Appendix B contains discussions of ana

l

ytical

procedures used

in

our

engineering analyses. Appendix C

contains a positioning

report

by

Fugro

Chance,

I

nc.,

of

Lafayette, Louisiana

.

•

For the purposes

of discussion and presentation, "driven pipe

pile"

is

used

in

this report

to represent

foundation piles,

caissons and conductors,

unless otherwise

specified.

2.2 FIELD AND LABORATORY

INVESTIGATIONS

The field investigation

was

performed

on Ju

l

y

4

through 6, 2008,

from the

RN

Seaprobe.

The

soil

cond

itio

ns were

determined

by performing

four exploratory borings

,

two at each

SPM location with

one

boring

at

a

selected

anchor

l

eg location, and one

boring

at

the

proposed

PLET location. Enterprise

Field

Services selected

the

boring

locations. These

borings were

drilled to

a penetration of 131-ft

below

mudline.

The water

depths

at

the boring locations ranged from 123 to 125

ft. A chronological summary

of

field

operations

is

presented

in

Appendix

A.

2.2.1

Exploratory Borings

FMMG

personnel

drilled

the

so

il

borings with a

OMX

drill

rig

positioned over

the

centerwell of

the

RN

Seaprobe.

The

vesse

l

was anchored at

the

boring

location by

a 4-point mooring system.

Soil

conditions at

the

site were

exp

lored

by

drilling

a group

of four soil borings

to 131-ft

penetration below the

seafloor. The

final

coordinates for the boring

locations

are presented

in

Table 2-1. A plan of borings within

Block A-59,

of

the

Galveston Area is presented on

Plate

2-1.

Fugro

Chance,

Inc.,

of

Lafayette, Louisiana

,

conducted surveying utilizing STARFIX and

DGPS,

and

performed

a 360-degree scanning sonar survey.

The

positioning report, prepared by

Fugro

Chance,

is

presented

in Appendix C.

The

scanning sonar

reports

are available from

Fugro

Chance

upon

request.

FMMG

Boring

Designation

SPM

#1 PLET

SPM #1 ANCHOR

LEG#2

SPM

#2 PLET

SPM #2

ANCHOR

LEG

#6

Table 2-1:

Final

Boring Coordinates

(Texas South Central Zone Coordinates)

Fugro

Chance

Proposed

Boring

Final Boring

Boring

Coordinates

Coordinates

Designation

Core 3

X

=

3,258,627

.

75

ft

X = 3,258,640

ft

Y =

236,494.60 ft

Y = 236,466

ft

Core

1

X = 3,257,224.19 ft

X = 3,257,200

ft

Y = 236,057.66

ft

Y

=

236,056 ft

Core4

X

=

3,265,632.42

ft

X

=

3,265,647

ft

Y

=

240,337.08 ft

Y = 240,318

ft

Core

2

X = 3,266,735.50

ft

X

=

3,266,

758 ft

Y

=

241,308.73

ft

Y

=

241,331

ft

Boring

Termination

Depth (ft)

131

131

131

131

Samples were

obtained through 5.0-in.-OD, 4.5-in.-lF drill pipe at all

the locations. Samples

were

spaced at 3-ft

intervals

to 20-ft

penetration,

at 5-ft

intervals

to

68-ft

penetration,

and at 10-ft intervals

thereafter to the final boring

depth at the

SPM

#1

ANCHOR LEG #2

and SPM #2

PLET locations

.

Sampling

intervals

at

the

SPM

#1 PLET location

was completed as follows: 3-ft

intervals to

20-ft penetration, 5-ft

intervals to

66-ft

penetration,

and 10-ft

intervals thereafter to the final

boring

depth

.

Sampling intervals

at

the SPM #2 ANCHOR

LEG

#6

l

ocation

was

completed as

follows

:

3-ft intervals

to

20-ft

penetration,

5-ft

I

-

@

-

R

-

e

-

po

_

rt

_

N

_

o

_

. 02

_ _

0

_

1-

-

6

-

50

-

5

2-2

---

------

intervals to 65-ft penetration, and 10-ft intervals thereafter

to

the final boring depth.

