Virginia Swimming Pool Construction Contracting Qualified Individual Examination

Under 18VAC50-22-30, swimming pool construction contracting (POL) authorizes which of the following?

• AConstruction, repair, improvement, or removal of in-ground swimming pools
• BConstruction of above-ground and in-ground pools, including circulation plumbing
• CAny pool work, including electrical bonding and HVAC heaters
• DIn-ground pool construction only, with no repair or removal work

Which group of trades is expressly excluded from the Virginia POL specialty?

• AMasonry, concrete finishing, and steel tying
• BExcavation, forming, and shotcrete placement
• CTrade-related plumbing, electrical, backflow, and HVAC work
• DCoping, waterline tile, and concrete deck work

A homeowner asks a POL contractor to install a free-standing above-ground pool on a level backyard pad. What is the correct scope conclusion?

• APOL covers it because any swimming pool is in the specialty
• BPOL does not cover above-ground pools; the specialty is limited to in-ground pools
• CPOL covers the tank, and the contractor may also run the pump and bonding grid
• DPOL covers above-ground pools if the water depth exceeds 24 inches

Besides POL, which Virginia classifications or specialty also provide the in-ground swimming pool construction function?

• AELE, PLB, and HVA only
• BHIC and CIC only
• CUUC and WWP only
• DCBC, RBC, H/H, and RFC

Which task must a POL contractor assign to a properly licensed plumbing contractor rather than perform under POL?

• AShooting the gunite shell around the deep-end hopper
• BInstalling the circulation pump, filter, and pool piping
• CTying the wall steel into the bond beam
• DSetting precast coping on the finished bond beam

The steel cage for an in-ground pool is complete and shotcrete is scheduled for the next morning. Which required item is outside the POL specialty and must be performed by a licensed electrical contractor?

• AEquipotential bonding of the pool reinforcing steel
• BChecking bar cover with chairs and dobies
• CTrimming overspray to the finish waterline
• DLayout of the bond-beam elevation

A municipal inspector requires a backflow preventer on the potable fill line serving a new in-ground pool. Under the POL specialty, who should install that device?

• AThe POL qualified individual, because the fill line is part of the pool
• BAny laborer on the pool crew if the device is downstream of the meter
• CA contractor authorized to perform backflow work, not the POL specialty alone
• DThe concrete finisher, because the device is set in the deck

A contract includes a gas-fired pool heater and associated flue. How should a POL contractor treat that work?

• AInstall it under POL because heaters are pool equipment
• BInstall the heater but hire an electrician only for the thermostat
• CTreat the heater and flue as incidental masonry
• DExclude it from POL production and assign it to a properly licensed HVAC or other authori…

A property owner wants an abandoned in-ground concrete pool broken out, the hole filled, and the yard restored. Is that work inside POL?

• AYes. Removal of an in-ground swimming pool is expressly included
• BNo. POL covers only new construction
• CNo. Only a demolition specialty may touch a pool shell
• DYes, but only if the contractor also relocates the circulation piping

A five-year-old gunite pool has a leaking structural crack in the deep-end wall. Which statement best describes POL authority?

• APOL may inspect only; a CBC license is required to patch the shell
• BPOL may repair the in-ground shell, but circulation-pipe repairs remain plumbing work
• CPOL may repair both the shell crack and the buried suction piping
• DPOL may repair the crack only if the pool is completely removed and rebuilt

A POL firm is prime contractor on a residential in-ground pool. Which coordination plan stays inside the specialty while remaining legal?

• AThe POL crew installs the shell, then a licensed electrician bonds the steel after shotcr…
• BThe POL crew installs the shell and a licensed plumber sets the circulation system; a lic…
• CThe POL crew installs the shell, circulation piping, and bonding grid because all three a…
• DThe POL crew installs the heater and backflow preventer to keep the schedule, then calls…

A customer wants a POL contractor to add a spa spillway, raise the bond beam, and replace damaged coping on an existing in-ground pool. The circulation equipment will stay as-is. What is inside POL?

