Chapter 4 of 79% of exam

Pool/Spa Deck and Shell Finish

Deck and Shell Finish is about 9% of the C-53 exam: decking, interior finish and startup, and tile and coping. This page is a short survey; the PrepPass C-53 Swimming Pool study guide teaches each knowledge statement with worked examples and a full practice exam at CSLB's weights.

Decks

Bond, slope and joints.

Deck grid
12-by-12-inch grid, at least 3 feet from the water, tied to the four wires before the pre-deck inspection.
City builder guide
Public deck slope
1/8 to 1/4 inch per foot away from the pool.
2025 CBC §3114B.3

Finish, tile and coping

Barrier first, then plaster; markers and handholds keep swimmers safe.

Pre-plaster
Fence, gates and alarms working before plastering.
City builder guide
Depth line
4-to-6-inch tile line at 4-1/2 feet on public pools over 5 feet deep.
2025 CBC §3110B.3
Handhold
Not more than 9 inches above the waterline.
2025 CBC §3112B.1

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