Note: Page numbers followed by f and t indicate figures and tables.
baseline21
conservative48
DSC clause24
goals21–23
ground characterization table with36
t–37
titems to be addressed in22–23
linking with other contract documents28–29
occurrence of boulders24
parameters for engineering class39
fpayment quantities79
project challenges21
quantitative47
setting27–28
setting data ranges as77
shaft excavation24
for smaller projects58–59
statements23, 25, 76
by tunnel reach42–43
uncertainty25–27
verifiable23–25
Better Contracting for Underground Construction1
case histories81
t–84
tChanged Conditions clauseDiffering Site Condition clause
Code of Federal Regulations (CFR)18
construction manager (CM)54, 74responsibilities of parties
Construction Manager at Risk (CMAR)54delivery alternatives
Construction manager general contractor (CMGC)54delivery alternatives
Contingency Fund8
contractor, the73responsibilities of parties
contractual and legal considerations65
baselines in GBR67–68
DSC entitlement68
entitlement standard66
GBR standing within contract65–66
material difference and compensable claim69
Methods Statement69
relationship to other contract documents66–67
reliance and causation68–69
unforseeability67
delivery alternatives49
additional54–55
Construction Manager at Risk54
Construction manager general contractor54
design-bid-build delivery50
design-build delivery50–51
Early Contractor Involvement54
GBR development approach options49
General contractor construction manager54
progressive design-build delivery53–54
Public–Private Partnership55
success factors49Geotechnical Baseline Report development
design-bid-build (DBB)5
delivery50delivery alternatives
design-build (DB)5
delivery50–51, 78delivery alternatives
Differing Site Condition clause (DSC clause)17, 24, 77
bidding practices77–78
“Entitlement Standard”20
Federal clause17
function of19
historical development17–18
modifications to standard clause19–20
standard clause18
Differing Site Conditions (DSC)3
dispute adjudicator, the74responsibilities of parties
Disputes Review Board (DRB)3, 75
Early Contractor Involvement (ECI)54delivery alternatives
Engineering News Record (ENR)78
Engineer of Record (EOR)14, 49
“Entitlement Standard”20Differing Site Condition clause
Environmental Data Report14
Escrow Bid Documents (EBDs)3, 58
Federal clause17Differing Site Condition clause
GBR for bidding (GBR-B)51
GBR for Contracting (GBR-C)52
General contractor construction manager (GCCM)54delivery alternatives
Geotechnical Baseline Report (GBR)1, 3, 4
bargain5–8
baseline statements in25
benefits of guidelines10
Better Contracting for Underground Construction1
bidding practices77–78
Contingency Fund8
contracts for underground construction projects3
contractual understanding5
DBB project delivery5
development process5
evolution of need for1–2
Geotechnical Site Investigations for Underground Projects2
ground reference conditions4
guideline document scope10–11
guideline publications3–4
improved contracting practices2–3
known unknowns6
May 2022 workshop80
November 2021 workshop80
Port of Miami Tunnel Project8
preparation of6
purpose of4, 8–9
quality of GBRs75
recent practices and lessons learned75–80
reduced levels of site investigation78–79
risk analyses and funding buckets7
frisk assessment6
shortcomings of previous practice9
stages of project development6
Task Committee on4
Geotechnical Baseline Report applications57
baseline parameters for consideration62–63
baselines for smaller projects58–59
effects on subcontractors and impact amplification57
escrow bid documents58
identification of risk factors59–62
items to consider when developing baselines60
t–62
tGeotechnical Baseline Report development49
engineer of record49
GBR-B/C interactive option 151–52
GBR-B interactive option 252–53delivery alternatives
Geotechnical Baseline Report preparation31
baseline parameters for engineering class39
fbaselines by tunnel reach42–43
baseline statements examples44
t–45
tbenefit of ground reference model38–40
conservative baselines48
consistency and compatibility46–47
DBB delivery40, 41
design-related parameters41
formulating contents of GBRs41
GBR outline and checklist32
t–34
tGeotechnical Baseline Report Authorship42
tGeotechnical Design Summary Report40
ground characterization table with baselines36
t–37
tlink with Risk Registers42
one piece of paper approach35–38
organization and content31
owner involvement48
project type38
quantitative baselines47
selection of design parameters40, 41
suggested outline31–35
time and budget for preparation47–48
wording suggestions43–46
writing without ambiguity43, 46
Geotechnical Data Report (GDR)13
contractual hierarchy15
Environmental Data Report14
geotechnical baseline report15
Geotechnical Interpretive Report15
geotechnical memoranda for design14–15
information in13
Geotechnical Design Summary Report (GDSR)3
Geotechnical Interpretive Report15
Geotechnical Site Investigations for Underground Projects2
ground reference model38–40Geotechnical Baseline Report preparation
guaranteed maximum price (GMP)54
Implied Warranty78
International Federation of Consulting Engineers (FIDIC)66
New Engineering Contract (NEC)66
one piece of paper approach35–38Geotechnical Baseline Report preparation
one-sided contracts78
owner, the71–72
owner's engineer72–73responsibilities of parties
Port of Miami Tunnel Project8
progressive design-build (PDB)53–54delivery alternatives
Public–Private Partnership (P3)55delivery alternatives
responsibilities of parties71
construction manager, the74
contractor, the73
dispute adjudicator, the74
owner's engineer72–73
owner, the71–72
Risk Registers42Geotechnical Baseline Report preparation
standard clause18Differing Site Condition clause
Standard Penetration Test (SPT)24
Task Committee on Geotechnical Baseline Reports4Geotechnical Baseline Report
tunnel boring machine (TBM)22
unconfined compressive strength (UCS)46
Underground Technology Research Council (UTRC)2
US National Committee on Tunneling Technology (USNCTT)1
