Article
Thrust Restraint Design Equations And Tables
April 5, 2010
•Article: Thrust Restraint Design Equations And Tables
By EBAA Iron Sales, Inc.
These equations and tables are an effort to provide the piping system designer with conservative techniques and parameters for the design of underground restrained joint piping systems. They utilize recognized design equations and conservative soil parameters.
The design equations in this handbook have proven useful in a wide variety of applications since 1982. The soil parameters presented include the results of an extensive study of the actual frictional performance of soils on ductile iron, ductile iron encased with polyethylene, and PVC pipe.
The theory and application of this design method are outlined in a series of "Connections"™ bulletins. These bulletins can be obtained from EBAA Iron Sales. A computer program utilizing all the information provided in these bulletins and this booklet is also available from EBAA Iron Sales.
These equations and soil values have proven conservative over the years and are dependent upon accurate soil identification and classification and good installation procedures and inspection. The ultimate responsibility for the identification of soil type, the proper use of the data provided, the final design, and the inspection of the system must rest with the design engineer.
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