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BRITISH STANDARD

Code of practice for site investigations

ICS 91.200

NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW

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BS 5930:1999

BS 5930:1999

Committees responsible for this British Standard
The preparation of this British Standard was entrusted by Technical Committee B/526, Geotechnics, to Subcommittee B/526/1, Strengthened/reinforced soils and other fills, upon which the following bodies were represented: Association of Geotechnical Experts British Geological Survey Chartered Institutionof Water and Environmental Management County Surveyors' Society Department of the Environment, Transport and the Regions Geological Society Institution of Civil Engineers Institution of Structural Engineers Transport Research Laboratory

This British Standard, having been prepared under the direction of the Sector Committee for Building and Civil Engineering (B/-), was published under theauthority of the Standards Committee and comes into effect on 15 October 1999 © BSI 10-1999

Amendments issued since publication Amd. No. Date Comments

First published 1957 Second edition 1981

The following BSI references relate to the work on this standard: Committee reference B/526/1 Draft for comment ISBN 0 580 33059 1

BS 5930:1999

Contents
Page Committees responsible Inside frontcover Foreword viii 1 Scope 1 2 Definitions 1 2.1 soil and rock 1 2.2 ground 1 2.3 made ground 1 2.4 fill 1 2.5 groundwater control 1 3 Normative references 2 4 Safety 2 Section 1. Preliminary considerations 5 Primary objectives 3 6 Procedure 3 6.1 Extent and sequence 3 6.2 Desk study 4 6.3 Site reconnaissance 4 6.4 Detailed examination and special studies (see also annex D) 4 6.5 Construction andperformance appraisal 4 7 Earlier users and state of site 4 7.1 General 4 7.2 Underground mining 5 7.3 Opencast mining 5 7.4 Quarry operations 5 7.5 Waste tips and landfills 5 7.6 Industrial sites 5 7.7 Other earlier use 5 7.8 Ancient monuments 5 7.9 Ecology 5 8 Aerial photographs and satellite imagery 5 8.1 General 5 8.2 Topographical mapping 5 8.3 Identification of features 6 8.4 Earlier uses ofsites 6 8.5 Sophisticated techniques 6 Section 2. Ground investigation 9 Introduction 7 9.1 Objectives 7 9.2 Planning and control 7 9.3 Quality management 8 9.4 Safety 8 10 Types of ground investigation 9 10.1 Sites for new works 9 10.2 Defects or failures of existing works 10 10.3 Safety of existing works 10 10.4 Material for construction purposes 11 11 Geological mapping for ground investigation11 12 Extent of the ground investigation 11 12.1 General 11 12.2 Character and variability of the ground 12

© BSI 10-1999

i

BS 5930:1999

12.3 12.4 12.5 12.6 12.7 12.8 13 13.1 13.2 14 14.1 14.2 14.3 14.4 14.5 14.6 14.7 14.8 14.9 14.10 15 15.1 15.2 15.3 15.4 16 16.1 16.2 16.3 16.4 16.5 16.6 17 17.1 17.2 17.3 17.4 17.5 17.6 17.7 17.8 18 18.1 18.2 18.3 18.4

Nature of the projectPreliminary investigation Location Spacing Depth of exploration Contaminated ground General considerations in the selection of methods of ground investigation Introduction Site considerations The effect of ground conditions on the selection of methods of ground investigation Introduction Non-cohesive soils containing boulders, cobbles or gravel Sand Silt Normally consolidated and lightlyoverconsolidated clay Overconsolidated clays Clay containing gravel, cobbles or boulders Filled ground Rock Discontinuities Aggressive ground conditions Introduction Investigation of potential deterioration of concrete Investigation of potential corrosion of metals Industrial causes of aggressive ground Ground investigations over water Introduction Stages and platforms Floating craft Inter-tidal working...
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