Section 3, South of Omagh - Aughnacloy
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Section 3, South of Omagh - Aughnacloy Ground Investigation Report – Volume 1 Introduction and General Principles November 2010 Document Ref No 718736/R/0600/008 Volume 1 of 13 For Department for Regional Development Roads Service Ref GW163 Belfast Shorefield House 30 Kinnegar Drive Holywood County Down BT18 9JQ T 028 90424117 F 028 90427039 A5 Western Transport Corridor - Section 3 Ground Investigation1.1.1.4 Report – Volume 1 Introduction and Job_Name4 General Principles Document Control Sheet Project Title A5 Western Transport Corridor Report Title Section 3 - Ground Investigation Report – Volume 1 Introduction and General Principles Report Reference 718736/R/0600/008 Version A Issue Date November 2010 Record of Issue Version Status Author & Date Checked & Date Authorised & Date A 1st Issue S MCusker 08/10 M Jackson 08/10 D Towell 02/11 M Rea 08/10 A Wheeler 08/10 Distribution Organisation Contact Format Copies DRD Roads Service Western Division C Loughrey – Project PDF 1 Sponsor DRD Roads Service HQ W Kerr – Engineering PDF 1 Policy Unit Jacobs Engineering UK Limited L Davison – Technical PDF 1 Director (on behalf of RS HQ) Mouchel D Parody –Manager PDF 1 © Mouchel 2010 ii 718736//R/0600/008 Vol 1 of 11 A5 Western Transport Corridor - Section 3 Ground Investigation1.1.1.4 Report – Volume 1 Introduction and Job_Name4 General Principles Table 1-1: Geotechnical Reports – List of Volumes GIR Report Number Title Start End Volume CH CH 1 718736-0600-R-008 Introduction and General 61480 93130 Volume 01 of 11 Principles 2 718736-0600-R-008 Findings of the Investigation, Section 61480 64350 Volume 02 of 11 3A: South of Omagh – Drumconnelly Road 3 718736-0600-R-008 Findings of the Investigation, Section 64350 68930 Volume 03 of 11 3B: Drumconnelly Road - Moylagh 4 718736-0600-R-008 Findings of the Investigation, Section 68930 73650 Volume 04 of 11 3C: South of Moylagh- Newtownsaville 5 718736-0600-R-008 Findings of the Investigation, Section 73650 80035 Volume 05 of 11 3D: Newtownsaville - Errigal 6 718736-0600-R-008 Findings of the Investigation, Section 80035 83090 Volume 06 of 11 3E: Errigal – North of Ballygawley Junction 7 718736-0600-R-008 Findings of the Investigation, Section 83090 83900 Volume 07 of 11 3F: Ballygawley Junction 8 718736-0600-R-008 Findings of the Investigation, Section 83900 88575 Volume 08 of 11 3G: South of Ballygawley Junction to Tullyvar 9 718736-0600-R-008 Findings of the Investigation, Section 88575 93130 Volume 09 of 11 3H: Tullyvar - Aughnacloy 10 718736-0600-R-008 Environmental Testing Analysis 61480 93130 Volume 10 of 11 11 718736-0600-R-008 Risk Register 61480 93130 Volume 11 of 11 This Volume (Volume 1) is highlighted in Bold in Table 1-1 above © Mouchel 2010 iii 718736//R/0600/008 Vol 1 of 11 A5 Western Transport Corridor - Section 3 Ground Investigation1.1.1.4 Report – Volume 1 Introduction and Job_Name4 General Principles LIMITATIONS This report is presented to the DRD Roads Service in respect of A5 Western Transport Corridor (WTC) – Section 3 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 DRD 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 iv 718736//R/0600/008 Vol 1 of 11 A5 Western Transport Corridor - Section 3 Ground Investigation1.1.1.4 Report – Volume 1 Introduction and Job_Name4 General Principles Contents 1 Executive Summary........................................................................................... 8 2 Introduction...................................................................................................... 10 2.1 Description of the Project.......................................................................... 10 2.2 Scope and Objective of the Report ........................................................... 16 2.3 Geotechnical Category of Project ............................................................. 18 2.4 Other Relevant Information....................................................................... 18 3 Existing Information........................................................................................ 19 3.1 Sources of Information.............................................................................. 19 3.2 Previous Ground Investigations ................................................................ 22 3.3 Other Relevant Information....................................................................... 22 4 Field and Laboratory Studies.......................................................................... 23 4.1 Walkover Survey ...................................................................................... 23 4.2 Geomorphological/Geological Mapping .................................................... 23 4.3 Ground Investigation ................................................................................ 23 4.4 Drainage Studies...................................................................................... 28 4.5 Geophysical Survey.................................................................................. 28 4.6 Pile Tests.................................................................................................. 29 4.7 Other Field Work ...................................................................................... 29 4.8 Laboratory Investigation ........................................................................... 29 5 Ground Summary ............................................................................................ 32 5.1 Geography................................................................................................ 32 5.2 Topography .............................................................................................. 32 5.3 Historical Development............................................................................. 33 5.4 Man-made Features – Mining and Quarrying............................................ 34 5.5 Hydrology ................................................................................................. 34 5.6 Geology.................................................................................................... 34 5.7 Hydrogeology ........................................................................................... 40 6 Ground Conditions and Material Properties.................................................. 43 6.1 Introduction............................................................................................... 43 7 Geotechnical Risk............................................................................................ 67 8 Basic Design Philosophy and Methodology.................................................. 68 8.1 Introduction............................................................................................... 68 8.2 Earthworks ............................................................................................... 69 8.3 Highway Structures .................................................................................. 84 8.4 Strengthened Earthworks ......................................................................... 85 8.5 Drainage................................................................................................... 85 8.6 Pavement Design, Subgrade and Capping............................................... 86 8.7 Contaminated Land .................................................................................. 88 8.8 Ground Treatment Including Treatment of any Underground Voids etc. ... 88 8.9 Specification Appendices.......................................................................... 88 8.10 Instrumentation and Monitoring ................................................................ 88 Principal Symbols ................................................................................................ 89 References............................................................................................................ 92 © Mouchel 2010 v 718736//R/0600/008 Vol 1 of 11 A5 Western Transport Corridor - Section 3 Ground Investigation1.1.1.4 Report – Volume 1 Introduction and Job_Name4 General Principles Tables Table 1-1: Geotechnical Reports – List of Volumes ............................................iii Table 2-1: Section Limits......................................................................................12