Drainage Pipe & Products

Products

Maintenance Holes

Uses

Precast Circular Maintenance Holes are used in:

  • Sanitary sewer and storm drain systems for access, observation and junctions
  • Pump stations, wet wells, stormwater management structures and overflow structures

Precast Circular Vertical Structures are used for pump stations, wet wells, stormwater management structures and impoundment overflow structures.

Sizes

Precast Circular Maintenance Holes are normally available in diameters of 1200mm through 3600mm.

Application

Precast Circular Maintenance Holes can be used for the following:

  • Access to the system for maintenance
  • Observation points
  • Changes in pipe size
  • Changes in pipe shape
  • Changes in direction of pipe
  • Junctions for multiple pipes
  • Catch Basin Maintenance Holes
  • Wet wells
  • Sanitary or stormwater pump stations
  • Overflow structures for ponds

Precast Circular Maintenance Holes can be provided with the following features:

  • Protective linings
  • Flexible watertight pipe-to-manhole connections
  • Custom openings
  • Custom flat caps
  • Precast invert channels

Joints

The following joints are normally available for Circular Manholes and Vertical Structures:

  • Single-offset with profile rubber gasket
  • Confined O-ring rubber gasket
  • Preformed mastic or butyl gasket

Applicable Specifications

The following specifications apply to precast circular manholes:

  • CSA Standards CAN/CSA A257.4 Precast Reinforced Circular Concrete Manhole Sections, Catch Basins and Fittings
Grounded In Strength