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§ 18-29-417.5.1 — Support

Municipal Code of Chicago (2026 S-74, current through Council Journal of June 17, 2026) · Municipal Code of Chicago § 18-29-417.5.1

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18-29-417.5.1 Support.

Floors or receptors under shower compartments shall be laid on, and supported by, a smooth and structurally sound base. Support for shower compartments shall comply with the following requirements: 1. Plasticized polyvinyl chloride (PVC) sheet shall be a minimum of 0.040 inch (1 mm) thick, and shall meet the requirements of ASTM D4551. Sheets shall be joined by solvent welding in accordance with the manufacturer's instructions. 2. Non-plasticized chlorinated polyethylene (PE) sheet shall be a minimum 0.040 inch (1.02 mm) thick. 3. Other materials of similar durability and water resistance may be used provided they are approved by the buildings commissioner.