00000nam 2200000zi 4500 9.904423 CaOODSP 20221107180537 m o d f cr |n||||||||| 211026e198608##onca ob f000 0 eng d CaOODSP eng rda CaOODSP eng eng fre En36-539/48-1986E-PDF Marsalek, J., author. Designing better sewer junction manholes / by J. Marsalek. Optimisation des regards de raccordement Burlington, Ontario : Environment Canada, National Water Research Institute = Environnement Canada, Institut national de recherche sur les eaux, August 1986. 1 online resource (6 pages, 3 unnumbered pages) : illustrations. text txt rdacontent computer c rdamedia online resource cr rdacarrier [Unpublished manuscript] Digitized edition from print [produced by Environment and Climate Change Canada]. "Draft." "This paper is to be published in the Civil Engineering-ASCE and the contents are subject to change." Includes bibliographical references (page 6). "Head losses at sewer junction manholes are controlled by both the junction geometry and flow characteristics. Among geometrical parameters, junction benchings were found particularly important and their effects on junction head losses were therefore studied in scale models of selected manholes. The junction manholes studied included manholes with a 90° bend, junctions of a main with a lateral, and junctions of two opposed laterals. Full-pipe depth benchings with U-shape cross-sections proved to be very effective in reducing junction head losses"--Abstract. Includes summary in French. Sewerage. Manholes Design and construction. Égouts. Regards (Travaux publics) Conception et construction. National Water Research Institute (Canada), issuing body. Unpublished manuscript (National Water Research Institute (Canada)) (CaOODSP)9.901451 PDF 473 KB https://publications.gc.ca/collections/collection_2021/eccc/en36-539/En36-539-48-1986-eng.pdf