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Stormwater Drainage


Belowground sanitary and stormwater sewer piping require access openings by means of a manhole at certain intervals to allow for access, connection points, and change-in-direction points. The manhole is a belowground round or square structure made of precast concrete that allows sewer piping connections near the bottom of the manhole structure. At the street level, an iron access cover (often referred to as a “manhole cover”) is placed to permit access.

Stormwater manhole: This manhole is used on storm-water sewer lines for the conveyance of rainwater. The storm sewer manhole is generally characterized by a larger size, which is dictated by the sewer pipe connection sizes and orientations. Sizes of storm sewer manholes can range from 48” to 120” in diameter and will vary in depth according the depth of the storm sewer piping.

Dolor Sit Amet

  • Overflow protection
  • Low cost
  • Easy installation and maintenance
  • Custom designs available
  • Interior liners available
  • Multiple wet well sizes and profiles 
  • Various access manway covers
  • Variable structure heights and extensions

The manhole is a unit designed for access to an underground utility vault. This product is widely used as an access point for making connections, inspections, valve adjustments, or to perform maintenance on underground utility vaults. Manholes can be seen in either stormwater or wastewater applications, being generally found in urban areas, streets, and sidewalks. ParkUSA also offers custom manhole units that are suitable for almost any application.

Additional Resources

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Transitional Manhole / Junction Box


Manhole - Extra Heavy Duty


Precast concrete Extention Rings


Precast Concrete Square Manhole


Precast Concrete Manholes and Wet wells


Precast Concrete Manhole - Storm sewer 48" - 120"


Hatch Safe Flyer

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