What's so Great about a Pivoted Turnbuckle?
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Our 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.
Thus, the Manhole Adjusting Ring is forced out against the casting along the
full circumference with this efficient pivoted turnbuckle mechanism.
Thus, the installation resembles a pressed-in bearing. A very
reliable, inexpensive means to bring manholes up to a new grade. All thanks
to our Manhole Adjusting Riser Rings! |
Below are more photos of our unbeatable manhole
riser during the final stages of installation and paving. Our Expandable Manhole Riser, that features a pivoted turnbuckle, has a one inch diametric variance. Finally, we offer one day service for our Manhole Riser!
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