Grade Rings

Perfect Surface Alignment with Precast Grade Rings

When surface grades change or manholes need height adjustment, grade rings provide the precise elevation control your infrastructure requires. Our precast grade rings ensure perfect alignment between underground manholes and surface grade.

WHAT ARE PRECAST GRADE RINGS?

Precast grade rings are concrete rings designed to be placed on top of manholes to adjust their height and align with surface grade. These essential adjustment components solve one of the most common challenges in underground infrastructure—achieving perfect elevation between buried manholes and finished surface levels. Whether you're accommodating grade changes during initial installation, adjusting for road resurfacing, or correcting settlement issues, grade rings provide the precise height adjustment needed without requiring manhole replacement or costly reconstruction.In sewer and stormwater systems, proper surface alignment isn't just aesthetic—it's critical for traffic safety, water management, and system accessibility. Grade rings deliver the flexibility to achieve exact grade matching regardless of site conditions or elevation changes over time.

THE IMPORTANCE OF PROPER GRADE ALIGNMENT

Manholes that sit too high create traffic hazards and potential vehicle damage. Manholes positioned too low collect water, debris, and create safety risks while complicating access during maintenance operations. Grade rings eliminate these problems by providing stackable height adjustment that brings manhole frames to precise surface alignment.This adjustability proves invaluable throughout a manhole's service life. Roads get resurfaced, parking lots are repaved, and ground settlement occurs naturally over time. Rather than replacing entire manhole structures when elevation changes occur, grade rings offer a cost-effective, efficient solution for maintaining proper alignment.

HEIGHT OPTIONS FOR EVERY ADJUSTMENT NEED

We manufacture precast grade rings in a comprehensive range of heights from 2 inches to 24 inches, providing the flexibility to achieve virtually any elevation adjustment:

2" to 6" Heights – Fine adjustment for minor grade changes, resurfacing projects, or precise final alignment during initial installation

8" to 12" Heights – Medium adjustments for moderate grade changes, multi-layer paving projects, or correcting settlement in existing installations

14" to 24" Heights – Substantial elevation changes for major grade modifications, significant resurfacing, or matching manholes to dramatically altered surface levelsThis extensive height range means you can stack multiple rings to achieve exact elevation requirements, building up in precise increments until perfect grade alignment is achieved.

COMPATIBLE DIAMETERS

Diameter matching guarantees proper fit, load distribution, and structural continuity between manholes and grade ring systems, maintaining the full strength and stability of your underground infrastructure.OPENING CONFIGURATIONSEach grade ring features a center opening designed to accommodate manhole frames and provide proper access. Our grade rings come with openings in three inside diameter options:

24-Inch Inside Diameter – Standard opening for typical residential and light commercial manhole frames

30-Inch Inside Diameter – Mid-range option for larger frames and enhanced access requirements

36-Inch Inside Diameter – Maximum opening for large frames and applications requiring expanded access

These opening sizes ensure compatibility with various frame types while maintaining adequate concrete thickness for structural strength and load-bearing capacity.

STACKABLE DESIGN FOR CUSTOM HEIGHTS

The true versatility of grade rings lies in their stackable design. Need 10 inches of height adjustment? Stack a 6-inch ring with a 4-inch ring. Require 18 inches? Combine a 12-inch with a 6-inch ring. This modular approach provides unlimited height adjustment possibilities while simplifying inventory management and providing flexibility for unexpected field conditions.

APPLICATIONS

Grade rings serve critical functions across underground infrastructure:

Sewer Systems – Adjusting manhole heights to match street grades, accommodating resurfacing, and maintaining proper frame alignment for safe access

Stormwater Systems – Ensuring drainage manhole frames sit at correct elevations for optimal water collection and preventing standing water around access points

LEAD TIMES AND ORDERING

Lead times for grade rings vary based on diameter, height, quantity ordered, and other project-specific factors. Our production scheduling coordinates with your installation timeline to ensure grade rings arrive when needed.

WHY CHOOSE OUR PRECAST GRADE RINGS?

✓ Heights from 2" to 24" for precise adjustment

✓ Four diameters matching manhole systems

✓ Three opening sizes: 24", 30", and 36"

✓ Stackable for custom height combinations

✓ Cost-effective alternative to manhole replacement

✓ Engineered for sewer and stormwater applications

✓ Durable precast construction

ACHIEVE PERFECT GRADE ALIGNMENT

Don't let grade misalignment compromise your manhole system. Contact us today to discuss your grade ring requirements, determine the heights and configurations you need, and receive accurate lead time information for your project.