Skip to main content

Tractive Force Design for Self-Cleansing of Sanitary Sewers: Evaluating Design Guidance Based on the Performance of Existing Sewers

Buy Article:

$17.50 plus tax (Refund Policy)

Or sign up for a free trial


The tractive force method is used to design sewers with self-cleansing conditions based on a critical shear stress. The authors have extended the use of the tractive force approach from the design of new sewers to the evaluation of existing sewers under actual conditions. Self-cleansing conditions are assessed by evaluating flow monitor data on a scattergraph using a critical shear stress curve. Existing sewers with adequate selfcleansing conditions are readily identified, as well as those with a potential for silt, sediment, or debris accumulation.

Practical examples from flow monitor locations throughout the United States are provided, demonstrating the application of the tractive force method to existing sewers. The authors applied this method to over 200 existing sewers where flow monitor data were available and compared the results with independent silt observations. Based on these results, the general effectiveness of the tractive force approach for the selfcleansing design of sanitary sewers is validated, and the findings support its use for the self-cleansing design of new sewers.

Keywords: Flow Monitoring; Scattergraph; Self-Cleansing Velocity; Tractive Force

Document Type: Research Article


Publication date: 2010-01-01

More about this publication?
  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

    A subscription to the Proceedings of the Water Environment Federation includes access to most papers presented at the annual WEF Technical Exhibition and Conference (WEFTEC) and other conferences held since 2000. Subscription access begins 12 months after the event and is valid for 12 months from month of purchase. A subscription to the Proceedings of the Water Environment Federation is included in Water Environment Federation (WEF) membership.

    WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access. Access begins 12 months after the conference or event
  • Subscribe to this Title
  • Membership Information
  • About WEF Proceedings
  • WEFTEC Conference Information
  • Learn about the many other WEF member benefits and join today
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more