The drilling and

sampling techniques used to complete this boring are

exp

lain

ed

in

detail in Appendix

A.

Two

wa

ter

depths were measured at each boring using a seafloor sensor seated in the drill

bit.

The

water depth measurements are

tabul

ated

in Table 2-2. The water depth measurements are intended for

the purpose of the geotechnical

in

vestigation

only, and are not corrected for tidal or other

va

riati

ons

. If

utilized for other purposes, the

water depth

measurement

should

be adjusted

to

account for meteorological

tide and datum corrections. The

water

depths measuring procedures are explained

in detail in Appendix B.

Table 2

-

2: Measured Water Depths

Boring

Water Depth

Time and Date

Supplemental

Time and Date

Designation

(ft)

of Measurement

Water Depth

of Measurement

(ft)

SPM #1 PLET

123

0240 hours

on

123

0720 hours on

July

5,

2008

July

5, 2008

SPM

#1 ANCHOR

123

1440 hours

on

122

2200

hours on

LEG #2

July

4, 2008

July 4, 2008

SPM

#2 PLET

125

1135 hours

on

125

1650 hours on

July

5,

2008

July

5, 2008

SPM #2 ANCHOR

124

0220 hours

on

124

0655 hours on

LEG

#6

July 6, 2008

July

6, 2008

2.2.2

Field and Laboratory Tests

The soil testing program was designed to evaluate pertinent index and engineering properties

of

the

foundation soils

.

During the field operation,

all samples were extruded from the sampler and classified

by

th

e soil

technician or field

eng

ineer

.

Unit weight, Torvane, pocket penetrometer, miniature vane and

unconsolidated-undrained triaxial compression tests

were

performed

in the field on selected cohesive

samples. All

of the samples were

shipped

to Fugro's Houston laboratory where Atterberg limit tests, water

content tests, and grain-size analyses, as well

as

additional density tests, unconsolidated-undrained triaxial

comp

ression

tests, and miniature

vane

tests, were performed.

A description of relevant

lab

ora

tory

procedures

i

s

provided in Appendix A.

The strength

and

classification test results are presented graphically

on the Logs of Boring and Test Results in Section

3.

Grain-size distribution curves from sieve-analysis and stress-strain curves from triaxial compression tests

are presented

in Appendix

A.

2.3

GENERAL SOIL CONDITIONS

2.3.1

Soil Stratigraphy

The soil

strat

i

graphy

at each of the boring locations

disclosed

by the field and

laborat

ory

investigations

is

presented

in Section 3. The soil stratigraphy is based on the classification of soil

samples

recovered from

the

boring and observations

m

ade

during drilling operations. Detailed soil descriptions, for

each location, that include

t

extural

variations and inclusions are noted

on the respective

boring

log

I

-

@

Report No. 0201-6505

2-3

---

.s

....

~

Cl Cl

~

~

'O

'O

Q)

Q)

~

e

Q)

a.

,; a.

'-' <t

X

=

3,2

56,40

0

ft

X

=

3,261,400ft

X

=

3,266,400ft

Y

=

247,000 ft

N

Block

A

-5

Galveston

Area

~

Y

=

242,000 ft

.,,.,.

........

Offshore Terminal

•

/

'

y

=

237,000

ft

I

SPM

#1

PLET \

I

\

SPM

#1

Anch

1

Leg

#2

1

I

\

1,470 ft/

'

/

.....

-

Y

=

232,000 ft

Projection:

Texas

South Central

Zone

Coordinates

PLAN OF

BORINGS

SPM~Anchor Leg #6

.,,.,.

........

/

I

\

I

SPM

#2

PLET \

\

~

I

\

1,470ft~

'

/

.....

__

Texas Offshore Port System

Block

A-59,

Galveston Area

---

i,i

1ii

0

-

v

\

II

\"::'

TERMS AND

SYMBOLS

USED ON

BORING

LOG

SOIL TYPES

SAMPLER TYPES

[!Sand

mSilt

~Clay

~Gravel

~Debr

i

s

~Liae,

0

..

