Ground Investigations can be undertaken for a number of reasons including:
- To provide information on the contamination status of a site.
- To provide geotechnical information for foundation/floor slab design.
- To provide geotechnical information for road pavement design.
- To provide geotechnical information to help understanding of subsidence/failure of existing buildings and allow appropriate remedial measures to be designed.
- To provide permeability data for soakaway drainage design.
Many sites require both geotechnical and soil contamination investigation. As a result undertaking a combined investigation is often the optimum solution.
For the majority of developments, the most cost-effective way of acquiring the ground data required to design sub-structure and discharge contamination related planning consents is through combined investigations (ground investigations combining more than one aspect). Often the same borehole or trial pit can be used to allow inspection and sampling of the soils for both geo-technical and contamination assessment purposes, allowing a significant cost saving over separate investigations.
It is rare for any two ground investigations to be identical. EMS will be happy to provide proposals and a quote for a appropriate investigation for your development, change of use, or land sale/purchase.
Trial pits provide a simple, cost effective, intrusive investigation to directly reveal foundation conditions, groundwater inflow and any contaminants, obstructions or asbestos. The strength and suitability of foundation material can be determined by simple hand shear vane tests and laboratory classification tests.
Rotary Cores Boreholes are undertaken to confirm bedrock has been encountered and the material is not simply a boulder. Rotary cores of the rock provide an assessment of the quality and strength of the rock for foundation design, ease of excavation and slope stability, ie. in mines and quarries.