Fixture installation
Set toilets level on a fresh wax ring with the closet flange flush with the finished floor. Install lavatory traps with full-flow construction; avoid S-traps. Showers need a code-compliant pan and a slope of at least 1/4 inch per foot to the drain.
Water heaters
California requires water heaters to be strapped against earthquake movement with two straps, one in the upper third and one in the lower third. A temperature and pressure relief valve must discharge through a pipe to within 6 inches of the floor or outside. Gas heaters need a sealed combustion chamber or proper combustion air.
Common code violations
Frequent failures include missing seismic straps, unsealed openings to attics or garages, S-traps, missing access panels at tubs, and unprotected pipes through concrete. A 10-minute self-inspection before final saves hours of callback time.
Mini-quiz
Attempt 1 · 3 questions
Check your understanding. Passing is 70% — but you can keep going to the next lesson either way.
Question 1
Based on "Water heaters", which statement is correct?
Question 2
Based on "Water heaters", which statement is correct?
Question 3
Based on "Common code violations", which statement is correct?