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Description
THE PROJECT The settlement occurred in the backfill of deep micro tunnelling shafts constructed under project DN117-P01 as part of the ‘GAP” group of projects (DN117-P01, DN107-P03 and DN107-P05) constructed by another contractor. The scope of woks including but limited to excavation and disposal of existing backfill material and refill with foam concrete and bring back the surface to their original proposed condition. General Scope of Works The works consists of the following activities: Renovation of the existing road surface at the collapsed manholes including but not limited to asphalt removal, excavation to appropriate formation level, filling by foamed concrete as required by per QCS, removal/reinstallation kerbstone, subbase, road base, wearing coarse, interlock tiles, street lighting cables and road marking all are as applicable: i. Site Clearance ii. Earthworks iii. Backfilling with foam concrete around existing manholes iv. Sub-base v. Flexible Surfacing vi. Kerbing & Footways vii. Traffic Signs & Road Marking viii. Adjustment of Existing Manholes/Chambers Covers
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