Maintenance Hole 1200 mm Diameter, Precast Concrete

Manufactured by Forterra

Precast concrete MH, 1200 mm dia. with single offset self lubricating gasket, drop connections, base slabs, flat caps, transitions, risers, monolithic bases, tapered tops. Product Info.

Drainage and Sewer Works | Maintenance Hole, Catch Basin, Ditch Inlet Units and Valve Chambers | Concrete, Precast

Certifications: PMC - Accepted for Use Durham Region Approved Products List

Prequalification Lists: 
Regional Municipality of Durham - - Precast Maintenance Hole Components (MH & CBMH) (PDF)
Regional Municipality of Durham - - Precast Maintenance Hole Components (PDF)
  • Ontario Provincial Standards
    • OPSD 0701.0100 - Precast Concrete Maintenance Hole, 1200 mm Diameter
    • OPSD 0701.0300 - Precast Concrete Maintenance Hole Components, 1200 mm Diameter, Tapered Top and Flat Cap
    • OPSS 1351 - Precast Reinforced Concrete Components for Maintenance Holes, Catch Basins, Ditch Inlets and Valve Chambers
  • American Society for Testing and Materials
    • ASTM C1244-11 - Concrete Sewer Manholes by the Negative Air Pressure (Vacuum) Test Prior to Backfill [Metric]
    • ASTM C443M-12 - Joints for Concrete Pipe and Manholes, Using Rubber Gaskets [Metric]
    • ASTM C478M-15 - Precast Reinforced Concrete Manhole Sections (Metric)
    • ASTM C923M-08b - Resilient Connectors Between Reinforced Concrete Manhole Structures, Pipes, and Laterals (Metric)
  • Canadian Standards Association
  • Other Standards