jet grouting - microsoft · jet grouting wentworth institute of technology | beatty hall | boston,...
TRANSCRIPT
haywardbaker.com
Jet GroutingWentworth Institute of Technology | Beatty Hall | Boston, MA
Kevin Dawson, PE, Vice President, New England Area Manager
56
Presentation Overview
• Overview of jet grout underpinning
• Overview of risk and reward of jet grout underpinning
• Project Summary - Holyoke Medical Center
• Conclusions
57
An erosion based
ground improvement
system used to create in
situ cemented
geometries of soil and
binder (Soilcrete).
Jet grouting is…
58
59
60
Existing Footings
~ Soilcrete ~
61
Risks and Rewards of Jet Grout Underpinning
Versus Pit Underpinning
Rewards
• Reduced schedule
• Reduced cost
• Adaptable to challenging
geometry
Risks:
• Heave/settlement
• Ability to measure structure
response and react
62
Risk Reward Relationship
63
Holyoke Medical Center Emergency Department
Expansion
Owner – Holyoke Medical Center
Architect - SMRT
Construction Manager – G. Greene Construction
Site Contractor – A.J. Virgilio
Underpinning Contractor – Hayward Baker, Inc.
64
65
66
Installed Liquid Level Settlement Monitoring
System
67
Test Column Installation
68
Confirmed Geometry
69
Jet Grout Production
70
Drilled Tiebacks Through Soilcrete
71
Final Excavation
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88