GENESIS C201 Concrete Pools Practice Test

These questions are part of the practice quiz. Start practicing

• During tile installation, temperatures should be between 50°F and what temperature?
• What is the minimum allowable compressive strength value with a maximum water-cement ratio by weight of 0.45?
• Which force describes squeezing that reduces the cross-sectional area of a material?
• What is bonding and grounding in pool electrical work?
• Calcium chloride addition is based on which factor?
• Which feature helps accommodate movement due to temperature changes in concrete pools?
• Air gaps are usually specified by local code as being two times the diameter of the discharge pipe.
• What is common practice for curing concrete in hot climates?
• What is the advisable range of pump suction cover in sizing vanishing edge weir plunge basins?
• What is the maximum flow rate for a high rate sand filter?
• What is the recommended thickness of plaster finish that is troweled?
• What should be done with fiberglass and paint on renovated surfaces?
• Are sequestering agents necessary to keep metals from falling out of solution and damaging the pool plaster?
• Which action best describes how a deck is supported against vertical loads causing the slab to curve?
• What happens if water TDS is above 1200?
• What is the role of suction and return lines in a concrete pool's plumbing system?
• How should cold joints be treated in a concrete pool?
• Reinforcing steel resists shrinkage forces due to initial curing.
• If the pipe length doubles, the friction loss doubles.
• Construction specifications typically include the section number for each trade involved in a project.
• In intersecting arc method for pool layout, only the distances are measured and not angles.
• What factors influence the choice of interior finish in a concrete pool?
• What is the purpose of using an approved bonding agent with cold joints?
• What is the function of a main electrical disconnect in pool systems?
• How do you identify a leak in a concrete pool after completion?
• Push button door lock release distance from floor?
• Which interior finish is a common option among plaster, quartz aggregate plaster, and ceramic tile finishes?
• In pool equipment sizing, which factor should be prioritized to ensure proper operation?
• In the example, which factors contribute to the floor capacity?
• What is the function of the return line in a pool filtration system?
• Which statement correctly describes the target LSI range for a balanced pool?
• How do you typically verify water leaks in a concrete pool after plaster?
• What is the efficiency range for gas fired pool heaters?
• If the LSI of pool water is -0.35, what is the water condition?
• What is the primary purpose of reinforcing steel (rebar) in a concrete pool?
• What is a skimmer's primary function?
• A mosaic tile mounted on a rubber grid covering 30% of the tile surface is acceptable as long as the mesh is not water soluble.
• A shotcrete shell should be water cured and wet down prior to plaster application.
• What distinguishes gunite from shotcrete in pool shell application?
• The color of the 12 AWG copper wire mentioned in the example is Yellow.
• During tile installation, temperatures should be between 50° and what?
• Which common dampproofing product can be added to fresh concrete mix or topically applied by spraying the finished surface?
• If bottom is not more than 4 inches from a hard surface, what is the minimum barrier height?
• What construction approach helps avoid cold joints in concrete pool walls?
• What clearance is required for rebar on flat work between the soil and the rebar?
• What is thermal expansion in concrete pools and how is it addressed?
• Which force is described as the force that attempts to slice through a slab across its thickness?
• How can tile bezels or glass tile installation affect plaster adhesion?
• What is the purpose of a main drain in pool plumbing?
• What is the primary purpose of a bond beam?
• Which statement best describes the typical components of a pool filtration system?
• What unit is used for length in the deck length change calculation?
• Using Ohm's law, what is the formula to calculate the voltage?
• Which statement about bond breakers in pool plaster is true?
• In a residential grass or landscaped backyard, the NEC requires ____ inches minimum cover over low voltage non-metallic conduit.
• Which testing method identifies leaks after plastering?
• Which statement about alkalinity and plaster surfaces is correct?
• Name three common interior finishes used in concrete pools.
• How do reinforcing steel in concrete resist thermal expansion or shrinkage forces?
• Which geometric detail is essential to define the curvature of a concrete pool shell when ordering onsite?
• What is the required minimum center to center distance between 2 suction outlets?
• What could occur if water leaks in a concrete pool are not identified and repaired before finishing?
• Which range represents the advisable salt levels in a swimming pool, expressed in parts per million?
• What aspect should be anticipated as significantly impacted when epoxy-coated rebar is used in a pool deck?
