Florida Certified Residential Pool/Spa Contractor Exam

Before beginning excavation for a residential pool in Florida, the contractor must notify the underground utility locate service. How far in advance must notice be given under Florida's underground facility damage prevention requirements?

• AAt least 48 hours before excavation, excluding weekends and holidays
• BAt least 2 business days before the planned dig
• CAt least 24 hours before any earth-moving activity
• DNotice is only required for commercial projects

A rectangular residential pool measures 30 ft by 15 ft with an average depth of 5.5 ft. Approximately how many gallons does it hold? (Use 7.48 gal per cubic foot.)

• A18,513 gal
• B16,695 gal
• C20,120 gal
• D12,475 gal

When setting elevations on a residential pool site, which benchmark is most appropriate for establishing the pool's bond beam and waterline elevations?

• AThe existing finished floor elevation of the residence
• BAn arbitrary reference the crew establishes on a fence post
• CMean sea level as published by NOAA
• DThe top of the pool's main drain sump

On a residential pool, the excavation is typically overdug beyond the inside pool dimensions. What is the primary reason for overdigging the shell perimeter?

• ATo provide working clearance for steel placement and shotcrete application
• BTo create space for a thicker gunite mix than designed
• CTo allow the pool to be deeper than the design shows
• DTo reduce the amount of backfill needed later

A pool excavation encounters a high seasonal water table. What is the standard method to keep the excavation stable during shell construction?

• AInstall a dewatering system and maintain pumping until the shell is placed and cured
• BBackfill the bottom with gravel and proceed without pumping
• CAdd calcium chloride to the shotcrete to accelerate set only
• DSwitch from gunite to a vinyl liner and skip dewatering

Per ANSI/APSP/ICC-5 for residential inground pools, what is the maximum recommended water turnover period for the entire pool volume under normal operation?

• A6 hours
• B4 hours
• C8 hours
• D12 hours

A pump must turn over 18,000 gallons in 6 hours. What flow rate (gpm) is required, ignoring losses?

• A50 gpm
• B75 gpm
• C60 gpm
• D90 gpm

What is the maximum water velocity recommended in residential pool suction piping to limit entrapment and turbulence per APSP hydraulics guidance?

• A8 ft/s
• B6 ft/s
• C10 ft/s
• D15 ft/s

Under the Virginia Graeme Baker Pool & Spa Safety Act, when a single main drain is used in a residential pool, what entrapment protection is required?

• AA compliant anti-entrapment drain cover or unblockable drain meeting ASME A112.19.8
• BA second equalization line plumbed to the skimmer only
• CReducing pump horsepower below 1 hp
• DOperating the pump only during daylight hours

When dual main drains are installed for entrapment protection, what is the minimum separation distance between the drains so the system is considered to have unblockable redundancy?

• A3 feet
• B1 foot
• C6 feet
• D10 feet

NEC Article 680 requires an equipotential bonding grid in the pool deck and shell. What is the purpose of this grid?

• ATo eliminate voltage gradients so all conductive surfaces are at the same potential
• BTo carry fault current back to the service panel
• CTo act as the equipment grounding conductor for the pump motor
• DTo reduce galvanic corrosion of stainless ladder anchors

Under NEC 680.26, what is the minimum size solid copper conductor permitted for the equipotential bonding grid of a permanently installed residential pool?

• A8 AWG
• B6 AWG
• C10 AWG
• D4 AWG

Where must the equipotential bonding grid be located relative to the pool deck surface per NEC 680.26?

• ABetween 4 and 6 inches below finished grade, under the deck
• BDirectly on top of the finished deck
• CAt least 12 inches below the deck surface
• DAbove the bond beam of the pool shell

A residential pool has a surface area of 450 ft² and the APSP turnover requirement gives a design flow of 50 gpm. What filter area is required if the sand filter media rate is 15 gpm/ft²?

• A3.33 ft²
• B2.25 ft²
• C5.0 ft²
• D1.5 ft²

Which filter type typically provides the finest filtration (smallest particle capture) in a residential pool system?

