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Maintenance Holes

More Information

Concrete maintenance holes are available in two basic shapes: circular and rectangular. Rectangular structures are discussed in our Utility Chamber and Monobox MH pages. Circular maintenance holes are available in nominal inside diameters of 1200mm, 1500mm, 1800mm, 2400mm, 3000mm, and 3600mm. The standard depth of bury for precast maintenance holes are 10m to the base, but designs for deeper applications or different live load conditions are available. The standard riser section heights are available in 300mm increments. Each circular MH section is supplied with a single offset joint and a pre-lubricated rubber gasket.

Benefits

  • Not as dependent on the pipe-soil interaction for its structural strength, therefore is not as installation sensitive as other MH materials
  • Available in countless configurations, such as prebenched, precast drop structures, and flexible pipe-to-MH connectors

Applications

Access points and pipe junctions in storm and sanitary gravity sewer systems
Valve chambers for watermain and forcemains
Storm sewer catchbasins and ditch inlets
Lift station wet wells
Stormwater management structures
Sump pits, or underground storage tanks

Specifications

Drawings

Maximum Pipe Sizes for Precast Maintenance Holes 1200mm Diameter Precast Concrete Maintenance Holes (Components) 1500mm Diameter Precast Concrete Single & Twin Inlet Flap Cap 1500mm Diameter Precast Concrete Maintence Holes (Components) 1800mm Diameter Precast Concrete Single & Twin Inlet Flap Cap 1800mm Diameter Precast Concrete Maintence Holes (Components) 2400mm Diameter Precast Concrete Single & Twin Inlet Flap Cap 2400mm Diameter Precast Concrete Maintence Holes (Components) 600 x 1200mm Precast Concrete Ditch Inlet Maintence Holes with 1500mm Diameter Flat Cap 600 x 1200mm Precast Concrete Ditch Inlet Maintence Holes with 1800mm Diameter Flat Cap 600 x 1200mm Precast Concrete Ditch Inlet Maintence Holes with 2400mm Diameter Flat Cap Maintenance Hole Frame & Closed Cover Precast Concrete Maintenance Hole Tee Aluminum Safety Grating for Concrete Maintenance Holes

Contact us today to place your next project on the strongest possible foundations.

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Thank you for your interest.