TITLE 77: PUBLIC HEALTH
CHAPTER I: DEPARTMENT OF PUBLIC HEALTH
SUBCHAPTER r: WATER AND SEWAGE
PART 890 ILLINOIS PLUMBING CODE
SECTION 890.440 ACID-PROOF TRAPS
Section 890.440 Acid-Proof Traps
Where a vitrified clay or other brittleware, acid-proof trap is installed underground, it shall be embedded in concrete to a thickness of six (6) inches from the bottom and side of the trap.