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Nov 13, 2006 Repair of Concrete, Reinforced Concrete and Brick Manholes – Part 2: Climbing Aids, Defects, Joints
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Nov 13, 2006 Repair of Concrete, Reinforced Concrete and Brick Manholes – Part 2: Climbing Aids, Defects, Joints
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Aug 01, 2006 Manholes perform a variety of functions, they are used to connect pipelines, to change direction and/or elevation, to provide access for personnel and/or equipment, and to provide aeration and ventilation to the drain and sewer system. Like sewers and pipes, defective manholes need to be repaired. This module covers the repair of climbing aids, the repair of defects, the construction and materials of concrete repair systems and joint repair. After completion of this module, you will have a sound knowledge of:
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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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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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