• AOnly the coping replacement; changing the beam is a building-classification job
• BOnly demolition of the old coping; new concrete requires a CEM specialty
• CNothing, because improvement of an existing pool is outside POL
• DThe spillway, bond-beam revision, and coping replacement, provided excluded trade work is…

Before a crew begins digging a residential in-ground pool in Virginia, what notification is required?

• ANotify Virginia 811 so member utilities can mark their underground lines
• BNotify only the electric utility, because gas and communications are private
• CNotify the building official instead of 811 if a permit has already been issued
• DNo notification is required if the backyard has no visible meters

Under Virginia's Underground Utility Damage Prevention Act, how must an excavator time a routine locate request?

• ACall the morning of excavation so marks are fresh
• BProvide notice so the scheduled excavation date is not less than 48 hours and not more th…
• CWait 30 calendar days after the ticket so every utility has extra time
• DNotify 811 only if the excavation will be deeper than 5 feet

A Virginia 811 excavation notice is approaching the end of its life and the pool hole is not finished. What is the correct action?

• AKeep digging; marks stay valid until the pool is backfilled
• BSpray new paint over faded marks and keep the original ticket number
• CContact 811 in time to have the lines re-marked; a routine ticket is valid for 15 working…
• DSwitch to hand digging only, which does not require a live ticket

Yellow paint marks a gas line across the proposed deep end. How must the excavator work within two feet of the marked location?

• AUse a toothed bucket slowly along the painted stripe
• BAssume the stripe is the exact center of the pipe and machine-cut 12 inches away
• CExpose the line by hand digging, keep mechanized equipment at least two feet from the exp…
• DHave the homeowner sign a waiver and continue with the excavator

Virginia 811 has marked the public utilities, but the backyard also has a private electric line to a shed and an irrigation main from the house. What should the pool excavator understand?

• A811 marks every buried line on the parcel, including owner-owned private lines
• BPrivate owner-owned lines are generally not marked by 811 member operators and must be lo…
• CPrivate lines may be ignored if they are smaller than 1 inch
• DIrrigation piping is always abandoned and can be ripped out with the bucket

A Tidewater Virginia backyard has standing water in a 2-foot test hole the morning after a dry day. What is the most important pre-excavation concern for an in-ground pool?

• AThe water table is high and the excavation will need planned dewatering and buoyancy cont…
• BStanding water proves the soil is Type A and can be cut vertical
• CThe pool can be dug and shot immediately because water will drain overnight
• DHigh groundwater only matters after plaster, not during excavation

Why can an empty in-ground concrete pool 'pop' or crack in a high water table?

• AThe plaster sucks groundwater through the shell and lifts the tile
• BWind uplift on the freeboard exceeds the weight of the bond beam
• CGroundwater hydrostatic pressure under the shell can exceed the weight of the empty pool
• DShotcrete always shrinks upward as it cures

What is the purpose of a hydrostatic relief valve installed in the deep-end floor of a concrete pool?

• ATo drain the pool faster during winterization
• BTo add makeup water automatically when the waterline drops
• CTo relieve filter-pump pressure if a return line is closed
• DTo let groundwater enter the pool if external pressure exceeds the internal water load, r…

The pool excavation cuts through an old gravel driveway and previously placed fill. How should that material be treated for OSHA soil classification?

• AAs Type A, because gravel packs tightly under a driveway
• BAs previously disturbed soil, which cannot be classified as Type A
• CAs stable rock, because it supported vehicles
• DAs unclassified material that needs no protective system at any depth

A Piedmont Virginia site shows highly plastic clay that shrinks when dry and swells when wet. What is the sound construction response for an in-ground pool?

• AIgnore the clay if the hole stands open for a week without collapse
• BShoot a thinner shell so the clay can move without cracking the gunite
• CObtain design and construction measures for expansive soil, such as over-excavation, mois…
• DFlood the hole overnight so the clay reaches equilibrium before steel is placed

During excavation, the operator finds a pocket of soft, wet organic soil under the planned deep-end floor. What should be done before steel is set?

