RELINING BUILDING SEWERS REHABILITATION OF BUILDING SEWERS AND BUILDING DRAINS
Philadelphia Code § P-718
in effectSECTION P-718 RELINING BUILDING SEWERS REHABILITATION OF BUILDING SEWERS AND BUILDING DRAINS
P-718.1 717.1 General. This section shall govern the relining of existing building sewers and building drainage piping for one- and two-family dwellings. Relining of building sewers for commercial occupancies is prohibited.
P-718.2 717.2 Applicability. The relining of existing building sewers and building drainage piping shall be limited to gravity drainage piping 4 inches (102 mm) in diameter and larger. The relined piping shall be of the same nominal size as the existing piping.
P-718.3 717.3 Preinstallation requirements. Prior to commencement of the relining installation, the existing piping sections to be relined shall be descaled and cleaned. After the cleaning process has occurred and water has been flushed through the system, the piping shall be inspected internally by a recorded video camera survey.
P-718.3.1 717.3.1 Preinstallation recorded video camera survey. The video survey shall include verification of the project address location. The video shall include notations of the cleanout and fitting locations, and the approximate depth of the existing piping. The video shall also include notations of the length of piping at intervals not greater than 25 feet (7620 mm).
P-718.4 717.4 Permitting. A plumbing permit shall be issued by the Department of Licenses and Inspections for this work and the work shall be properly inspected. Proof satisfactory to the Department shall be provided showing that the PA One Call and any other applicable agency has been properly notified prior to issuing a permit for this work. Prior to permit issuance, the code official shall review and evaluate the preinstallation recorded video camera survey to determine if the piping system is capable to be of being relined in accordance with the proposed lining system manufacturer’s installation requirements and applicable referenced standards.
P-718.5 717.5 Prohibited applications. Where review of the preinstallation recorded video camera survey reveals that piping systems are not installed correctly or defects exist, relining shall not be permitted. The defective portions of piping shall be exposed and repaired with pipe and fittings in accordance with this code. Defects shall include, but are not limited to, backgrade or insufficient slope, complete pipe wall deterioration or complete separations such as from tree root invasion or improper support.
P-718.6 717.6 Relining materials. The relining materials shall be manufactured in compliance with applicable standards and certified as required in Section 303. Fold-and-form pipe reline materials shall be manufactured in compliance with ASTM F1504 or ASTM F1871.
P-718.7 717.7 Installation. The installation of relining materials shall be performed in accordance with the manufacturer's installation instructions, applicable referenced standards and this code.
P-718.7.1 717.7.1 Material data report. The installer shall record the data as required by the relining material manufacturer and applicable standards. The recorded data shall include but is not limited to the location of the project, relining material type, amount of product installed and conditions of the installation. A copy of the data report shall be provided to the code official prior to final approval.
P-718.8 717.8 Post-installation recorded video camera survey. The completed, relined piping system shall be inspected internally by a recorded video camera survey after the system has been flushed and flow-tested with water. The video survey shall be submitted to the code official prior to finalization of the permit. The video survey shall be reviewed and evaluated to provide verification that no defects exist. Any defects identified shall be repaired and replaced in accordance with this code.
P-718.9 717.9 Certification. A certification shall be provided in writing to the code official, from the permit holder, that the relining materials have been installed in accordance with the manufacturer’s installation instructions, the applicable standards and this code.
P-718.10 717.10 Approval. Upon verification of compliance with the requirements of Sections P-718.1 717.1 through P-718.9 717.9, the code official shall approve the installation.
Source: City of Philadelphia, The Philadelphia Code and Home Rule Charter (American Legal Publishing, codelibrary.amlegal.com)URL: https://codelibrary.amlegal.com/codes/philadelphia/latest/philadelphia_pa/0-0-0-312632Fetched: 10/27/2026