Research Article
Jan 1958
Hydraulic Model Study of Hyperion Sewer Interchange
Publication: Transactions of the American Society of Civil Engineers
Volume 123, Issue 1
Abstract
A 1: 20 scale model of the interchange structure at the junction of two outfall sewers approaching the Hyperion Sewage Treatment Plant, Los Angeles, Calif., was tested in accordance with the Froude law. The study was conducted to determine the effects of various flow distributions among the two influent sewers and channels leading to the new and existing headworks. In particular, the configuration of the throat was studied to ascertain whether the interchange could pass the required flows without causing a backing up in either of the outfall sewers.
Maximum storm, peak dry weather, average, and minimum flows were tested for normal operating conditions and for a variety of abnormal conditions with one unit or the other out of service. The best throat design was a combination of a long-pointed tail on the pier at the confluence and a cylindrical nose with a 1-ft radius on the pier facing upstream at the diversion. It was found that energy is transferred by turbulent shear from the fast-moving flow in one sewer to the flow moving slowly through the throat with the result that the energy grade line downstream from the throat is actually higher than that upstream of the throat in the other sewer.
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Information
Published In
Transactions of the American Society of Civil Engineers
Volume 123 • Issue 1 • January 1958
Pages: 908 - 924
Copyright
© 1958 American Society of Civil Engineers.
History
Published in print: Jan 1958
Published online: Feb 10, 2021
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Authors
Affiliations
Alfred C. Ingersoll, M.ASCE
Associate Prof. of Civ. Eng., California Inst. of Technology, Pasadena, Calif.
Hajime Tanaka, AM.ASCE
Project Engr., Belt, Collins & Associates, Honolulu, Hawaii.
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.