~Th;,.

~'" su,

0

...

Walled

Test

Tube

!ill

Silty

msandy

I

Sandy

~Peat or

VI,

Coral

Sand

Silt

C

l

ay

High

l

y

"

Organic

9

v

9

v

~Clayey

mClayey

mSilty

~p;,100

I

Rock

iShell

~Rock

~No

Sand

Silt

Clay

v

Core

Recovery

v

v

SOIL GRAIN SIZE

U.S

.

STANDARD SIEVE

6"

3"

3/4"

4

10

40

200

B

OULDERS

COBBLES

GRAVEL

SAND

SILT

CLAY

COARSE

FINE

COARSE

MEDIUM

FINE

152

76.2

19

.

1

4.76

2.00

0.420

0.074

0.002

SOIL GRAIN SIZE IN

MILLIMETERS

DENSITY OF GRANULAR SOILS(

2,3

l

STRENGTH OF COHESIVE SOILS(

1

l

Undrained

Shear Strength,

Consistency

Kips Per Sg

Ft

Descriptive

*Relative

T

erm

Density,%

Very

Soft....

..............................................

less than

0.25

Very

L

oose..

...............................................

less than

15

Soft...

.........................................................

0.25

to

0.50

Loose...

...........................................................

15

to 35

Firm.

..........................................................

0.50

to

1.00

Medium Dense.

................................................

35

to

65

Stiff........

....................................................

1.00

to

2.00

Dense..

...........................................................

65

to

85

Very Stiff...

.................................................

2.00

to

4

.0

0

Very Dense

............................................

greater than

85

*Estimated from sampler driving record

Hard.

....................................................

greater than

4.00

SOIL STRUCTURE(

1

l

Slickensided..

........................

Having planes of weakness that

appear

slick and glossy. The degree

of slickensidedness

depends

upon the

spacing

of slickensides and the ease of breaking along these planes.

Fissured.............

...................

Containing shrinkage

or relief

cracks,

often filled with fine sand

or silt,

usually more or

less

vertical.

Pocket....

..............................

Inclusion of material

of

different texture

t

hat is smaller than

the

diameter of the

sample.

Parting.

.................................

Inclusion less than 1/8 inch thick extending through the sample.

Seam.......

.............................

Inclusion 1/8 inch to

3 inches

thick extending through the sample.

L

ayer.

...................................

Inclusion

g

r

eater than

3

i

n

ches thick extending through the sample.

Laminated.........

....................

Soi

l

sample composed

of alternating partings

or

seams

of

different soil types

.

l

nterlayered......

.....................

Soil sample composed of alternating layers

of

different

soil

types

.

Intermixed....

.........................

Soil

sample

composed

of

pockets of different so

i

l types and layered or laminated

structure

is not

evident.

Calcareous

............................

REFERENCES:

(1)

ASTM D

2488

(2)

ASCE

Manual

56 (1976)

(3)

ASTM D

2049

Having appreciable quantities

of

carbonate.

I

nformation

on each boring

log

is a compi

l

ation of subsurface conditions and soil or rock

classifications obtained from the field as

well

as from

laboratory

testing of samp

l

es.

Strata

have been

i

n

te

r

preted

by

commonly accepted

procedures.

The stratum lines on the log may

be t

r

ansitiona

l

and

approximate in

nature.

Water level measurements

refer

on

l

y

to those observed

at

the times and

p

l

aces indicated in

the

text, and may

vary

with time, geologic

condition

or construction activ

i

ty.

I

-

@

Report No.

0201-6505

PLATE

2-2

---

+

l

!

+

~

~

+

•

•

•

C.INC. Si:

1

04

§

LI

NE

S::!103

>,.,._

§

0

,,

Report

No. 0201-6505

-

\~

--

----

"'

"'

"'

no

"'

"'

'"

no

no

no

no

no

'"

+

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,

..

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Anchor Leg #6

i

1

(J)

.

.....

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SPM#2

PLET

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=

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ll

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~

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~

§

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""

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SPM#1 Anchor Leg #2

@

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""

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""'

~

.........

ll

...

