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Municipal castings
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As traffic speed and frequency increases greater emphasis is being placed on the smooth running of the national and local road network. To help ensure this it is important that the need to reinstate ironwork is avoided but this can only be achieved if the work practices materials, solutions and the specification that govern them evolve and adapt.

Re-work caused by poor workmanship or through a lack of understanding on the correct use of materials is estimated to cost c. £200m per year, a cost that can be reduced significantly if simple rules are followed. 

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As part of its research and development programme Saint-Gobain PAM UK focused on arriving at a solution that will promote a right first time approach to installation. Its key aim to provide a system that will reduce the time taken while enabling efficient use of bedding and reinstatement materials that will ultimately reduce the whole life cost.

The result of this is the development of the Install Plus Frame Levelling System which is engineered to help eliminate the issues faced when installing carriageway access cover and gratings. There are a number of key elements that combine and are key in guaranteeing the durability and long term performance of the installation;

  • Depth of the bedding material is assured by 4 nylon inserts (Fig 1) which are located on the underside of the frame flange which are pre-set to allow for a minimum and consistent depth of bedding mortar of 15mm.
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  • Enveloping of the flange using a flowable bedding material creates a homogenous layer with the material below the flange. By using the bedding indicator on the top of the insert  (fig 2) this ensures the mortar is to the recommended  minimum depth of 20mm above the flange
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  • Frame height, level and gradient It is important that the top of the frame is flush with the surrounding surface. To accommodate changes in gradient and camber further adjustment can be made by rotating 4 nylon bolts (Fig 3) clockwise to raise the frame to the required finished level.  The bolts have a range of adjustment of 15mm to 50mm
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Ironwork frame levelling system - InstallPlus | Saint-Gobain PAM
As part of its research and development programme Saint-Gobain PAM UK focused on arriving at a solution that will promote a right first time approach to installation. Its key aim to provide a system that will reduce the time taken while enabling efficient use of bedding and reinstatement materials that will ultimately reduce the whole life cost. The result of this is the development of the Install Plus Frame Levelling System which is engineered to help eliminate the issues faced when installing carriageway access cover and gratings. There are a number of key elements that combine and are key in guaranteeing the durability and long term performance of the installation
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See also

An interface between the roadway and the network