A manhole wall rebuilt from inside: 40 bar, a spinning head and a winch
A manhole wall rebuilt from inside: 40 bar of mortar thrown by a spinning head, a winch walking it up the shaft, no open cut.
Application Overview
A 47-second cut of the explainer. The full method, the specs and the throw calculation are on the main video.
English transcript
From the subtitle track delivered with the video. Refer to the video and product documentation for technical details.
The wall of a manhole fails where nobody can see it. Manhole rehabilitation equipment rebuilds that wall from inside the shaft. The set stays at the surface: a worm pump pushes the mortar at forty bar. A spinning head sprays it, and a winch walks it up the shaft. The head throws the mortar outward, not down. It leaves the cup as a spray and reaches the wall as a wet coat. Because the throw is even all the way round, the coat lands on every side of the shaft at once. Now the winch raises the head at zero point one metres a second, which is six metres a minute. The lining is left behind it, from the floor to the rim. A twelve-metre shaft is one pass in about two minutes. Watch the full explainer on our channel.
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