1. Scope

Keywords

Rationale

The approach to designing trash screens is inconsistent, with limited guidance from regulators. Some jurisdictions are starting to regulate trash capture by requiring the treatment of certain rainfall events. A consistent method is needed to calculate the flow through a screen installed in a drainage structure. The techniques allow for testing a section of the screen and determining the hydraulic capacity of the screen in a larger drainage structure without the need for laboratory testing of a full-size structure.