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ENB-4.14 - Sewer and Drainage Facilities Design Manual

Administrative Rule Adopted by Bureau of Environmental Services Pursuant to Rule-Making Authority

The text of the entire manual is available online in PDF format (18 MB). What follows is an excerpt from the Introduction to the manual:
1.1  Introduction

This Sewer and Drainage Facilities Design Manual ("Sewer Design Manual” or “Manual") provides information to assist City staff, Consultants, designers and others who are responsible for planning, designing, constructing, reviewing and approving sewer and drainage facilities within the City of Portland. This 2006 version of the Manual replaces the 1991 Sewer Design Manual.

The Manual provides information on City design standards and criteria. Using and following these standards can expedite a project's preparation, review and approval. These adopted standards help to ensure uniformity throughout the City's sewer and drainage system. Facilities designed in accordance with this Manual will meet the City's performance objectives and improve system operation and maintenance efficiency.

Compliance with these standards does not relieve a designer from the responsibility to apply conservative and sound professional judgment when designing City-owned facilities. All Manual users are responsible to review and verify the applicability of the methods and materials presented herein as they pertain to the specific project under design.

The standards set forth in this document are minimum standards and are intended to assist but not substitute for competent work by design professionals. Designers preparing a project and following these standards shall also take into account such matters as environmental impact, maintenance of pedestrian and vehicular traffic patterns, maintenance of existing and proposed utility services, constructability, system maintenance and sustainability principles. Only when applying these standards and considering other such factors, can public facilities be designed that are both cost effective and that provide long-term economy of operation and maintenance.


2008 Errata Sheet  (PDF Document, 94 kb)
2011 Errata Sheet  (PDF Document, 133 kb)

These appendices are for general reference only and are intended to support the information in the Manual. Where information differs, this Manual and other approved City documents have precedence over these appendices.
Appendix A (PDF document 6,932 kb) : Engineering and Design - Conduits, Culverts and Pipes - U S Army Corp of Engineers, Manual 110-2-2902
Appendix B (PDF document 1,835 kb) : Design Data 40 – Standard Installations and Bedding Factors for the Indirect Design Method – American Concrete Pipe Association
Appendix C (PDF document 6,716 kb) : Deflection: Pipe/Soil Mechanism, Uni-Bell PVC Pipe Association, Uni-TR-1-97
Appendix D-E (PDF document 4,703 kb)
Appendix D  Book 2, Chapter 7, Buried Pipe Design, Chevron-Phillips Chemical Company LP. Performance Pipe Engineering Manual.
Appendix E  Appendix A, Sewer Pipelines. State of Oregon, Department of Environmental Quality, Division 52
Appendix F-K (PDF document 5.87 MB)
Appendix F  Water and Sewer Separation Requirements and Solutions City of Portland Bureau of Water Works 5/21/03
Appendix G  Utilities Installations/Pipeline Installation Procedures for Crossings Union Pacific Railroad
Appendix H  Rules for Sewer Connection, City of Portland, Bureau of Environmental Services (Deleted 8/10/2011)
Appendix I   Inlets and Inlet Leads
Appendix J  Culverts
Appendix K  Chapter 5 Designing and Avoiding Odor and Corrosion in New Wastewater Collections Systems, US Environmental Protection Agency
Appendix L  Sump Systems

Ordinance No. 180469, passed by City Council October 4, 2006 and effective November 3, 2006.
2008 and 2011 Errata Sheets adopted by Director of Bureau of Environmental Services and filed for inclusion in PPD July 11, 2011.
Amended administrative rule adopted by Director of Bureau of Environmental Services and filed for inclusion in PPD December 31, 2013.