Ground Investigation works in Dunshaughlin Co. Meath

Tender description

The ground investigation works comprise of the following: • The Machine Excavation of 5 No. Trial Pits to log road construction materials, natural soils, rock and groundwater (California Bearing Ratio (CBR) measurements to be carried out where feasible); • 12 No. slit trenches • Conduct GPR survey at five separate site locations, one survey at each site, as per contract drawings and Specification S1.13.- 14 - • In-situ testing of soil and groundwater; • Surveying of exploratory hole positions; • Provision of traffic management to accommodate the investigation. • Laboratory testing of soil and rock. • Reinstatement of all slit trenches, inspection pits & trial pits • Liaison with Local Authority, Traders and the other public and private bodies as necessary. • The retention of groundwater, soil and rock samples. • Preparation & presentation of detailed factual reports & drawings as per IS EN 1997 (Eurocode 7) the Specification and the Scope of Works. The investigation will also include carrying out a range of laboratory tests (including chemical testing); in accordance with the provisions of BS 5930: 1990 soil and groundwater as may be required by the Employers Representative. In addition, this investigation will include for analysis and documentation of the results, and reporting on the geology, strata and soil conditions encountered to a professional standard. The Contractor shall provide all plant, labour and materials necessary to carry out the site Investigation as outlined. The excavation, backfilling and reinstatement of all exploratory holes will be the responsibility of the Contractor. Note that where any pavement blocks and setts are removed these are to be preserved stored and labelled and reinstated in locations as removed and re-set. A 150mm layer of lean mix concrete Cement Bound Material Category 3 as per TII specification is to be laid underneath this pavement layer and reinstated like for like.