Eastern Garvoge Bridge and Approach Roads - Detailed Ground Investigation Contract No. 1

Tender description

The project involves the construction of a new high quality single carriageway urban distributor road including a new bridge crossing the Garvoge River at the eastern edge of Sligo town. The project will also provide footpaths and cycleways which will link with existing and proposed cycle and footway networks on the east side of Sligo City. The overall scheme is approximately 1.5km long. This contract involves the gathering, manipulation and compilation of ground investigation data to facilitate the design of the Eastern Garvoge Bridge and Approach Roads. The scope of the works envisaged under this ground investigation is as follows:- a) Shell and auger or cable percussion boreholes, sampling and in situ testing. b) Vertical open hole rotary drilling, sampling and in situ testing. c) Rock coring, proving rock to a specified depth and in situ testing. d) Trial pits, sampling and in situ testing. e) Dynamic and Macintosh/ TRL Probing. f) Geophysical Surveying. g) Groundwater pressure testing h) Recording of surface water levels i) Detailed borehole and coring, and logs as described in BS5930 and the specification. j) Laboratory testing of soil samples for engineering properties, behaviour and suitability plus contamination assessment. k) Laboratory testing of rock samples for engineering properties, behaviour and suitability. l) Preparation of detailed Main Factual Report as per BS5930 and the Specification, together with the production of Digital Data to AGS Version 3 (1999) Format. m) Liaison with Sligo County Council and external bodies. n) Accessing existing standpipes and recording water levels. The full Scope of Investigation and the obligations of the Contractor are to be ascertained by reference to the Contract as a whole.