4.1 Land quality – managing ground conditions
This chapter gives guidance on meeting the Technical Requirements for assessing and managing land quality.
Introduction#
This chapter provides a framework for managing geotechnical and contamination risks, with the objective of ensuring that:
- all sites are properly assessed and investigated for potential geotechnical and contamination hazards
- foundations and substructure designs are suitable for the ground conditions
- sites are properly remediated where necessary or appropriate, and design precautions are taken
- appropriate documentation and verification is provided to NHBC.
Clauses for 4.1 Land quality – managing ground conditions
- 4.1.1 Compliance
- 4.1.2 Initial Assessment – desk study (all sites)
- 4.1.3 Initial Assessment – walkover survey (all sites)
- 4.1.4 Initial Assessment – results
- 4.1.5 Basic Investigation (sites where hazards are not identified or suspected)
- 4.1.6 Detailed Investigation (sites where hazards are identified or suspected)
- 4.1.7 Managing the risks (sites where hazards are found)
- 4.1.8 Unforeseen hazards
- 4.1.9 Documentation and verification
- 4.1.10 Guidance for investigations
- 4.1.11 Further information
- Figure reference table
Last updated: 2nd January 2024