Dismantling a lead factory in Ridder, Kazakhstan
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Over 100 buildings, structures, and utilities were torn down and removed, including a rail bridge (8 meters high and 45 meters long) built over three railway tracks with a turnout. An operating 110 kV electric power transmission line runs over the tracks.
The foundations were removed, and the holes were backfilled with soil to restore the land topography.
4 smokestacks were demolished:
- a 25-meter stack, with mechanized demolition;
- a 35-meter stack, with mechanized demolition;
- a 40-meter stack, with mechanized demolition;
- a 70-meter stack, with specialized blasting operations (foundation diameter 8 meters, top diameter 5 meters, wall thickness at the foundation 1.4 meters).
Construction waste generated by the dismantling was sorted, fragmented to enable transportation, and removed to the landfill site for subsequent recycling (in case of scrap metal) and disposal (in case of concrete and brick rubble).
A new coal boiler house is planned for construction at the site of the demolished lead plant.
Material: reinforced concrete, metal structures, brick lining, in-situ reinforced concrete foundations 10 meters in diameter and up to 2 meters high.