Swimming Pool Construction Inspection

Per IRC AG105 and ACI 350, the pool shell must be designed and constructed to withstand hydrostatic pressure, soil loads, and dynamic water loads. Concrete pool shells require a minimum thickness of 6 inches with #4 rebar spaced at 12 inches on center in both directions. Shotcrete or gunite applications must achieve a minimum compressive strength of 4,000 psi at 28 days. The shell must be free of structural cracks, honeycombing, and cold joints.

1. Review structural engineer's plans and verify shell dimensions match approved drawings

2. Inspect rebar placement — minimum #4 at 12" on center each way with 2" minimum cover

3. Verify shell thickness at multiple points using approved documentation or core samples

4. Examine the entire shell surface for structural cracks, voids, or honeycombing

5. Confirm compressive strength test results meet or exceed 4,000 psi at 28 days

- Insufficient rebar coverage or improper spacing leading to cracking

- Shell thickness below minimum specification at curved transitions

- Cold joints from interrupted shotcrete application

- Honeycombing or voids in gunite due to improper nozzle technique

Per ACI 350 and ASTM C1364, the pool interior finish must provide a watertight barrier. Plaster finishes require a minimum thickness of 3/8 inch applied in a single coat. Tile finishes must use waterproof thin-set mortar meeting ANSI A118.10. All penetrations for returns, drains, and lights must be sealed with approved hydrostatic gaskets or sealants. The pool must pass a 24-hour water loss test with no more than 1/8 inch evaporation-adjusted loss.

1. Inspect plaster or finish application for uniform thickness and smooth, defect-free surface

2. Verify all penetrations are sealed with approved gaskets or waterproof sealants

3. Check tile adhesion by tapping — hollow sounds indicate debonding

4. Conduct a 24-hour bucket evaporation test to measure water loss

5. Inspect coping and deck-to-pool joint for proper sealant application

- Plaster delamination or crazing from improper curing or calcium deposits

- Leaking at return fittings due to missing or improperly seated gaskets

- Tile debonding from using non-waterproof mortar in submerged applications

- Coping joint sealant failure allowing water intrusion behind the shell

Per IRC AG103 and ANSI/APSP-1, the filtration system must be capable of turning over the entire pool volume within a maximum of 12 hours for residential pools and 6 hours for public pools. The pump must be properly sized for the total dynamic head of the system. Piping must be Schedule 40 PVC minimum for pressure side and Schedule 40 or SDR 21 for suction side. All plumbing connections must be solvent-welded or use approved mechanical couplings per IPC standards.

1. Calculate pool volume and verify pump flow rate achieves required turnover within 12 hours

2. Inspect all piping for proper sizing, support spacing, and solvent-welded joints

3. Verify filter type and size are adequate for pool volume per manufacturer specifications

4. Check pump installation — proper mounting, priming pot accessible, unions installed for service

5. Confirm system operates at proper pressure (clean filter reading on pressure gauge)

- Undersized pump or filter resulting in inadequate turnover rate

- Air leaks on suction side causing pump to lose prime

- Missing unions at equipment connections making future service difficult

- Improper pipe sizing creating excessive friction loss and reduced flow

Per IRC AG105.2 and IBC 3109.4, swimming pools must be enclosed by a barrier not less than 48 inches in height measured on the exterior side. Barrier openings must not allow passage of a 4-inch sphere. Gates must be self-closing, self-latching, and open outward from the pool. Latch release mechanisms must be at least 54 inches above grade or, if below the top of the gate, must be on the pool side with no opening greater than 1/2 inch within 18 inches of the latch. Residential walls used as barriers must not have direct pool access through doors without alarms.

1. Measure barrier height — minimum 48 inches on the exterior side at all points

2. Test all openings with a 4-inch sphere — none shall pass through

3. Verify gates are self-closing from any open position and self-latching

4. Confirm gate latch height is 54 inches above grade or properly shielded on pool side

5. Check that any house doors opening to pool area have approved alarms or self-closing devices

- Barrier height below 48 inches due to grade changes on exterior side

- Horizontal rail spacing that creates a climbable ladder effect

- Gate latches that fail to engage reliably or are installed below required height

- Missing door alarms on house openings with direct pool access

Per NEC Article 680, all metal parts within 5 feet of the pool water's edge must be bonded together using a minimum #8 AWG solid copper conductor. This includes the pool shell reinforcing steel, metal coping, ladders, handrails, light niches, pump motors, and metal piping. Equipotential bonding grid per NEC 680.26(C) is required for pool decks. All receptacles within 20 feet of the pool must be GFCI-protected, and underwater lighting must operate at 15V or less or be GFCI-protected per NEC 680.23.

1. Verify bonding connections at rebar, light niches, pump, and all metal components with continuity tester

2. Confirm equipotential bonding grid is installed per NEC 680.26(C) within the pool deck

3. Test all receptacles within 20 feet of pool edge for GFCI protection

4. Verify underwater lights are listed for pool use and operate at approved voltage

5. Check that equipment grounding conductors are properly sized and connected

- Missing bonding connection at one or more metal components near pool

- Equipotential bonding grid omitted from pool deck construction

- Receptacles within 20-foot zone lacking GFCI protection

- Underwater light fixtures not listed for wet-niche pool applications

Per the Virginia Graeme Baker Pool and Spa Safety Act (VGBA) and ANSI/APSP/ICC-7, all pool and spa drains must be equipped with anti-entrapment drain covers compliant with ASME/ANSI A112.19.8. Single main drain pools must have a safety vacuum release system (SVRS), suction-limiting vent system, or gravity drainage system. Drain covers must be rated for the maximum flow of the circulation system. For pools with a single main drain, an unblockable drain or approved SVRS per ASTM F2387 is required.

1. Verify all drain covers are ASME/ANSI A112.19.8 compliant and marked with flow rating

2. Confirm drain cover flow rating meets or exceeds the maximum system pump flow

3. Check for dual main drains spaced at least 3 feet apart or approved alternative SVRS

4. Inspect drain covers for secure attachment — no missing screws, no visible damage

5. Verify safety vacuum release system (if installed) is functional and listed per ASTM F2387

- Drain covers not rated for actual system flow capacity

- Single main drain without required SVRS or secondary safety device

- Damaged or loose drain covers creating entrapment hazard

- Expired drain covers used beyond manufacturer's rated service life