Precast Grade Rings can be added at vault and manhole access openings to allow the manhole cover to reach grade level. Precast Grade Rings allow for height adjustability of access openings and are available in a variety of diameters and heights for increased flexibility during vault and manhole installation.
- Single Piece Construction
- Offers immediate accessability to maintain and inspect the critical infrastructure
- Customizable sectional design
- Quick and easy install
- Water-based damp-proofing, epoxy-based chemical resistant, and other coating options are available upon request
Model: Grade Risers - 3804, 3806, 3813
Material: Concrete
Load Rating: manholes, components-manholes-2
Measurement System:
Height: Variable
Width: 3’ 2”
Diameter: 3’ 2”
Downloads
PDF: 020-RNDRSRS-2.pdf
DWG: 020-RNDRSRS-2.dwg
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Wilsonville, OR
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