The University of the West Indies Organization of American States PROFESSIONAL DEVELOPMENT PROGRAMME: COASTAL INFRASTRUCTURE DESIGN, CONSTRUCTION AND MAINTENANCE A COURSE IN DESIGN OF MARINE STRUCTURES CHAPTER 5 FOUNDATION DESIGN AND CASE STUDIES By DEREK GAY, PhD Lecturer, Civil Engineering Department Faculty of Engineering University of the West Indies St Augustine Campus Trinidad, West Indies Organized by Department of Civil Engineering, The University of the West Indies, in conjunction with Old Dominion University, Norfolk, VA, USA and Coastal Engineering Research Centre, US Army, Corps of Engineers, Vicksburg, MS, USA. Trinidad and Tobago, West Indies, September 24 th – 28 th , 2001
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The University of the West Indies Organization of
American States
PROFESSIONAL DEVELOPMENT PROGRAMME:
COASTAL INFRASTRUCTURE DESIGN, CONSTRUCTION AND MAINTENANCE
A COURSE IN
DESIGN OF MARINE STRUCTURES
CHAPTER 5
FOUNDATION DESIGN AND CASE STUDIES
By DEREK GAY, PhD Lecturer, Civil Engineering Department
Faculty of Engineering University of the West Indies
St Augustine Campus Trinidad, West Indies
Organized by Department of Civil Engineering, The University of the West Indies, in conjunction with Old Dominion University, Norfolk, VA, USA and Coastal Engineering Research Centre, US Army, Corps of Engineers, Vicksburg, MS, USA.
Trinidad and Tobago, West Indies, September 24th – 28th, 2001
Dr Derek GayDepartment of Civil Engineering
UWI.
Typical Mature Volcanic Deposits Deep Ash/Tiff (Tarish) over volcanic
boulder/rock formations
CDCM Sept 24-28 2001
3
Woodford Hill Formation Dominica
0
5
10
15
20
25
30
0 50 100 150SPT (blows/ft)
Dep
th (m
)
CDCM Sept 24-28 2001
4
Dominica Woodford Hill formation
0
50
100
150
200
250
300
10+12
410
+508
10+6
5010
+758
11+0
8311
+088
11+1
9411
+495
11+9
3312
+222
12+24
812
+352
12+5
8612
+778
13+2
6113
+432
Station (m)
Elev
atio
n (m
)
Boulders/Rock Ash/Tiff weathered
Leeward Sea Port in Typical Swamp over Deep Alluvial Deposits
CDCM Sept 24-28 2001
6
16.8
3.0
7.7
2.5
20.0
Fill (working surface)-ve frictional contribution
Soft-very soft silty clays, peat and organics
Loose - medium dense/stifff sands, silts, clays in lenses/pockets and mixed, variable
30.0
Dense/Stiff - very dense/stifff sands, silts, clays in lenses/pockets and mixed, uniform
piezometersplatessettlement
CDCM Sept 24-28 2001
7
Loma Prieta Acceleration Strong Motion Record Diamond Heights