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C478/C478M-22 Standard Specification for Circular Precast Reinforced Concrete Manhole Sections
C923/C923M-20 Standard Specification for Resilient Connectors Between Reinforced Concrete Manhole Structures, Pipes, and Laterals
C1244/C1244M-20 Standard Test Method for Concrete Sewer Manholes by the Negative Air Pressure (Vacuum) Test Prior to Backfill
C1478/C1478M-20 Standard Specification for Storm Drain Resilient Connectors Between Reinforced Concrete Storm Sewer Structures, Pipes, and Laterals
C1821/C1821M-16(2021)e1 Standard Practice for Installation of Underground Circular Precast Concrete Manhole Structures
C478M-19 Standard Specification for Circular Precast Reinforced Concrete Manhole Sections (Metric) (Withdrawn 2020)
C923M-18 Standard Specification for Resilient Connectors Between Reinforced Concrete Manhole Structures, Pipes, and Laterals (Metric) (Withdrawn 2020)
C1244M-11(2017) Standard Test Method for Concrete Sewer Manholes by the Negative Air Pressure (Vacuum) Test Prior to Backfill (Metric) (Withdrawn 2020)
C1478M-19 Standard Specification for Storm Drain Resilient Connectors Between Reinforced Concrete Storm Sewer Structures, Pipes, and Laterals (Metric) (Withdrawn 2020)
