Townsite Lateral-Stage 2 Belle Fourche Unit - Cheyenne Division Concrete: Pipe with Dumped Bedding and Embedmentby John J. Meyer, Cretex Companies, Inc, Elk River, United States,
James A. Nystrom, Cretex Companies, Inc, Elk River, United States,
Steven K. Wagner, Cretex Companies, Inc, Elk River, United States,
Abstract: In 1933, M. G. Spangler presented three bedding configurations and the concept of a bedding factor to relate the supporting strength of buried concrete pipe to the strength obtained in a three-edge bearing test. Three (types of) beddings, B, C and D, were designated and used for design purposes. In 1970, the American Concrete Pipe Association (ACPA) began a long range research program on the interaction of the buried concrete pipe and soil. The research resulted in the comprehensive finite element computer program, SPIDA, Soil-Pipe Interaction Design & Analysis, for the direct design of buried concrete pipe. Since the early 1980's, SPIDA has been used for a variety of studies, including development of four new Standard Installations, and a simplified microcomputer design program, SIDD, Standard Installations Direct Design.
Subject Headings: Concrete pipes | Soil-pipe interaction | Pipelines | Computer aided design | Strength of materials | Soil analysis | Buried pipes | Soil strength
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