• ACover the soft spot with polyethylene and set the steel on it
• BLeave the organic soil; shotcrete will bridge the weak area
• COver-excavate the unsuitable material and replace it with compacted structural fill or ot…
• DFill the pocket with rebound saved from the last job

Why do pool excavations usually extend beyond the finished interior dimensions of the shell?

• ATo create working room for forms, steel, shell thickness, and later backfill
• BTo automatically convert Type C soil into Type A
• CSo the plaster thickness can be poured as extra excavation
• DBecause Virginia 811 requires a 10-foot overdig around every pool

What site information should be established before a deep in-ground pool is excavated?

• AOnly the finished waterline elevation; soils can be judged after the hole is open
• BOnly the homeowner's preferred deep-end location
• CGroundwater conditions, soil character, underground utilities, and access for equipment a…
• DOnly whether the backyard fence can be used as a barrier

Groundwater is entering a pool excavation faster than a single sump pump can handle, and the floor is becoming a slurry. What is the correct construction response?

• AShoot the floor immediately so the gunite seals the springs
• BStop steel and shotcrete, install an adequate dewatering system, and restore a stable, de…
• CBackfill the hole halfway so the water has less room to collect
• DAdd extra plaster later to waterproof a shell shot into standing water

Overnight rain left two inches of standing water in the deep end, and the steel is already in place. What should happen before shotcrete?

• ARemove the water, clean mud off the steel and subgrade, and restore a firm, dewatered sur…
• BShoot through the water so the mix displaces it
• CBroadcast dry cement on the water and begin shooting immediately
• DLeave the water; it will improve curing of the new shell

On a Virginia pool site, white markings outline the proposed excavation. What do those marks represent under the APWA uniform color code?

• AProposed excavation
• BElectric power lines
• CGas, oil, or petroleum
• DPotable water

In pool construction, what is gunite?

• AFactory-molded fiberglass used as a one-piece shell
• BA vinyl membrane stretched over steel wall panels
• CDry-mix shotcrete, with water added at the nozzle as the material is pneumatically applied
• DA thin interior plaster finish applied after the pool is filled

How does wet-mix shotcrete differ from traditional dry-mix gunite?

• AWet-mix is premixed with water before it is pumped to the nozzle; dry-mix adds water at t…
• BWet-mix contains no cement, only sand and stone
• CDry-mix is used only for plaster, and wet-mix is used only for decks
• DThere is no difference except the brand name on the hose

What should be done with rebound and trimmings produced while shooting a pool shell?

• AShovel them into low spots in the floor to save material
• BBlend them into the next pass as coarse aggregate
• CLeave them in corners because they densify under later shots
• DRemove them from the structure; do not reuse them in the shell

During shotcrete, the nozzle operator cannot see the back side of a congested rebar intersection. What is the primary defect to prevent?

• ASand streaks in the plaster, which are only cosmetic
• BShadows and voids behind bars where the steel is not fully encapsulated
• CA darker color on the interior face of the shell
• DSlightly more cover than the drawings show

A gunite crew shoots the shallow end, then is forced to stop for the day before the deep-end walls are placed. What is the preferred way to continue the next day?

• AButt the new material against the overnight edge without preparation so the joint disappe…
• BPrepare the hardened joint as a construction joint: clean, roughen, bring it to a saturat…
• CCoat the overnight edge with form oil so the new shotcrete does not bond and can move
• DFill the joint later with plaster only

Immediately after a pool shell is shot, what curing practice protects the concrete?

• ALet the shell dry quickly so it can be tiled the next morning
• BKeep the concrete continuously moist so hydration can continue and shrinkage cracking is…
• CHeat the shell with open-flame torches to drive off mix water
• DCoat the interior with motor oil to seal the surface

In a vinyl-liner in-ground pool, what provides the primary waterproofing?

