CSLB C-53 Swimming Pool (Trade Exam) — All Questions
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27 questions
A deck bonding grid in a city's pre-deck inspection must extend how far from the water's edge?
- a.At least 10 feet
- b.At least 3 feet✓
- c.At least 6 inches
- d.At least 25 feet
The guide requires a 12-by-12-inch grid for a minimum of 3 feet from the water's edge. Six inches is too short, and 10 and 25 feet exceed the minimum.City builder guide (Menifee)
What spacing pattern does the deck bonding grid use?
- a.4 inches by 4 inches
- b.12 inches by 12 inches✓
- c.36 inches by 36 inches
- d.60 inches by 60 inches
The pattern is 12 by 12 inches of rebar, welded wire mesh, copper wire or other approved material. A 4-by-4-inch pattern is much tighter than required, and 36 by 36 and 60 by 60 inches are too open.City builder guide (Menifee)
Under pavers in the bonding zone, what is installed in place of rebar?
- a.Skipping the step
- b.A plastic net
- c.A copper grid✓
- d.A steel pipe
The handout says rebar if encased in concrete or a copper grid if under pavers or unpaved surfaces. Skipping the step leaves no grid, a plastic net does not conduct, and a steel pipe does not form a grid.City bonding handout (Menifee), 2022 CEC §680.26
What is the allowed slope of a public pool deck?
- a.1/2 to 1 inch per foot toward the pool
- b.A dead-level deck, sloped nowhere
- c.1/8 to 1/4 inch per foot away✓
- d.1 to 2 inches per foot away
The slope is not less than 1 percent (1/8 inch per foot) nor more than 2 percent (1/4 inch per foot) away from the pool to a drainage system. Steeper slopes, a level deck or a slope toward the pool fail.2025 CBC §3114B.3
A public pool deck fall of 2 inches over its width at 1/4 inch per foot corresponds to what deck width?
- a.16 feet
- b.2 feet
- c.4 feet
- d.8 feet✓
At 1/4 inch per foot, 2 inches of fall needs 8 feet of width. Two feet is the fall in feet, 4 feet gives 1 inch, and 16 feet gives 4 inches.2025 CBC §3114B.3
How wide must a public pool's continuous deck be around the pool?
- a.A width left unspecified
- b.At least 1 foot
- c.At least 4 feet✓
- d.At least 10 feet
A minimum continuous and unobstructed 4-foot-wide slip-resistant deck extends around the pool. One foot is too narrow and 10 feet is more than stated.2025 CBC §3114B.1
Where multiple public pools or spas are built adjacent to each other, how wide is the deck between them?
- a.At least 6 feet✓
- b.At least 1 foot
- c.At least 2 feet
- d.Zero
The deck width separating adjacent pools or spas is a minimum of 6 feet. The smaller figures are less than the minimum.2025 CBC §3114B.2
One city requires what at final inspection for joints between the deck, coping and pool?
- a.Expansion joints sealed with caulk✓
- b.Joints covered with deck paint
- c.Joints packed full of dry sand
- d.Joints left open for water drainage
The guide requires expansion joints between the deck, coping and pool or spa to be filled with an approved caulking or sealer. Open joints, sand and paint do not seal them.City builder guide (Menifee)
Which Residential Code condition makes glazing near a pool a hazardous location?
- a.Bottom edge under 60 inches, near the water✓
- b.A glass panel 20 feet from the water
- c.Tinted glass beside the pool
- d.A top edge higher than 10 feet
Glazing adjacent to pools with a bottom exposed edge less than 60 inches above the standing surface is hazardous unless more than 60 inches horizontally from the water's edge. Height, tint and distant glass are not the triggers.2025 CRC §R324.4.5
How does a public pool's finish color rule treat the waterline tile?
- a.Left unregulated
- b.Black, for visibility
- c.White, matching the shell
- d.A contrasting color✓
The finish is white except for contrasting items including lane markings, step edges, waterline tile and the 4-1/2-foot line tile. White waterline tile fails the contrast rule, black is not required, and the tile is regulated.2025 CBC §3108B.3
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What does the code require of a public pool's interior finish?
- a.Rough and absorbent for grip
- b.Smooth, waterproof and scrubbable✓
- c.Painted without surface preparation
- d.Dark blue in color throughout
The finished shell is lined with a smooth waterproof interior finish that will withstand repeated brushing, scrubbing and cleaning. A rough absorbent finish, unprepared paint and a color rule do not meet it.2025 CBC §3108B.2
One city's pre-plaster inspection checks which of the following?
- a.Water chemistry and filter pressure
- b.Fencing, gates and door alarms working✓
- c.Landscape irrigation and planting beds
- d.Deck stain color and sealer coats
The pre-plaster list includes barrier fencing, gates and required alarms plus covered niche ground connections. Chemistry, deck stain and irrigation are later or unrelated.City builder guide (Menifee)
At the final inspection in one city, how full must the pool be?
- a.Filled to the normal fill level✓
- b.Left empty until the deck cures
- c.Filled to the top of the deck
- d.Left half full for the first week
The guide requires the pool or spa filled completely with water to the normal fill level, with equipment operating, at final. An empty pool, a pool filled to the top of the deck and a half-full pool do not meet final.City builder guide (Menifee)
What reference reading is recorded at startup on a public pool's filter gauge?
