ENGINEERING MANUAL

Foreword

The Clay Pipe Engineering Manual has been prepared by the National Clay Pipe Institute and is offered by the member manufacturers of the Institute as an aid to those requiring engineering reference data applicable to the design and construction of sewer systems and other projects in which Vitrified Clay Pipe should be used.

Design and construction techniques encountered throughout the country are many and varied. Those described here are considered sound, although it is recognized that there may be other equally satisfactory methods. Technical data presented are considered reliable, but no guarantee is made or liability assumed.

The recommendations in this Manual should not be substituted for the judgment of a professional engineer as to the best way of achieving specific design requirements.

The Engineering Staff of the Institute and of its member companies are available to assist the reader.

Acknowledgements

The National Clay Pipe Institute wishes to acknowledge the following individuals who both individually and collectively have contributed to this edition.

John Butler	Edwin Lamb, P.E.	David Rausch
Gary Freebairn Dr.	Roy Leonard, P.E.	Edward Sikora
Jack Frost, P.E.	Robert Lys Jr., P.E.	Larry Tolby
Jim Hubert	Todd McClave

Equally appreciated are the efforts of the many others who generously gave their time and talent throughout the development of this manual.

NATIONAL CLAY PIPE INSTITUTE
1995

Chapter 1.	VITRIFIED CLAY PIPE . . . AN ENGINEERING MATERIAL
Chapter 2.	GRAVITY SEWER DESIGN
Chapter 3.	CORROSION IN SANITARY SEWERS
Chapter 4.	RIGID CONDUITS, UNDERGROUND
Chapter 5.	TRENCH LOAD TABLES
Chapter 6.	CONSTRUCTION
Chapter 7.	MICROTUNNELING
Chapter 8.	CONSTRUCTION OF SPECIAL STRUCTURES
Chapter 9.	INSPECTION AND TESTING
Chapter 10.	RESIDENTIAL BUILDING SEWERS
Chapter 11.	APPENDIX

NCPI Engineering Manual

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ENGINEERING MANUAL

Foreword

Acknowledgements

TABLE OF CONTENTS