scope:

Preface

This manual is the third edition of AWWA Manual M45, Fiberglass Pipe Design. It provides the reader with both technical and general information to aid in the design, specification, procurement, installation, and understanding of fiberglass pipe and fittings. The manual is a discussion of recommended practice, not an AWWA standard calling for compliance with certain requirements. It is intended for use by utilities and municipalities of all sizes, whether as a reference book or textbook for those not fully familiar with fiberglass pipe and fitting products. Design engineers and consultants may use this manual in preparing plans and specifications for new fiberglass pipe design projects.

The manual covers fiberglass pipe and fitting products and certain appurtenances and their application to practical installations, whether of a standard or special nature. For adequate knowledge of these products, the entire manual should be studied. Readers will also find the manual a useful source of information when assistance is needed with specific or unusual conditions. The manual contains a list of applicable national standards, which may be purchased from the respective standards organizations (e.g., American Water Works Association, American Society for Testing and Materials, etc.).

This third edition includes updates to soil classifications that unify the terminology for all piping materials, corrections to the pressure surge calculations, and editorial changes to improve understanding and clarity of content.