Concrete Manhole Grade Rings
have been the industry’s “gold standard” in concrete adjustment rings for more than 60 years. The rings are available in multiple diameters and thicknesses, allowing for precision leveling and quick installation. Manufactured using the latest technology and under tight quality control standards, the rings have the strength and durability to stand up to the harshest weather.
Our Rings:
allow for precision leveling and maximum strength.
are the best, most sought after concrete manhole grade rings in the region.
are at the heart of most manhole projects in Minnesota.
have performed admirably under our state's notoriously difficult weather conditions.
A superior, turn-key system
Manhole adjustment is an essential part of any municipal sewer and water project, and it can be difficult to achieve consistent results with the variety of products available to city engineers,
Rather than taking a piecemeal approach to a project, the Eull’s Manhole Shield is a comprehensive system with high-quality components designed to function with one another. In addition to simplifying the installation and maintenance process, a cohesive system eliminates the variables that can lead to failure.
Eull’s Manhole Shield incorporates concrete grade rings, underground mortar, masonry shim strips and an impermeable I-and-I barrier in a single package, ensuring that installation is correct the first time and requiring less ongoing maintenance.
The new system removes the guesswork from installation and produces immediate long-term cost-savings by simplifying the process for long-term durability, reliability and safety.
Preferred Components
Along with best-practice installation techniques, ensuring a proper “fit and finish” is critical for success and durability in any manhole-finishing job. Each of the four components that make up Eull’s Manhole Shield is of the highest quality and contributes to the system’s overall effectiveness.
Eull’s Concrete Manhole Grade Rings:
have been the industry’s “gold standard” in concrete adjustment rings for more than 60 years. The rings are available in multiple diameters and thicknesses, allowing for precision leveling and quick installation. Manufactured using the latest technology and under tight quality control standards, the rings have the strength and durability to stand up to the harshest weather.
Strike Products I&I Barrier:
forms a quick-to-install interior wall to stop moisture from infiltrating the manhole. Its weather- and puncture-resistant design keeps groundwater, mortar and soil out of the manhole, reducing the amount of sediment-filled runoff water municipalities have to treat. The barrier also protects adjusted structures from hydrogen sulfide exposure.
TCC Materials Underground Utility Mortar:
is the equivalent of quality control in a bag – a pre-packaged, air-entrained mortar designed for underground construction. The mortar achieves consistent, predictable performance when mixed with clean water. Formulated for a superior bond, the mortar resists salts and sulfides, and meets or exceeds ASTM C270. Download Specifications:
High-Impact Plastic Shims:
ensure proper slope and fit in every Eull’s Manhole Shield installation, regardless of roadway contours. The shims, which won’t rust or rot, achieve consistent performance because they resist alkalis, chemicals, liquids and microorganism growth.
Download Specifications:
Specifications-Eulls-Manhole-Shield (423 KB)
Eull’s Manufacturing ACI-certified employees perform daily testing to ensure that Eull’s sewer and water products meet or exceed the standards set forth by both the Minnesota and Wisconsin departments of transportation. Our plant’s quality control and quality assurance program is both MnDOT and WisDOT approved.
Download Approval-WisDOT (1.7 MB)
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Adjusting Rings
