Table Of ContentMonitoring Underground Construction
A best practice guide
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Monitoring Underground Construction
A best practice guide
British Tunnelling Society
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Contents Acknowledgements vii
Executivesummary ix
01 .......................... Introduction 1
1.1. Thepurposeofthisguide 1
1.2. Thescopeofthisguide 1
1.3. Application 2
1.4. TheBritishTunnellingSocietyinterest 2
02 .......................... Objectivesofmonitoring 3
03 .......................... Principlesforplanningeffectivemonitoringsystems 5
3.1. Clientobligations 5
3.2. Engagingstakeholders 5
3.3. Constraints 6
3.4. Processanddeliverables 6
04 .......................... Considerationsfordesigningeffectivemonitoringsystems 9
4.1. Designbasis 9
4.2. Monitoringsystemfunctionalrequirements 9
4.3. Distributionofmonitoring 10
4.4. Accuracy,precisionandrange 10
4.5. Frequencyofmonitoring 10
4.6. Baselinemeasurements 11
4.7. Systemreliabilityandredundancy 12
4.8. Systemverification 12
4.9. Monitoringsystemmaintenancerequirements 13
4.10. Otherfactorsinfluencingthechoiceoftechnology 13
4.11. Requirementsfordataprocessing 14
4.12. Requirementsfordatainterpretationandreview 14
4.13. Requirementsfordatapresentationtostakeholders 14
4.14. Requirementsfordataback-upandarchiving 15
4.15. Requirementsforresponsestomonitoring 15
4.16. Designoutputs 16
05 .......................... Considerationsforoperationandmanagement 17
5.1. Operationalbasis 17
5.2. Personnel,resourcingandcompetency 17
5.3. Demonstrationofcompliancewithrequirements 18
5.4. Dataprocessingandmanagement 18
5.5. Integrationofmonitoringdatawithworks 18
5.6. Datainterpretationandreview 19
5.7. Contingencyplans 19
5.8. Datapresentationtostakeholders 19
5.9. Close-out/completionprocess 19
5.10. Archivingprocess 20
06 .......................... Conclusionsandrecommendations 21
AppendixA................... Glossary 23
AppendixB................... Monitoringsystemspecificationchecklists 31
AppendixC................... Commonmonitoringproblems 37
AppendixD................... Monitoringreportexample 45
AppendixE................... Casestudies 47
E1. Monitoringcasestudy1 47
E2. Monitoringcasestudy2 49
E3. Monitoringcasestudy3 50
E4. Monitoringcasestudy4 51
E5. Monitoringcasestudy5 52
E6. Monitoringcasestudy6 53
AppendixF ................... Bibliography 55
Index 57
v
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Acknowledgements ThisreportwaspreparedbytheBritishTunnellingSocietysubcommitteefor
monitoringofundergroundconstruction.
Membersofthecommittee
DamianMcGirr(Chairman),DonaldsonAssociatesLimited
KeithBowers,TransportforLondon
DavidCook,MottMacDonald
BobAllen,LondonBridgeAssociates
DavidTerry,LondonBridgeAssociates(formerlyMorganSindall)
FrankMimnagh,TransportforLondon
AnneButler,VinciBamNuttall(formerlyMorganSindall)
Peerreviewers
IvanChudleigh,Tubelines
ColinSims,NetworkRail
RandWatkins,TransportforLondon(formerlyMorganSindall)
HelenNattrass,SirRobertMcAlpine
ChrisDulake,CrossrailLimited
EditedfortheBritishTunnellingSocietyby
ShaniWallis,TunnelTalk
vii
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Executive summary Thisguideisintendedtoprovideadviceongoodpracticeforthemonitoringof
undergroundconstructionworks.Itisbasedonexperiencegainedacrossavariety
ofprojectsandisintendedtobeapplicabletofutureundergroundworks,whatever
theirscale.Monitoringisasubjectofparticularimportancetounderground
constructionworks.Itisoftenakeyriskmitigationmeasureforboththecontrol
oftheconstructionprocessandfortheprotectionofexistingassetsaffectedby
excavations.
Itisintendedthatthedocumentwillbebeneficialtoallpartieswhohave
responsibilitiesforactivitiesofthistype.Atvariousstagesintheprojectthiswill
include,amongothers,clients,designersandcontractors.Theguidemayalsobeof
interesttothirdpartieswhoownormanageexistingassetswhichmaybeaffected
byadjacentundergroundworksorbyotherprocessesandwhichrequire
monitoring.
Thesubjectistreatedatthelevelofkeyprinciples.Theguidedoesnotattemptto
addresstechnologicaldetail,whichevolvesovertime.Theguideistherefore
focusedonsettingobjectives,strategicplanningandthehigh-levelspecificationof
monitoringsystems.Itaimstohelpthereaderavoidproblemswhichhavearisenin
thepastduetoomissionsintheseareas.
Theguideisstructuredtoreflectthekeystagesinaproject.Itstartswithobjective
settingandthenaddressesrequirementsforsystemplanning,specification,design,
operationandmanagement.Italsoseekstohighlighttherolesandresponsibilities
ofthevariousstakeholdersateachstage.
Thekeypointsoftheguidearehighlightedinboldwithinthemaintext.Theyalso
formthebasisforachecklist,whichissuggestedasatooltotestmonitoring
systemsforcompliancewithestablishedindustrygoodpractice.
ix
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