UNDERGROUND
Manholes
Precast concrete manholes are an integral component of any modern sewer system. Manhole sections are produced in a controlled environment, thus exhibiting high quality and uniformity. A properly designed and installed precast concrete manhole system provides superior watertight performance and will provide the long-term solution you need.
Standards
ASTM C 443: Specification for Joints for Concrete Pipe and Manholes, Using Rubber Gaskets
ASTM C 478: Specification for Precast Reinforced Concrete Manhole Sections
ASTM C 497: Test Methods for Concrete Pipe, Manhole Sections, or Tile
ASTM C 877: Specification for External Sealing Bands for Concrete Pipe, Manholes and Precast Box Sections
ASTM C 923: Specification for Resilient Connectors Between Reinforced Concrete Manhole Structures, Pipes, and Laterals
ASTM C 990: Specification for Joints for Concrete Pipe, Manholes, and Precast Box Sections Using Preformed Flexible Joint Sealants
ASTM C 1244: Test Method for Concrete Sewer Manholes by the Negative Air Pressure (Vacuum) Test Prior to Backfill
AASHTO M 199M/M 199-05: Precast Reinforced Concrete Manhole Sections
AASHTO T 280: Concrete Pipe, Manhole Sections, or Tile
CSA A257.4: Precast Reinforced Circular Concrete Manhole Sections, Catch Basins, and Fittings
CSA A257.3: Joints for Circular Concrete Sewer and Culvert Pipe, Manhole Sections , and Fittings using rubber Gaskets
ASTM C1821: Manhole installation
