The Chicago Plumbing Code

§ 18-29-702


§ 18-29-702.1 Above-ground sanitary drainage and vent pipe.

Above-ground soil, waste and vent pipe shall conform to the respective standard listed in Table § 18-29-702.1. The use of polyvinyl chloride (PVC) plastic pipe shall be limited to buildings three stories or less in height intended for family occupancy. The use of DWV copper tubing shall not be permitted in any structure or plumbing system.

(Amend. Coun. J. 3-27-02, p. 82090, 3)

§ 18-29-702.2 Underground building drainage and vent pipe.

Underground building sanitary drainage and vent pipe shall conform to the respective standard listed in Table § 18-29-702.2 except that polyvinyl chloride (PVC) shall not be allowed.

§ 18-29-702.3 Building sewer pipe.

Building sewer pipe shall conform to the respective standard listed in Table § 18-29-702.3 except that polyvinyl chloride (PVC) shall not be allowed for underground building and vent pipe except for subsurface soil drainage. The use of cast-iron pipe will be allowed in the public way.

(Amend. Coun. J. 3-27-02, p. 82090, 3)

§ 18-29-702.4 Fittings.

Pipe fittings shall be approved for installation with the piping material installed and shall conform to the respective pipe standard listed in Table § 18-29-702.4.

§ 18-29-702.5 Chemical waste system.

A chemical waste system shall be completely separated from the sanitary drainage system. The chemical waste shall be treated in accordance with Section § 18-29-803.2 before discharging to the sanitary drainage system. Separate drainage systems for chemical wastes and vent pipes shall be of an approved material that is resistant to corrosion and degradation for the concentrations of chemicals involved.

§ 18-29-702.5.1 Glass pipe.

All glass pipe shall be of corrosion resistant pre- stressed low expansion borosilicate glass. Couplings shall be made with gasketing of equal corrosion resistant characteristics.

Table § 18-29-702.5.1

§ 18-29-702.5.1.1 Padding.

Padded hangers for horizontal runs shall be used and be properly supported. All riser clamps for vertical line shall be padded with resilient rubber or equally resilient material.

§ 18-29-702.5.1.2 Thickness.

Wall thickness of the glass pipe and fitting shall follow the specifications in Table § 18-29-702.5.1.

§ 18-29-702.5.1.3 Buried pipe.

The pipe to be buried shall be of heavy schedule. Below grade compression couplings shall have an outer shell of A1SI 300 series stainless steel or material of equal corrosion resistance. All piping and fittings shall be free of scratches. Underground piping, fittings and compression couplings shall be protected from direct contact with the earth or backfill material.

§ 18-29-702.6 Safe pan material and construction.

All safe pan material and construction shall meet the requirements set forth in Sections § 18-29-702.6.1 through§ 18-29-702.6.2.

§ 18-29-702.6.1 Material.

Safe pans shall be made only of lead, copper, PVC or fiberglass, and shall meet the following requirements:

  1. Lead sheets for safe pans shall weigh at least four pounds per square foot;
  2. Copper sheets for safe pans shall weigh at least 12 ounces per square foot;
  3. PVC safe pans or liners shall be 30 ml or 40 ml.

§ 18-29-702.6.2 Construction.

All safe pans shall be constructed with preformed dam corners, shall be watertight, adequately reinforced and provided with a drain opening designed to make a watertight joint. PVC safe pans and liners shall be solvent welded together with the proper cement.