Murray Street Sewer Upgrade

Overview Waimakariri District Council is seeking a contractor for the installation of a DN150 uPVC sewer pipe and associated infrastructure in Murray, George and Queen Streets, in the township of Rangiora. Scope The scope includes: Installation of a DN150 uPVC sewer pipe and associated infrastructure in Murray, George and Queen Streets, Rangiora Bulk earthworks, including clearing and removal of all existing objects within the limits of the earthworks area Locating a dumpsite and negotiating terms of use with affected property owners for the disposal of material Stripping and stockpiling of topsoil on site, or removal to an approved off-site dump Excavation to subgrade to achieve the required depth, grade, level and position for metal courses, including trimming and compaction of the subgrade Cut to fill and borrow to fill operations, including stockpiling of suitable excavated material and disposal of surplus material Undercutting of identified areas and refilling to meet the required compaction standards Removal of unsuitable foundation material and backfilling with granular fill or installation of geotextile, where directed by the Engineer Supply, uplifting, carting, placing, compaction and trimming of AP65 material to form the sub-basecourse Concrete works for kerb and channel, sumps, and concrete surround and haunching for pipes, in accordance with NZS 3109:1997 Concrete Construction Provision of property stormwater outlets, including kerb outlet pipes and house drain inspection boxes, and replacement of existing property stormwater outlet pipes between the new kerb and the property boundary Construction of standard vehicle crossings and heavy duty commercial vehicle crossings, including associated concrete beams Contractor Requirements Tenderers are to be prequalified to a minimum of Tier B of Category 12: Gravity Instructions to Tenderers Tenderers should refer to the tender document for full details of the works and specification requirements.