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CP1494-17 A361 and A39 North Devon Link Road Geotechnical Investigation

Devon County Council Published 2 Nov 2017 Contracts Finder

key details

Value£250,000
Statuscomplete
Category (CPV) 71330000
RegionSouth West
Deadline8 Dec 2017
Contract start5 Feb 2018
Contract end21 Dec 2018
Procedureopen
SME suitableYes
OCIDocds-b5fd17-5a9a3804-37dd-4615-84ef-d42558ccabea

Award

SupplierValueDateStatus
Geotechnics Ltd £125,000 8 Jan 2018 active

description

This Contract involves the Geotechnical Investigation into the A361 / A39 North Devon Link Road from the Borner's Bridge Junction at South Molton to the Buckleigh Road Junction near Bideford.

The ground investigation will comprise the following works:

The excavation of mechanically dug trial pits to a maximum depth of 4m or refusal.
Windowless sample borehole drilled by a dynamic sampling rig to depths as given in the Procurement Documents or refusal on rockhead. This is to include in-situ Standard Penetration Testing (SPT) and undisturbed sampling. Hand-dug starter pits shall be excavated at all exploratory borehole locations.
Combine dynamic sample / rotary open hole / rotary cored boreholes to depths as given in the Procurement Documents . This is to include in-situ Standard Penetration Testing (SPT) and undisturbed sampling. Hand-dug starter pits shall be excavated at all exploratory borehole locations.
Excavation of hand-dug trial pits in sides of existing cuttings and removal of vegetation to expose underlying rock mass to facilitate kinematic analysis.
Excavation of hand dug pits at base of cutting where inaccessible to mechanical excavation/boring methods.
Installation of groundwater monitoring standpipes in boreholes to a depth specified by the supervising engineer. Monitoring standpipes shall be 19mm diameter or greater.
In-situ determination of California bearing Ratio (CBR) - to be undertaken using Dynamic Cone Penetration (DCP) equipment. The number and location of DCP tests required to provide sufficient coverage will be determined on site by the Investigation Supervisor.
Groundwater monitoring is to be conducted following the completion of site works at intervals determined by the Investigation Supervisor. All installations shall be monitored to establish the elevation of groundwater.
Geotechnical Laboratory testing on selected samples.
Environmental/Chemical Laboratory testing on selected samples.
Specific borehole requirements and Borehole location plans are detailed within the Procurement Documents.
Provide Devon County Council with a Ground Investigation Report and Interpretation Report, plus design support. The procurement documents are available for unrestricted and full direct access, free of charge, at: http://www.supplyingthesouthwest.org.uk Tenders or requests to participate must be submitted electronically via: http://www.supplyingthesouthwest.org.uk

Additional information: The procurement documents are available for unrestricted and full direct access, free of charge, at: http://www.supplyingthesouthwest.org.uk Tenders or requests to participate must be submitted electronically via: http://www.supplyingthesouthwest.org.uk

documents

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notice history

1 notice published against this procurement.

PublishedTypeRegimeNotice
26 Feb 2018 Award update (awardUpdate) · b2ef4fcb-1799-41ef-b9e7-f64cb0a03e70-201119

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