Manholes Files

Borough of Downington Stops Infiltration

Rick Harris, Borough of Downingtown Water Control Quarterly 1999

  • Like most towns or cities with public sewer systems, Downingtown was experiencing high amounts of inflow and infiltration (I & I).

Magazine Article: How to Plan a Chemical Grout Program

Avanti Public Works Magazine 1995

  • How to plan your chemical grouting program: Most infiltration enters sewers through 1. Manholes, 2. Pipe Joints and 3. Service Connections and the first few feet of the service line.

NASSCO Spec: Performance Specification Guideline for Manhole Rehabilitation

Various NASSCO 2013

  • NASSCO Performance Spec for Manhole Rehab
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