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Precast Manholes

Our precast manholes are built to ASTM C478 standards and designed for efficient access to storm and sanitary sewer systems. Standard diameters range from 48 to 120 inches, and we can fabricate special designs for deep structures, eccentric cones, and various riser configurations. Specifications 48-120 inch diameters, ASTM C478 compliant, custom designs available

Applicable Standards

  • ASTM C478

    Standard Specification for Circular Precast Reinforced Concrete Manhole Sections

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