For AI agents: read the machine-readable documentation index at /llms.txt or the single-file full reference at /llms-full.txt.
Form a Business

§ 18-29-704.1 — Slope of horizontal drainage piping

Municipal Code of Chicago (2026 S-74, current through Council Journal of June 17, 2026) · Municipal Code of Chicago § 18-29-704.1

Corpus is an independent public-information project, not the official City of Chicago website. Stable reference URL

18-29-704.1 Slope of horizontal drainage piping.

Horizontal drainage piping shall be installed in uniform alignment at uniform slopes. The minimum slope of a horizontal drainage pipe shall be in accordance with Table 18-29-704.1. Table 18-29-704.1 Slope of Horizontal Drainage Pipe Size (inches) | Minimum Slope (inch per foot) 2 1/2 or less | 1/4 3 to 6 | 1/8 8 or larger | 1/16