scope:

PREFACE

The purpose of this manual is to provide the reader with a basic knowledge of the principles and methods for the design, manufacturing, and use of prestressed spun- and static-cast concrete poles for overhead utility line structures. This manual is the result of a multiyear collaborative effort by engineers from electric utilities, consulting fi rms, and manufacturers engaged in the design and application of these structures.

Since the publication in 1987 of the ASCE Guide for the Design and Use of Concrete Poles and the 1994 ASCE-PCI Committee Report "Guide for the Design of Prestressed Concrete Poles," signifi cant advancements and innovations have been realized in concrete pole design and manufacturing technologies. These advancements have propelled the use of concrete poles into an ever-increasing and signifi cant role in the design and construction of overhead utility line structures.

Technological advances have occurred in three key areas. First, the types and quality of the raw materials used in the production of highperformance concrete have improved dramatically. Second, advanced manufacturing methods and equipment to produce high-quality, stronger, and longer length poles are being used. Third, with meaningful research and development (R&D) investment in the technology, signifi cant and innovative enhancements to the engineering design technology of concrete poles are being developed. In addition to their use in distribution, subtransmission, or wood replacement applications, concrete poles are being designed and used in major transmission line projects up to and including 345kV and 500kV transmission lines