Geotechnics

Ground investigations and geotechnical instrumentation

M40 Holtage Lane Drilling

An appropriate site investigation is a key element in the management of geotechnical risks.

Halcrow’s approach embodies the following aims:

	thorough desk study of pre-existing information
	geomorphological interpretation of landforms
	phasing of investigations (if practicable) focussing the scope in each phase on the project risks that matter at that stage
	selection of appropriate investigatory / boring technologies
	integration of phasing with regulatory requirements
	ensuring that geotechnical investigations are optimised and cost-effective as a result of:
		thorough desk study of pre-existing information
		geomorphological interpretation of landforms
		phasing of investigations (if practicable) focussing the scope in each phase on the project risks that matter at that stage
		selection of appropriate investigatory / boring technologies
		integration of phasing with regulatory requirements
	specification of appropriate laboratory and in-situ testing, and ground instrumentation, based on a thorough understanding of the geotechnical design requirements
	application of state-of-the-art geophysical techniques (surface and downhole) where likely to be of value, particularly to optimise targeting of exploratory holes
	experienced supervision to ensure quality of sampling procedures and in-situ testing
	efficient management and presentation of data from investigations and instrumentation monitoring, using database software
	interpretation of data by staff with detailed knowledge of local conditions and the requirements of the geotechnical design.