Manhole Riser Maintenance

Maintaining Manhole Risers

According to the EPA, there are approximately 12 million sewer and stormwater manholes throughout the United States. These manholes typically correspond to the lengths of blocks within a city, typically spaced between 100 – 250 feet apart. However, it is shocking to find out that nearly 80% of these manholes need some level of maintenance or rehabilitation, according to  .

Common Manhole Riser Issues

In order to ensure a sewer or stormwater system is functioning properly while maintaining public safety, regular manhole maintenance is required. Common manhole riser maintenance tasks include:

  • Making sure there is no trash or debris on the grate opening, in front of a manhole cover or inside a manhole.
  • Ensuring the inside of a manhole is clear of any obstructions such as vegetation, roots, or sediment.
  • Making sure a manhole riser hasn’t developed any cracks or damage.
  • Verifying that a manhole frame is sitting flush on the riser’s rings or is firmly attached to the top slab.
  • Checking that there are no pollutants like gasoline or oil in a manhole.
  • Making sure a manhole cover is properly in place, locked securely, and easy to remove.

WhirlyGig Eliminates The Issue Of Dealing With Mating Surfaces In A Manhole Riser

Since there are no mating surfaces to contend with the WhirlyGig Manhole Riser does not require any maintenance to deal with degradation within the riser stack.  Our thermoplastic form is a monolithic structure which is impervious to the elements and when properly installed will provide at least 25 years of maintenance-free service.

WhirlyGig Manhole Risers

At WhirlyGig, we provide a manhole riser solution that inherent to its design results in a much easier, more cost effective, higher quality and safer installation compared to traditional methods such as concrete grade rings.  With the Whirlygig Manhole Riser solution you “Set it an forget it!” and can expect at least 25 years of maintenance-free service

Want to learn more? Contact WhirlyGig by filling out our online form or call us at 1.800.307.4263. We would love to hear from you and look forward to helping you recognize the value of the WhirlyGig system as the premier manhole riser solution.