Tapered Manhole Adjustment Rings

Tapered adjustment rings are concrete elements used to align manhole-cover levels with the surrounding pavement in sewerage, stormwater and other infrastructure chambers. The tapered shape eases installation and distributes loads from the cover into the surrounding structure.

Function

• Level adjustment: Brings the manhole cover flush with the pavement, ensuring safe traffic flow.
• Load distribution: Spreads cover loads evenly to protect the chamber.

Why Tapered?

The tapered form distributes pressure evenly, eases seating during installation and offers long-term stability. A wider contact face on the ground side balances the contact pressure with the substrate.

Application Areas

• Sewerage manhole level adjustment
• Stormwater drainage chamber alignment
• Fine adjustment of manhole covers on roads and sidewalks
• Industrial chamber maintenance and renewal

Advantages

• High-strength concrete for a long service life
• Three height options (6 cm / 10 cm / 20 cm) for flexibility
• Quick on-site level adjustment
• Economical solution for maintenance and renewal

Product Specifications