• ADiatomaceous earth (DE) filter
• BHigh-rate sand filter
• CCartridge filter
• DInline screen strainer

A residential pool pump is rated to deliver 60 gpm at 50 feet of total dynamic head (TDH). If installed with a long pipe run, multiple elbows, and a high-flow filter that raises TDH to 80 ft, what happens to the operating point?

• AFlow decreases as the pump moves up its curve to a lower flow at higher head
• BFlow increases because higher head forces more water through
• CFlow stays at 60 gpm because the pump rating is fixed
• DThe pump stops pumping entirely above 50 ft of head

What does Total Dynamic Head (TDH) represent in a pool circulation system?

• AThe sum of static lift, friction loss in piping and fittings, and equipment head loss
• BOnly the vertical distance from pump to the highest return
• COnly the length of pipe from pump to filter
• DThe pressure in the filter tank measured in psi

What is the ideal pH range for residential pool water to maintain bather comfort and chlorine effectiveness?

• A7.2 to 7.8
• B6.5 to 7.0
• C8.0 to 8.5
• D7.8 to 8.4

What is the generally recommended total alkalinity (TA) range for a residential plaster pool?

• A80 to 120 ppm
• B40 to 60 ppm
• C150 to 200 ppm
• D20 to 40 ppm

What is the recommended calcium hardness range for a residential plaster pool to protect the surface?

• A200 to 400 ppm
• B50 to 100 ppm
• C1000 to 1500 ppm
• D10 to 50 ppm

What is the purpose of cyanuric acid (stabilizer) in an outdoor residential pool?

• ATo protect chlorine from rapid degradation by sunlight
• BTo lower the pH of the water
• CTo increase total alkalinity
• DTo precipitate calcium from the water

A residential pool holds 15,000 gallons. Using the standard treatment of about 12.8 fl oz of 10% sodium hypochlorite to raise free chlorine 1 ppm per 10,000 gal, how much 10% bleach is needed to raise FC by 2 ppm?

• A38.4 fl oz
• B12.8 fl oz
• C25.6 fl oz
• D51.2 fl oz

Which chemical is most appropriate for raising pH in a residential pool without significantly increasing total alkalinity?

• ASoda ash (sodium carbonate)
• BBaking soda (sodium bicarbonate)
• CMuriatic acid
• DCalcium chloride

What is the role of the shotcrete nozzleman's distance and angle during placement of a residential pool shell?

• AThe nozzle is held roughly perpendicular to the surface at the proper distance to drive m…
• BThe nozzle is swept at a steep glancing angle to spread material faster
• CThe nozzle is held as close as possible to pack material tightly
• DThe nozzle distance is irrelevant if the mix is wet enough

What is the fundamental difference between gunite (dry-mix) and shotcrete (wet-mix) as covered in ACI 506R?

• AGunite conveys dry mix through a hose and adds water at the nozzle; shotcrete conveys pre…
• BGunite uses wet mix and shotcrete uses dry mix
• CGunite is only used for floors and shotcrete only for walls
• DThere is no process difference; the terms are interchangeable

In residential pool shell reinforcing, what is the typical lap splice length used for #3 or #4 deformed steel bars in the cage?

• AApproximately 40 bar diameters, per Placing Reinforcing Bars guidance
• BOne inch for any bar size
• CEqual to the bar diameter
• DNo lap is needed for pool shells

Why is reinforcing steel held off the soil with chairs or spacers during pool cage construction?

• ATo ensure the steel is fully encased in shotcrete and protected from corrosion
• BTo make the cage lighter to lift
• CTo reduce the amount of steel required
• DTo keep the bars from rusting before placement

What is the typical purpose of a bond beam in a residential pool shell?

• ATo form a thickened, reinforced perimeter element that ties the walls together and suppor…
• BTo provide a path for bonding the electrical grid
• CTo act as the main drain sump
• DTo bond the skimmer to the returns

A residential pool wall section is 30 ft long, 1 ft thick, and 4 ft high. How many cubic yards of concrete (or shotcrete) are required for this wall section?

• A4.44 yd³
• B120 yd³
• C40 yd³
• D1.48 yd³

What is the standard waterline tile band height used on a residential pool?

