Inclined Manhole Riser

Inclined Riser

Inclined Riser Top View

Inclined Riser Side View

Our Inclined Manhole Adjusting Riser Rings feature a turnbuckle linkage pivoted at each end to provide the ultimate means to expand a manhole riser. This construction allows efficient application of a screw. A 60 lb. force applied 7’’ from the center of the pivoted turnbuckle exerts a 5,600 lb. tangential force in the Manhole Adjusting Riser Rings that will be bent to fit the out of round, worn manhole opening.


  • Allows you to TILT the utility lid to match the crown of the road
  • Riser heights start at 1-1/2” and increase in 1/4” increments
  • Unique “Pivoted Turnbuckle” design makes installation reliable and quick
  • Reduce utility adjustment cost
  • Eliminate liability of digging up manhole and traffic control
  • Eliminate debris falling into collection system causing a back up
  • Eliminate a patch around the utility producing a nicer looking road that also drives better
  • Environmental friendly by eliminating 500 to 1,000 lbs of material (possibly contaminated) removed around each utility and hauling in new material
  • No dishing, radial cracking or deterioration of asphalt around the utility
  • Coordination between paving crew and utility adjusting crews are eliminated
  • Paved over and lost utilities are eliminated
  • A reliable company manufacturing the highest
  • quality products since 1978
  • Adjustable via our unbeatable pivoted turnbuckle

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