'"'

-

+

'

"

~

""

'"

.

--

~~

@

SPM #1 PLET

-

""

'"'

...

'

"'

""'

..,

'"'

..,

l!

ij

l

I

+

+

..

"'

........

"'

"'

...

l!

~

!

~

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'"'

'"'

~.

'"'

'

"'

'

"'

'

"'

--

!!

"

'--

~

"'

"'

~

""

"'

11,

,.

'"

;

~

~;

•

•

"'

•

MAP OF

SOIL BORINGS

AND SUBBOTTOM

PROFILE LINES

Texas Offshore Port System

Block

A

-

59, Galveston Area

t

""'

!I

....

§

-

=

f+

A

"'

.

no

no

"'+

'"

7!

1)

'"

,

..

'+

ll

!!

~

"'

'"'

""

""

'

"

.......

~

~

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+

+

"'

'

"'

"'

..,

ll

~

~

'

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,

..

""

..

+

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..,

..,

""'

ll

~

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+

.........

ll

!!

~

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-

'"'

'

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+

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"

""~

..

~

•

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PLATE

2-3

---

Checkta

c

y.

Dcuc.

LJ1avv1l

By:

1 -

.

,.

:.-,

"

/

u"'".

'irl

.i

r

10

:r

App

r

oved By:

Date:

X

=

3

,2

65,647'

IDENTIFICATION TE

S

TS,[%]

Y

=

240

,

318'

BLOW

20

40

60

80

UNDRAINED

SHEAR STRENGTH

COUNT

{ksf)

Texas South Central

Zone

Coord

i

nates

SUBMERGED UNIT WEIGHT,

[kcf)

0

SEAFLOOR A

T

EL. - 125'

0

.

03

0

.

04

0

.

05

0.06

0

.

5

1

.

0

1

.

5

2

.

0

I

n,

I

SOFT OLIVE GRAY SANDY S

IL

TY CLAYl2.0'l

WOH

.J.

- -

-

D

~

..

0

LOOSE

GRAY SANDY S

IL

T TO S

IL

TY F

INE

SAND

5

•

1•

D

II

..

10

1!1

...

•

-

..

D

10

(12

.

0')

NP

...

u

<>+

10

10

I

SO

FT T

O S

TIFF

OLIVE

GRAY CLAY

1

0

+-

----+

••

D

•

~-

I

10

+-.__ ____

~

.D+

0

.&

.

~

~

-

I

PUSH

Jh

n

--

.

-

h

A

....

~

~

~

20

..

20

•

I

Note:

See

PLATE

3-23b for

detailed

soi

l

I

P

U

SH

rt--

-.o_

~

---

•

.

---- +-

0

~

stra

tigraph

y

to

40-ft

penetration.

-

P

U

SH

+---

---

-8-

....

-+

0

.

~

30

,...__

30

ts

PU

S

H

I

Note

:

NP

-

Non-plastic

i

mater

i

al

i

PUSH

-+

-----

--

•

-+

~

.

-

-with a

few

s

h

ell fragments at 40'

6

-+

"'

-----

-

.

LI-+

v

40

~~

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40

I

4

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,

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50

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1-11!9-

G!jJJ

A

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,

with a

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shell

fragmen

t

s at

59'

12

-

n

()

IA

,~~

-

-

,~

60

60

•

-

w

i

th many

silt

pockets, partings,

a

n

d seams at 63'

P

U

SH

---

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A

•

.&

~

•

-w

i

th

si

lt

pockets

and

partings

at 66'

PUSH

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19-

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A

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70

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Ill

70

80

.ii

P

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SH

12

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0

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12

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A

.&

®

~

i.

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•

-with a few

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nd partings

at 97'

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2

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(f)

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(!)