- a.The pH of the pool water
- b.The brand of the pump
- c.Clean start-up pressure✓
- d.The pool water temperature
The pressure gauge located on the filter is marked with the clean start-up pressure reading. The pH, the pump brand and the water temperature are not gauge markings.2025 CBC §3125B.2
What must chemical feeders in public pools be adjusted by?
- a.An automatic pH and disinfectant control✓
- b.A timer set once each year
- c.The lifeguard's judgment at the time
- d.A manual test kit read weekly
Chemical feeders are adjusted by an automatic chemical monitoring and control system that regulates at a minimum pH and disinfectant. Judgment, a yearly timer and weekly manual tests lack monitoring.2025 CBC §3133B.1
What does the code say may be marked on a public pool shell?
- a.Slip-resistant lanes and depth lines✓
- b.A mural on the deep end wall
- c.A company logo on the shallow wall
- d.Decorative lettering the owner wants
No markings, designs or lettering are permitted on the shell except slip-resistant lane markings, depth marking lines and safety markings. Decorations, logos and murals are not allowed.2025 CBC §3110B.1
What is the maximum width of public pool lane lines on the bottom?
- a.12 inches✓
- b.1/8 inch
- c.36 inches
- d.4 feet
Slip-resistant lane lines shall not exceed 12 inches in width. A width of 1/8 inch is a hairline, not the maximum, and 36 inches and 4 feet are wider than the code allows.2025 CBC §3110B.2
A public pool deeper than 5 feet has a tile depth line 10 inches wide. How is it judged?
- a.Too wide, since 6 inches is the limit✓
- b.Acceptable, since 12 inches is the limit
- c.Acceptable, since the width is unregulated
- d.Too narrow, since 18 inches is required
The line is at least 4 and not more than 6 inches wide, so 10 inches is too wide. The 12-inch limit, an 18-inch requirement and an unregulated width are not stated.2025 CBC §3110B.3
At what depth is the depth marking line placed?
- a.4-1/2 feet✓
- b.6-1/2 feet
- c.5-1/2 feet
- d.3-1/2 feet
The line crosses the bottom where the water depth is 4-1/2 feet. Depths of 3-1/2, 5-1/2 and 6-1/2 feet are not where the code places the line.2025 CBC §3110B.3
Along the perimeter of a public pool, depth markers must not be spaced farther apart than what?
- a.50 feet
- b.100 feet
- c.25 feet✓
- d.5 feet
Perimeter markers are placed at distances not to exceed 25 feet. Five feet is closer than required, and 50 and 100 feet are wider than allowed.2025 CBC §3110B.4.1
What minimum numeral height do depth markers have?
- a.1/2 inch
- b.12 inches
- c.36 inches
- d.4 inches✓
Numerals are at least 4 inches high in a contrasting color. The smaller figure is too small, and the larger ones exceed the minimum.2025 CBC §3110B.4.4
A depth marker on the coping is set 5 feet from the pool water. How is it judged?
- a.Too near, since 8 feet is required
- b.Acceptable, since 12 feet is the limit
- c.Acceptable, since 10 feet is the limit
- d.Too far, since 3 feet is the limit✓
Markers on the coping or deck are as close as possible and no more than 3 feet from the water, so 5 feet is too far. The 10- and 12-foot limits and an 8-foot requirement are not in the code.2025 CBC §3110B.4.2
What overhang is allowed for a bull-nosed coping or cantilevered deck acting as a handhold?
- a.Not over 12 inches nor under 6 inches
- b.Not over 6 inches nor under 3 inches
- c.Not over 2 inches nor under 1 inch✓
- d.Not over 1 inch nor under 0 inches
The overhang shall not exceed 2 inches or be less than 1 inch, and the coping thickness shall not exceed 2-1/2 inches. The ranges 6 to 12 inches and 3 to 6 inches are far larger, and 0 to 1 inch is smaller than the minimum overhang.2025 CBC §3112B.3
A pool's handhold sits 14 inches above the waterline. How does the code treat it?
- a.It is too low, since 6 inches is required
- b.It exceeds the 9-inch maximum✓
- c.It meets the code, which allows 24 inches
- d.It meets the code, which allows 18 inches
Handholds are installed not greater than 9 inches above the waterline, so 14 inches is too high. The stated allowances of 24 and 18 inches are not in the code, and no 6-inch minimum exists.2025 CBC §3112B.1
For which pool depths is a no-diving marker required on the deck next to the depth markers?
- a.Pools with a slide
- b.Water depths of 6 feet or less✓
- c.Pools of every depth
- d.Water depths of 12 feet or more
For depths of 6 feet or less, a no-diving symbol is placed next to the depth markers. A slide is not the trigger, the symbol is not required at every depth, and 12 feet or more is the opposite end of the range.2025 CBC §3110B.5
At final in one city, what must fill the expansion joints between the deck, coping and pool?
- a.Loose sand swept into the gap
- b.An approved caulking or sealer✓
- c.A strip of untreated lumber
- d.Nothing, so the joint can breathe
Expansion joints between the deck, coping and pool or spa are filled with an approved caulking or sealer. Sand, an open gap and untreated lumber do not seal the joint.City builder guide (Menifee)
What equipment paperwork must be available for the final inspection in one city?
- a.The supplier's invoices for the equipment
- b.The crew's time cards for the job
- c.The homeowner's insurance policy
- d.The manufacturers' manuals for the equipment✓
All equipment manufacturer's manuals shall be provided for the inspection. Invoices, time cards and an insurance policy are not on the final inspection list.City builder guide (Menifee)