• A6 inches
• B12 inches
• C2 inches
• D18 inches

What is the recommended deck slope away from a residential pool for surface drainage?

• AApproximately 1/4 inch per foot (about 2%)
• B1 inch per foot
• CFlat, with no slope
• D1/2 inch per foot toward the pool

What is an expansion joint in pool deck construction, and where is it typically located?

• AA separation between the deck and the pool bond beam or at deck control points, filled wi…
• BA welded steel connection holding the deck to the pool shell
• CA decorative tile pattern around the coping
• DA plumbing coupling in the return line

Under the Florida Residential Swimming Pool Safety Act (F.S. 515), a new residential pool must have at least one approved safety feature. Which of the following is an acceptable safety feature?

• AA non-removable mesh barrier meeting the code height that isolates the pool from the resi…
• BA floating chlorine dispenser shaped like a toy
• CA simple rope and float line across the pool
• DA 'No Trespassing' sign on the property fence

Under Florida's pool safety barrier requirements, what is the minimum height of a residential pool isolation barrier?

• A48 inches
• B36 inches
• C60 inches
• D42 inches

On a residential pool barrier gate, where must the release mechanism be located to comply with Florida pool safety requirements?

• AAt least 54 inches above the bottom of the gate, or lower if locked or shielded
• BAt any height as long as the gate self-closes
• CNo higher than 36 inches
• DOn the pool side only, at any height

Which NEC Article 680 section governs the installation of underwater luminaires (pool lights) in a residential pool?

• A680.23
• B680.21
• C680.26
• D680.42

Which transformer type is required for a wet-niche underwater pool luminaire operating at more than 15 volts?

• AAn isolated-winding transformer grounded to the pool bonding grid
• BAn autotransformer sharing the primary and secondary winding
• CA dimmer-rated line-voltage transformer
• DNo transformer is required for any wet-niche fixture

What minimum horizontal clearance must a residential pool wall maintain from the edge of a buried underground utility line, absent a more specific local rule?

• AMaintain clearances required by the utility and code; hand-excavate when approaching
• BThe pool wall may be built touching the utility line
• C5 feet from any utility, regardless of type
• D20 feet from any utility line

When backfilling around a completed residential pool shell, what material and method are typically used?

• AClean, compacted fill placed in lifts, free of organic material and large debris
• BAny soil excavated from the site, dumped in one lift
• CLoose sand with no compaction
• DConcrete backfill around the entire perimeter

On a residential pool, the skimmer is typically installed at what level relative to the design waterline?

• AWith the skimmer throat at the design waterline so the surface flow is captured
• BBelow the waterline by 6 inches
• CAbove the waterline by 4 inches
• DAt the floor of the deep end

What is the purpose of the skimmer weir (the floating flap at the skimmer mouth)?

• ATo allow surface water into the skimmer and prevent pulled-in debris from washing back in…
• BTo increase the velocity of the return jets
• CTo prevent backflow from the main drain
• DTo chlorinate the water passing through

A pump circulates 60 gpm through a system with 35 ft of static and friction head plus 15 ft through the filter and heater. What is the total dynamic head (TDH)?

• A50 ft
• B35 ft
• C15 ft
• D20 ft

What is the primary function of a multiport valve on a residential sand or DE filter?

• ATo direct flow between filter, backwash, waste, rinse, recirculate, and closed positions
• BTo adjust the pH of the water
• CTo control the pump motor speed
• DTo add chlorine to the return line

When backwashing a high-rate sand filter, what is the general guideline for when to stop the backwash cycle?

• AWhen the water in the sight glass runs clear
• BAfter exactly 30 seconds, regardless of water clarity
• CWhen the filter pressure gauge reads 5 psi above clean
• DWhen the pump stops drawing water

On a residential pool, what does a pressure gauge reading 10 psi above the clean starting pressure indicate?

• AThe filter is loaded and should be backwashed or cleaned
• BThe pump is oversized and must be replaced
• CThe filter is too clean and water is moving too fast
• DThe system has a suction-side air leak

A rectangular pool is 40 ft by 20 ft. What is its perimeter (the bond beam length to be tiled and coped)?

• A120 ft
• B80 ft
• C60 ft
• D800 ft