Section 1, New Buildings to South of Strabane
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Section 1, New Buildings to South of Strabane Ground Investigation Report – Volume 1 Introduction and General Principles September 2010 Document Ref No 718736-0600-R006 Volume 1 of 13 For Department for Regional Development Road Service Ref GW163 Shorefield House 30 Kinnegar Drive Holywood County Down Northern Ireland BT18 9JQ T 028 90424117 F 028 90427039 A5 WTC - Section 1 Ground Investigation Report - Volume 1 Introduction Job_Name4and General Principles Document Control Sheet Project Title A5 Western Transport Corridor Report Title Section 1 – Ground Investigation Report – Volume 1 Introduction and General Principles Report Reference 718736-0600-R-006 Volume 1 of 13 Version A Issue Date September 2010 Record of Issue Version Status Author & Date Checked & Date Authorised & Date A For J Vickers - 24/09/10 K Innes - 24/09/10 D Towell - Comment 24/09/10 A Wheeler - 24/09/10 M Howard - 24/09/10 A Tucker - 24/09/10 © Mouchel 2010 ii 718736-0600-R-006 Volume 1 of 13 - September 2010 A5 WTC - Section 1 Ground Investigation Report - Volume 1 Introduction Job_Name4and General Principles Distribution Organisation Contact Format Copies DRD Roads Service Western C Loughrey – Project pdf 1 Division Sponsor DRD Roads Service HQ W Kerr – Engineering pdf 1 Policy Unit Jacobs L Davison pdf 1 (On behalf of RS HQ) Mouchel P Carey - Section 1 Project pdf 1 Manager Mouchel D Parody - Project pdf 1 Manager Bbm W Diver pdf 1 © Mouchel 2010 iii 718736-0600-R-006 Volume 1 of 13 - September 2010 A5 WTC - Section 1 Ground Investigation Report - Volume 1 Introduction Job_Name4and General Principles Table 1-1 Geotechnical Reports – List of Volumes GIR Report Number Title Start End Volume CH CH 1 718736-0600-R-006 Introduction and General 0 22800 Volume 1 of 13 Principles 2 718736-0600-R-006 Findings of the 0 6560 Volume 2 of 13 Investigation, Section 1A 3 718736-0600-R-006 Findings of the 6560 7260 Volume 3 of 13 Investigation, Section 1B 4 718736-0600-R-006 Findings of the 7260 9870 Volume 4 of 13 Investigation, Section 1C 5 718736-0600-R-006 Findings of the 9870 12340 Volume 5 of 13 Investigation, Section 1D 6 718736-0600-R-006 Findings of the 12340 17040 Volume 6 of 13 Investigation, Section 1E 7 718736-0600-R-006 Findings of the 17040 18680 Volume 7 of 13 Investigation, Section 1F 8 718736-0600-R-006 Findings of the 18680 19550 Volume 8 of 13 Investigation, Section 1G 9 718736-0600-R-006 Findings of the 19550 20880 Volume 9 of 13 Investigation, Section 1H 10 718736-0600-R-006 Findings of the 20880 21300 Vol 10 of 13 Investigation, Section 1I 11 718736-0600-R-006 Findings of the 21300 22800 Volume 11 of 13 Investigation, Section 1J 12 718736-0600-R-006 Environmental Testing 0 22800 Volume 12 of 13 Analysis 13 718736-0600-R-006 Risk Register 0 22800 Volume 13 of 13 This volume is the volume highlighted in bold © Mouchel 2010 iv 718736-0600-R-006 Volume 1 of 13 - September 2010 A5 WTC - Section 1 Ground Investigation Report - Volume 1 Introduction Job_Name4and General Principles LIMITATIONS This report is presented to the Roads Service in respect of the A5 Western Transport Corridor (WTC) – Section 1 and may not be used or relied on by any other person or by the client in relation to any other matters not covered specifically by the scope of this Report. Notwithstanding anything to the contrary contained in the report, Mouchel Limited is obliged to exercise reasonable skill, care and diligence in the performance of the services required by the Roads Service and Mouchel Limited shall not be liable except to the extent that it has failed to exercise reasonable skill, care and diligence, and this report shall be read and construed accordingly. This report has been prepared by Mouchel Limited. No individual is personally liable in connection with the preparation of this report. By receiving this report and acting on it, the client or any other person accepts that no individual is personally liable whether in contract, tort, for breach of statutory duty or otherwise. Mouchel has used reasonable skill, care and diligence in the design and interpretation of the ground investigation, however, the inherent variability of ground conditions allows only definition of the actual conditions at the location and depths of exploratory holes and samples/tests therefrom, while at intermediate locations conditions can only be inferred. New information, changed practices or new legislation may necessitate revised interpretation of the report after the date of its submission. © Mouchel 2010 v 718736-0600-R-006 Volume 1 of 13 - September 2010 A5 WTC - Section 1 Ground Investigation Report - Volume 1 Introduction Job_Name4and General Principles Contents 1 Executive Summary......................................................................................... 10 2 Introduction...................................................................................................... 12 2.1 Description of the Project.......................................................................... 12 2.2 Scope and Objective of the Report ........................................................... 18 2.3 Geotechnical Category of Project ............................................................. 21 2.4 Other Relevant Information....................................................................... 22 3 Existing Information ........................................................................................ 23 3.1 Sources of Information.............................................................................. 23 3.2 Previous Ground Investigations................................................................ 26 4 Field and Laboratory Studies.......................................................................... 28 4.1 Walkover Surveys..................................................................................... 28 4.2 Geomorphological/Geological Mapping .................................................... 29 4.3 Ground Investigation................................................................................. 29 4.4 Drainage Studies...................................................................................... 37 4.5 Geophysical Survey.................................................................................. 37 4.6 Pile Tests.................................................................................................. 37 4.7 Other Field Work ...................................................................................... 37 4.8 Laboratory Investigation ........................................................................... 38 5 Ground Summary ............................................................................................ 41 5.1 Geography................................................................................................ 41 5.2 Topography .............................................................................................. 42 5.3 Historical Development............................................................................. 43 5.4 Mining and Quarrying ............................................................................... 44 5.5 Hydrology ................................................................................................. 45 5.6 Geology.................................................................................................... 45 5.7 Hydrogeology ........................................................................................... 48 5.8 Geomorphology........................................................................................ 50 6 Ground Conditions and Material Properties .................................................. 51 6.1 Introduction............................................................................................... 51 7 Geotechnical Risk............................................................................................ 74 8 Basic Design Philosophy and Methodology.................................................. 75 8.1 Introduction............................................................................................... 75 8.2 Earthworks ............................................................................................... 76 8.3 Highway Structures................................................................................... 92 8.4 Strengthened Earthworks ......................................................................... 93 8.5 Drainage................................................................................................... 93 8.6 Pavement Design, Subgrade and Capping............................................... 94 8.7 Contaminated Land .................................................................................. 96 8.8 Ground Treatment Including Treatment of any Underground Voids etc..... 96 8.9 Specification Appendices.......................................................................... 96 8.10 Instrumentation and Monitoring ................................................................ 96 Principal Symbols ................................................................................................ 97 References.......................................................................................................... 100 © Mouchel 2010 vi 718736-0600-R-006 Volume 1 of 13 - September 2010 A5 WTC - Section 1 Ground Investigation Report - Volume 1 Introduction Job_Name4and General Principles Tables Table 1-1 Geotechnical Reports – List of Volumes.............................................