Windmillcroft Quay Wall Construction and Landscaping Works

Description

Procurement of the Principal Contractor for works that will include partial demolition of existing quay wall, construction of new quay wall in front of existing wall along with creation of new public realm and soft landscaping. Construction works to be undertaken by the Principal Contractor will include, but not limited to, the following main elements: 1) Site establishment and preparation - Undertaking professional visual pre-construction condition survey of the site and including adjacent third party assets such as Kingston Bridge Complex and private residential buildings, with a small number of internal property surveys. - Installing vibration and movement monitoring across site, including for third party assets such as the Kingston Bridge Complex and a private residential development facing the existing quay wall; establishing a baseline for vibration/movement of all assets included in scope - Erecting hoarding and creating site compound - Undertaking and seeking acceptance of any required methodology assessments prior to works commencing 2) Construction Works - Partial demolition of existing masonry perch wall to enable construction of new quay wall within the riverbed; retaining historic materials/features for re-use on site - Creation of new linear single-skin combi-wall frontage along the frontage of Windmillcroft Quay (c.350m), restraint is provided by three separate structural formations of:- a) Western and Eastern peripheries; the tie rod restraint system is restrained by discrete tubular piles. b) Standard wall formation; the tie rod restraint system is restrained by sheet pile anchor walls, and c) Cofferdam wall formation; low-level tie rod and high-level strut reach across and hold together the waterfront wall and a mirroring full height wall to the landward side (including end closure walls). - Creation of new public realm above new quay wall creation, comprising a mix of hard and soft landscaping that includes street lighting, segregated cycleway, street furniture and amenity features - Reinstatement of private landscaped gardens, including use of historical features reclaimed from the existing quay wall 3 Defects - 2 year defects period, during which undertaking of surveys to monitor performance of new structure within the river