• Which is better for pool tiles? Porcelain or ceramic?
• Which system component is typically installed at the lowest point to drain the pool?
• What is the purpose of a bonding grid on the pool equipment pad?
• What is the purpose of a bonding grid at the pool equipment pad?
• What clearance is required between rebar and the pool surface?
• Which statement is NOT a typical goal of concrete quality testing before finishing?
• The pipe support spacing should not exceed 36 inches for 1" pipe.
• Which chemical helps keep dissolved metals in solution to protect plaster?
• What is the most important thing to ensure component compatibility between SOFAs, pipes, pumps and filters, or other swimming pool equipment?
• What is the purpose of an air vent or bleed screw during shotcrete application?
• Without shade, ice, air circulators or other precautions, shotcrete should not be placed when temperatures are
• What are common causes of plaster finish failure in concrete pools?
• Which term describes the force associated with stretching a material along its length under load?
• What is the most frequent cause of plaster finish failures?
• Which feature besides pump efficiency contributes to reducing energy costs in a concrete pool system?
• Cyanuric acid is ideal for indoor pools.
• In the deck length change calculation, what is the temperature difference used?
• The ampacity of the wiring in a conduit must always be derated.
• What term describes a defect that is hidden and may not be observable for years?
• Which feature can reduce running costs for a concrete pool system?
• What is the purpose of a deck drain or coping channel in concrete pool installations?
• How is the verticality of walls and floor slope typically verified during pool construction?
• How does a saltwater chlorine generator operate in a concrete pool?
• How does hydrostatic pressure influence pool design when the shell is unfilled?
• Where should the level control be placed when sizing the plunge basin?
• What is the number one chemistry problem that leads to surface irregularities such as pitting in plaster swimming pools?
• How should water chemistry be maintained for plaster pools to prevent whitening and scaling?
• Which method is commonly used to identify a leak in a finished concrete pool?
• What is the recommended maintenance interval for checking pool equipment operation?
• What is the primary purpose of the plaster layer in a concrete pool?
• Admixtures cannot be added to dry shot concrete.
• Which type of stress primarily causes flexural deformation in members?
• Aside from sealing, what aesthetic function does plaster provide in a concrete pool?
• If water infiltration occurs at the plaster surface, which design change would most directly mitigate this issue?
• What can happen if water chemistry is not maintained in plaster pools?
• What is backflow prevention in pool plumbing, and why is it required?
• Under track for automatic pool covers requires coping overhang of 3 inches from shotcrete and 2.5 inches from tile.
• Which statement best describes the budgeting impact of epoxy-coated rebar on deck construction?
• Which statement best describes how floor capacity depends on dimensional and material properties?
• Which maintenance practices extend the life of a concrete pool?
• What is the least preferred method of cleaning pool surfaces?
• What effect can improper plaster chemistry have on surface durability?
• For surface preparation, the Concrete Surface Profile (CSP) should be ___ or greater.
• What is the practical time limit to make saw cuts for contraction joints in concrete deck work?
• Which maintenance practice contributes most directly to early leak detection in a concrete pool?
• When building in loose, caving soils, which extra work may be required?
• Voltage drop along long conductor runs can cause equipment to operate at a lower voltage and fail.
• On renovated pool surfaces, what is the recommended action regarding fiberglass and paint?
• What are common warning signs of improper plaster application?
• What is the purpose of anticorrosive coating on metal components inside a pool?
• Why is proper formwork and alignment important during concrete swimming pool construction?
• What coefficient is used in the length-change formula for concrete deck thermal expansion?
• Why is surface water balance critical for plaster compatibility?
• What describes the difference between a bond beam and coping?
• A pump burned out when supplied by a long run with the source at 540 V but the pump received 180 V. Why did this happen?
• What is the typical construction sequence for a new concrete pool shell?
• Why is tile and coping installed around the pool edge?
• Why is proper curing important after forming a concrete pool shell?
• What is the maximum water-to-cement ratio by weight mentioned for the compressive strength requirement?
• How does proper backfill support the pool structure?
• The higher the plasticity index, the more likely the soil is to be what?
• What is a solution for over excavation?
• Calculate the flow rate in gallons per minute of water traveling at 5 ft/sec in a 4 in pipe with a cross sectional area 0.087 sq ft.
• What safety or code considerations relate to pool fencing and access?
