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Head losses at manholes with a 90° bend / by J. Marsalek and B.J. Greck.: En13-5/87-139E-PDF

"Head and pressure changes were studied at manholes with a 90° bend. For pressurized flow, such changes depended only on junction geometry. Among junction parameters, the benching was found particularly important. Full benchings reaching to the pipe crown produced the lowest head losses, particularly when combined with an enlarged pipe diameter at the junction. Head changes in open-channel flow were significantly smaller than those in pressurized flow"--Abstract, page 2.

Permanent link to this Catalogue record:
publications.gc.ca/pub?id=9.870420&sl=0

Publication information
Department/Agency
  • Canada. Environment Canada.
  • National Water Research Institute (Canada). Rivers Research Branch.
  • Canada Centre for Inland Waters.
  • Paul Theil Associates.
TitleHead losses at manholes with a 90° bend / by J. Marsalek and B.J. Greck.
Series title
  • NWRI contribution ; 87-139
Publication typeMonograph - View Master Record
Language[English]
FormatDigital text
Electronic document
Note(s)
  • "RRB-87-32."
  • "This manuscript has been prepared for the Canadian Journal of Civil Engineering."
  • Digitized edition from print [produced by Environment and Climate Change Canada].
  • Includes bibliographical references.
  • Includes a management perspective and abstract in English and French.
Publishing information
  • Burlington, Ontario, Canada : National Water Research Institute, Rivers Research Branch, Canada Centre for Inland Waters ; Brampton, Ontario, Canada : Paul Theil Associates Limited, July 1987.
Author / Contributor
  • Marsalek, J., author.
  • Greck, B. J., author.
Description1 online resource (26 pages, 8 unnumbered pages) : illustrations, graphs.
Catalogue number
  • En13-5/87-139E-PDF
Subject terms
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