSP/ICC-1 2014 Table 7.1.6, the minimum drainage slope for a textured, hand-finished concrete pool deck is which value?

• A1 inch per foot
• B1/4 inch per foot
• C1/2 inch per foot
• D1/8 inch per foot

Per ANSI/APSP/ICC-1 2014 Section 7.1.16, hose bibbs provided to rinse the deck shall include which protection?

• AA cross-connection control device to prevent backflow
• BA 2-inch air gap above the pool coping only
• CA reduced-pressure zone device on every return inlet
• DNo protection if the hose is used only for decks

Per ANSI/APSP/ICC-1 2014 Sections 7.1.9 and 7.1.10, the construction joint where pool coping meets the concrete deck shall be which of the following?

• AOmitted so the deck and coping act as one rigid slab
• BWatertight and detailed to protect the coping and its mortar bed from deck movement
• CFilled with gunite overspray
• DCaulked only on the waterline tile, never at the coping

Per ANSI/APSP/ICC-1 2014 Section 13.1, electrical installation at a public pool shall meet which code as adopted by the authority having jurisdiction?

• AACI 318 only
• BUniform Plumbing Code only
• CNFPA 70, National Electrical Code
• DASTM F1346

Equipotential bonding of a pool's conductive shells, metallic parts, and wet-niche forming shells is performed primarily to do which of the following?

• AAllow the pump to run without a grounding conductor
• BIncrease heater efficiency
• CReplace GFCI protection on branch circuits
• DKeep all bonded parts at the same voltage so a bather cannot become a current path

Per ANSI/APSP/ICC-1 2014 Section 13.2.2, underwater lighting shall provide a minimum of which illumination at the pool water surface area, unless the overhead-lighting alternate is used?

• A8 foot-candles, or 1/2 watt per square foot for incandescent underwater lights
• B1 foot-candle only
• C3 foot-candles from underwater lights alone
• D15 foot-candles from underwater lights alone

ANSI/APSP/ICC-1 2014 Sections 14.1 and 14.5.5 warn that fossil-fuel pool heaters produce which hazardous by-product, making venting and makeup air critical?

• AChlorine gas
• BCarbon monoxide
• COzone
• DHydrogen sulfide

Under NAC 624.150 subclassification A-10, decorative waterline tile and coping on a commercial pool are which of the following?

• AAllowed only under subclassification A-24 fountains
• BReserved exclusively to a B-2 general building license
• CAppurtenant work within the A-10 pool classification
• DUnlicensed handyman work if the contract is under USD 10,000

Per NAC 624.150(10), Nevada subclassification A-10 authorizes which scope of work?

• AFountains and ponds that are not swimming pools
• BResidential pools only; commercial pools require a B license
• CRepair of plaster and coping only, with no new construction
• DConstruction, alteration, and repair of commercial and residential pools and spas used fo…

A Nevada residential pool contract price is USD 42,000. Per NRS 624.940 and the NSCB pool-contract guide, what is the maximum initial down payment or deposit?

• AUSD 1,000
• BUSD 4,200
• CUSD 4,200 or USD 1,000, whichever is greater
• DUSD 6,300

Per the Nevada State Contractors Board residential pool-and-spa contract rules implementing NRS 624.940, a contract for a residential pool or spa must be in writing when it exceeds which amount?

• AUSD 500
• BUSD 1,000
• CUSD 10,000
• DUSD 100

Per NAC 624.6964(2), a residential pool or spa payment schedule must not set a timetable for completing any stage or phase that exceeds which period, unless delayed by an act of God or the owner agrees in writing to a longer period?

• A60 days
• B14 days
• C30 days
• D90 days