• What is the recommended practice for backfilling around a newly poured pool shell?
• Why is quality testing of concrete important before finishing the shell?
• In a pool with an interior spa, which design choice helps the cover pass freely over the dam wall?
• Which dampproofing product can be used in fresh concrete mix or applied to the finished surface?
• In an excavation, how far back from the edge should spoil or vehicles be located?
• A PI of 0 would be what material?
• Which of the following standards is not used for the construction of a residential swimming pool?
• Which factor most directly influences the durability of an interior pool finish in chemical environments?
• An 18in diameter column with a vertical load of 15,000 pounds is to rest on a 6 inch thick concrete floor. The compressive strength of the concrete is 4000 psi. What is the capacity of the concrete floor?
• What is the importance of proper slope at the pool floor?
• What is the target LSI range for a balanced pool?
• Equipotential bonding is the same as grounding.
• Is organic pigmented plaster more durable than inorganic pigmented plaster?
• In the intersecting arc method, which measurement is not used?
• PVC pipe should not be run parallel to walls or floors within the required structural thickness.
• Which issue is most likely caused by premature chemical exposure during plaster curing?
• What is the function of return lines in a pool's plumbing system?
• Which item is most directly affected by specifying epoxy-coated rebar in pool decks?
• What is a key implication of hydrostatic pressure on an unfilled pool shell for designers?
• Torsion is a combination of compression, tension & shear stresses.
• What maintenance action is associated with sand filters when pressure rises?
• When installing tile near plaster, what is essential to ensure plaster adhesion?
• Picket fence minimum height for barriers when bottom is not more than 4 inches from a hard surface?
• A shotcrete shell should be _________ finished, water cured, and wet down prior to plaster application.
• Under axial loading, which force causes a member to lengthen?
• With a plasticity index of 40 to 60, which option should be excluded from consideration?
• In a pool with an interior spa, which design choice helps the cover pass freely over the dam wall?
• The headloss and flow rate in a given pipe are in direct proportion. If you double the flow rate, you double the headloss.
• If renovating a pool surface includes fiberglass or paint, what is the recommended action?
• What is the maintenance difference between a sand filter and a cartridge filter?
• Why is a coping edge important for water containment and aesthetics?
• What is the role of a control system in a modern concrete pool?
• Which cost component is most affected when epoxy-coated rebar is specified for pool decks?
• Which steps are typical at the completion of pool shell construction?
• Which statement about efflorescence in plaster work is true?
• Which measures help prevent wall collapse during excavation in unstable soils?
• What is the required hand excavation limit for safe excavation next to a marked utility?
• Which of the following is NOT a common interior finish for concrete pools?
• Which finishing method is recommended for shotcrete before plaster application?
• Is it acceptable to fill shotcrete scoops around fittings with plaster?
• Which concept refers to moments causing rotation around a point in a structural member?
• What basic measurements are required to order a concrete pool shell on site?
• Ampacity derating occurs when four or more current-carrying conductors are in a conduit.
• Which combination represents the clearances for soil to rebar and rebar to surface?
• If epoxy-coated rebar is specified for a swimming pool deck, what impact does this have on the builder's responsibilities?
• Calculate the change in length of this concrete deck: 40' long 20° winter 100° summer.
• What is the function of pool plaster in a concrete pool?
• The presence of efflorescence is a bond breaker.
• True or False: Yield strength refers to the lowest point on a stress-strain curve of a steel bar before it fractures.
• What grade rebar is recommended for pools?
• In loose soils, which scenario best describes additional measures during excavation?
• Coping is placed on top of which structural element?
• What is the purpose of adding fly ash & silica fume to concrete mix?
• What is the advisable range of salt levels in a swimming pool?
• How much clearance should be provided in front of electrical distribution panels?
• What does plastic limit refer to?
• To calculate the number of gallons inside a vessel, you multiply the cubic foot volume by which conversion factor?
• Calcium chloride (CaCl2) should be measured and added to the mix on the basis of what?
• Which of the following are typical filter media types used in pool filtration systems?
• What maintenance action is associated with cartridge filters?
• Vacuum breakers are sufficient to prevent back flow.
• Setback distance for spoil from excavation edge is equal to the depth of the excavation.
• Doubling the flow rate will cause headloss to quadruple.
• CSP value should be at least 3.
• Why is interior shell waterproofing essential in concrete pool construction?