Page 14 - Buried Pipe Design

xii Preface

Chapter 3, Design of Gravity Flow Pipes. Design methods that are
used to determine an installation design for buried gravity flow pipes
are described. Soil types and their uses in pipe embedment and back-
fill are discussed. Design methods are placed in two general classes:
rigid pipe design and flexible pipe design. Pipe performance limits are
given, and recommended safety factors are reviewed. Compaction
techniques, E´ analysis, parallel pipes and trenches, and analytical
methods for predicting performance of buried flexible pipes are topics
discussed. The section on finite element methods for the design of
buried piping systems has been improved for this third edition.
Chapter 4, Design of Pressure Pipes. This chapter deals with the
design methods for buried pressure-pipe installations. Included in this
chapter are specific design techniques for various pressure-piping
products. Methods for determining internal loads, external loads, and
combined loads and strains induced by combined loading are given
along with design bases. The theory for cyclic life of PVC pipe in buried
pressurized flexible pipe has been totally revised to reflect new
research and is also in agreement with the new AWWA C900-2007.
Chapter 5, Rigid Pipe Products. This chapter deals with generic
rigid pipe products. For each product, select standards and material
properties are listed. The standards are from standards organizations
such as the American Water Works Association (AWWA) and American
Society for Testing and Materials (ASTM). Included are the direct
method, design strengths for concrete pipe, and soil-pipe interaction
design and analysis (SPIDA). Actual design examples for the various
products are given. This chapter is essentially the same as in the
second edition.
Chapter 6, Steel and Ductile Iron Flexible Pipe Products. This chap-
ter deals with generic steel and ductile iron pipe products. For each
product, selected standards and material properties are listed. The
standards are from standards organizations such as AWWA and
ASTM. The chapter includes three-dimensional finite element analysis
(FEA) modeling of a corrugated steel pipe arch, tests on spiral ribbed
steel pipe, tests on low-stiffness ribbed steel pipe, and tests on ductile
iron pipe. Actual design examples for the various products are given.
Chapter 7, Plastic Flexible Pipe Products. This chapter deals with
generic plastic pipe products. For each product, selected standards and
material properties are listed. The standards are from standards
organizations such as AWWA and ASTM. Included are long-term
stress relaxation and strain testing of PVC pipes, frozen-in stresses,
cyclic pressures and elevated temperatures, the AWWA study on the use
of PVC, long-term ductility of polyethylene (PE), the environmental stress
crack resistance (ESCR) and notched constant tensile load (NCTL) tests