• AThe flexible vinyl liner membrane
• BA full-thickness gunite shell behind the liner
• CThe sand or vermiculite floor alone
• DThe waterline tile grout

What is a defining construction feature of a one-piece fiberglass in-ground pool?

• AA rebar cage is shot with gunite after the shell is set
• BA factory-molded shell is set on a prepared bed and backfilled to the manufacturer's requ…
• CA vinyl liner is stretched over steel panels inside the fiberglass
• DThe shell is cast in place using wall forms and a concrete pump only

A fiberglass shell has been set and leveled. How should backfill be placed?

• ADump all backfill on the deep-end side first so the shell cannot float
• BPlace specified backfill in lifts, keeping fill heights reasonably equal around the shell…
• CUse excavated clay clods in one lift to lock the shell in place
• DLeave a 2-foot void under the floor so groundwater can drain

What is the usual structural sequence for a residential gunite pool after the hole is dug and utilities are clear?

• APlaster, then steel, then gunite, then coping
• BCoping, then steel, then excavation, then gunite
• CSteel cage and bond beam, then shotcrete shell, then interior finishes and coping
• DFill the pool, then shoot gunite underwater

Which industry document is the principal shotcrete reference listed for Virginia's swimming pool construction examination?

• AThe National Electrical Code, Article 680 only
• BACI Guide to Shotcrete
• CThe International Fuel Gas Code only
• DThe Virginia Underground Utility Damage Prevention Act only

For a watertight concrete pool shell, which combination best describes accepted material goals?

• AA high water-cementitious ratio, 2,000 psi concrete, and no moist curing
• BA lean mix with large rebound aggregate and no reinforcement
• CA low water-cementitious ratio, adequate cementitious content, thorough consolidation aro…
• DA high-slump mix placed in standing water so the shell is self-healing

The forecast is below freezing overnight and the subgrade is frozen. What should the shotcrete crew do?

• AShoot as usual; hydration heat will thaw the dirt
• BDo not place shotcrete against frozen subgrade or frozen steel; wait for thaw and a sound…
• CAdd extra water at the nozzle so the mix cannot freeze
• DCover the frozen dirt with rebound and shoot onto that layer

In vinyl-liner construction, what is the purpose of the floor-to-wall cove?

• AIt is only decorative and may be omitted if the liner is thick
• BIt provides a smooth, supported transition so the liner is not stretched over a sharp cor…
• CIt replaces the need for a bead receiver at the top of the wall
• DIt is the hydrostatic relief path for groundwater

A fiberglass pool manufacturer's installation manual conflicts with a crew's usual sand-backfill habit. What governs?

• AThe crew's habit, because POL experience always overrides product instructions
• BWhichever method is faster so the shell cannot float
• CThe manufacturer's installation requirements for that shell, together with the approved d…
• DAny backfill is acceptable if the pool is filled the same day

After shotcrete is placed, the crew cuts and trims the interior to the finish lines. Why is that step required?

• ATo establish the designed interior shape, steps, benches, and waterline so later tile and…
• BTo reduce compressive strength so the shell can flex
• CTo expose the outer third of every reinforcing bar for inspection
• DTo create a sandy finish that replaces plaster

What is the bond beam on an in-ground concrete pool?

• AThe main drain sump in the deep end
• BThe thickened, continuously reinforced beam at the top of the pool wall
• CThe sand bed under a vinyl liner
• DThe first course of waterline tile

How should vertical wall bars typically engage the bond beam?

• AThey should stop 12 inches below the beam so the beam can move independently
• BThey should be bent or extended into the bond beam so wall and beam steel act together
• CThey should be isolated from the beam with foam sleeves
• DThey are not used when a bond beam is present

Per ACI 318, what is the specified concrete cover for reinforcing bars in concrete cast against and permanently exposed to earth?

• A3 inches
• B3/4 inch
• C1/2 inch
• D6 inches