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Site equipment Site equipment includes traffic safety, provision and preparation of storage surfaces for equipment and material as well as the provision of power and water supplies.
Maintaining the drainage capability For the purpose of rehabilitation … |
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Sewer cleaning Corroded or loose jointing material, blooms, bulges, foreign matter (e.g. greases or oils) growths, dust and other dirt are removed by means of high-pressure jets with a flushing pressure of maximum 150 bar. Removing loose jointing material The butt and bed joints in the region of the springing line are cleaned out up to a hard underground but not more than 5 cm deep due to the fact that the joint mortar can soften and parts of it can … |
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Re-jointing the previously cleaned-out joints Ground and cleaned joints are re-filled up to the joint underground cavity with the Sewament 40 corrosion-resistant cement mortar of the Mapei Company making sure that there are no bad parts. The material used is first processed with a manually filled hand cartridge filler. The joints are filled-in from a corrosion depth of 1 cm (after cleaning). Creating the fresh mortar For creating the repair mortar, … |
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Injection of cracks in the crown The cement-bound ERGELIT Kombina I injection mortar is mixed using a drilling machine with a stirrer attachment by continuously adding dry mortar and make-up water. After filling the fresh mortar into the pressure vessel, this is sealed and attached to the compressor.
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Injection of cracks in the invert In the sections of the sewage collector to be rehabilitated there are cracks in the sewer invert into which groundwater is infiltrating.
The injection of the invert is carried out using a very quick reacting two-component injection resin specially suited for sealing … |
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Repairing damaged laterals In order to permanently seal laterals that have been provisionally closed with board or other seals and that are no longer in use, first the existing closures of the laterals are removed insofar as they are not situated at least one brick width inside. Any existing cracks in the fittings are exposed with the angle grinder and the re-jointed.
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A final high-pressure flushing is carried out in order to clean the rehabilitated section before acceptance. The sewer is only optically tested for leaks, i.e. it is optically inspected for infiltrating groundwater. The last working step is the cleaning of the construction site. |
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Mar 22, 2011 Repair of an accessible brick sewers and manholes while preserving the exposed masonry by joint rehabilitation and crack injection. |
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(Image: 49785 - Titelbild Dokumentation) Process: Manhole rehabilitation Title: Replacement of a defective manhole top and repair of the surrounding road surface Location: Industrial area Limiting conditions:
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Machines and equipment:
Tools
Materials Following is a summary of the most important materials and components used in this process:
Work safety: Within the scope of the site documentation, there is no explicit … |
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Site equipment Site equipment includes traffic safety, provision and preparation of storage surfaces for equipment and material as well as the provision of power and water supplies. (Image: Compressor) In this case, the supply of water to the construction site is by means of water canisters brought to the site. A power supply is not required. The compressed air for the jackhammer is generated by a petrol-engine compressor. Maintaining the drainage capability |
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Replacement of a defective manhole top by breaking open the asphalt surface For removing the manhole top, first the road surface is chiselled up with a jackhammer around the manhole frame to a width of approximately 20 cm around the frame. The width of the working space is meant to make a professional replacement of the manhole top possible and to allow the placing of paving stones after the replacement of the top thus allowing it to be integrated … |
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Installing the support ring The mortar required for the new support ring is mixed on site in the cement bucket with the shovel. A layer of mortar is applied with the trowel on the top surface of the manhole taper. The support ring is placed on the mortar and the height is controlled by means of a rule and a string. If necessary, the height is adjusted by means of light taps with a hammer on the edge of a piece of wood placed on the support ring to … |
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The last working step is the cleaning of the site. The road surface can be used again approximately 1 hour after the installation of the manhole top.
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Mar 22, 2011 Replacement of a defective manhole top and repair of the surrounding road surface. |
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(Image: 43192 - Titelbild Dokumentation) Procedure: Manhole rehabilitation Title: Replacing the manhole top in a construction road upgraded to a traffic road by means of the SS-01 steel plate system and Shark manhole frame remover Location: Industrial area Limiting values:
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Machines and equipment
Material and help equipment:
Materials: The following materials and components are used in this procedure
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Starting position In an industrial area the upgrading of a long-used asphalted construction road into a traffic road is completed in the scope of development by adding an additional asphalt layer. The necessary raising of the manhole top with the concurrent replacement of the manhole frame and support rings, which have become damaged, is carried out with the aid of the SS-01 steel plate system. For this purpose the manhole top is removed before the … |
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Opening the steel plates The position of the manholes is marked by the sealing plates of the steel cylinder of the SS-01 steel plate system visible in the asphalt layer. The cylinder is opened before drilling out the asphalt layer. For this purpose the hex. nuts are loosened with a wrench and the sealing plate is removed.
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Drilling out and lifting the manhole top region The manhole frame remover, transported to the site on a truck is lifted from the back of the truck by the loading crane and positioned over the manhole. The central alignment of the remover is achieved by the opened cylinder in the steel plate system and the lifting hydraulics in the centre of the drill bitt. The asphalt in the region of the apriori removed damaged manhole top is drilled out while flushing … |
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Installing the new support rings Shrink-free, quick-hardening, de-icing salt-resistant and plastics-reinforced mortar is used for installing the support ring and manhole frame. The mortar is mixed in a mixing bucket shortly before being used on the site. Important: As the mortar is quick-hardening it is important only to mix enough of it for immediate need. A layer of mortar is applied with the trowel on the top surface of the manhole taper for installing … |
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After installing the new manhole frame, the manhole invert is cleaned manually of any asphalt or mortar remains that may have dropped into it during the repair work. The site is cleared. The road surface can be used again approximately 1 hour after the installation of the manhole top. |
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Mar 22, 2011 Repair of manhole top by replacement by means of steel plate system SS-01 and Shark manhole frame remover machine. |
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(Image: 19111 - Titelbild Dokumentation) Process: KM-Inliner Title: Renovation of a vitrified clay sewer DN 250 to DN 350 with the KM-Inliner method Location: Residential district within the road pavement and in front gardens Limiting conditions:
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Use of machines and equipment The technical equipment of the KM-Inliner team for this particular case consists of::
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