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Use of insertion (riser) rings to adjust sanitary manhole castings for roadway resurfacing projects
The Maintenance Department at our local wastewater treatment facility does not allow the use of insertion riser rings for minor manhole adjustments on roadway resurfacing projects (throughout their collection system). Their objections are threefold: The rings tend to pop loose when manhole...- JoeMN
- Thread
- Replies: 6
- Forum: Civil/Environmental engineering general discussion