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0

:.;:::::

(U

110

,.__

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Q)

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silt pockets at

108'

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0

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Q)

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Q)

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120

I

-lean

at 118'

P

U

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D

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d)

+-

--

--

+

-

120

I

-expansive,

w

ith

gas blisters

and a few

~

-

I--

si

l

t

pockets

at

130'

____

__Ll:u.fil

PUS

H

~

_.__

,._

~

UL~

+-§.--

.....----

-

,___

__

-

---

,___

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---

130

130

140

I----

1

40

150

-

150

160

-

160

170

-

1

70

180

-

180

190

I----

190

SAMPLING

TECHNIQUES

CLASSIFICATION

T

ESTS

STRENGTH TESTS

200

200

Number of b

l

ows of a

175

-

lb we

i

ght {hammer) dr

o

p

p

ed a

p

p

rox

i

mately 5 ft to produce a

T

SOLUBILITY

IN

HC

L

,

1

%

]

®

PO

CKET

PENETROM

ET

ER (PP

)

maximum of

24

in.

o

f

penet

rati

on of

a

2.25-in

.-OD

. 2

.

125-in

.

-

lD

th

i

n-walled

tube

•

PERCENT PASS

I

NG

-20

0 S

I

EVE,

[

%]

~

TORV

A

NE (TV)

sampler

.

"P

U

SH

"

denotes a

3

.

00-

i

n.-OD

,

2.83-ln

.

-lD

thin-walled

tube sample

r

was

•

WATER

C

ONTENT

(

W)

,

[%]

<!>

REM

O

TE VANE (RV)

ad

v

anced 24

in

.

with the weight of

the drill

s

tri

ng.

''WOH"

denotes

a 2.50-

i

n.-OD

,

D

SUBMER

G

E

D

UNI

T W

EIGHT (SUW)

+

MINIATURE VA

NE (M

V) (~

R

ES

I

DUA

L (

MVres) VAL

U

E)

2

.

1

2

5-

l

n

.

-

lD liner samplerwas advanced 24

i

n

.

with the

we

i

gh

t

of the hammer

.

.._ U

NCm,

S

O

LIDA

TED UNDRA

I

NED

T

RIA

X

IAL {UU)

PLASTIC

LI

MIT (PL)

LI

QU

I

D LIM

I

T

{

L

L

)

+

------------

------

----

+

(Open s

y

mbols

i

ndicate

r

emolded (r

)

tests)

LOG OF BORING

AND TEST

RESULTS

Texas Offshore Port System, SPM

#2

PLET

Block A-59, Galveston Area

---

I

@

:;o

CD

"C

0

;:i.

z

~

0

N

....

0

6,

01

0

01

p

Q)

~

..:

0

0

i.:::

Q)

ro

Cl)

3

0

Q)

Cl'.)

c::

.

-

cu

....

Q

Q)

c::

a..

Q)

-=-

-

o

_,

_

Da

te.

-.tJ-

1

..

_

_

-

Dat

e

:

"-

//J'

h

-

-.,heckec. "'.

/9"2

Approved By:

;?~

X

=

3,265,64

7'

I

DE

NT

IF

I

CATION TESTS,

[%J

Y

=

240,318'

BLOW

20

4

0

60

80

COUNT

l

Texas Sout

h

Central

Z

o

n

e Coord

in

a

t

es

S

UBMERG

E

D UNI

T

WEIG

H

T,

[

kcf]

0

S

EA

FLOOR

AT

E

L.

-

125'

0.

0

3

0.04

0.05

0.06

I

.1,;o

SOFT O

LI

V

E

GRAY SA

N

DY S

IL

TY CLAY

WOH

~

-

-

D

w

it

h m

a

n

v she

ll fr

a

nm

e

nt

s

12.0

'

)

+

+

•

•

..

~

L

OOS

E

G

RA

Y SAN

D

Y S

ILT TO

S

IL

TY F

I

NE

SA

N

D

5

-

wi

t

h

many

s

h

ell fragments

to

5

'

5

._

-

-

Lo.a

-

with clay

p

ocke

t

s,

p

a

rtin

gs, an

d

seams below

6'

II

-

w

i

t

h m

ic

a

a

nd she

ll fr

a

g

m

ents at

7'

1

0

•

•

D

10

._

10

N

P

•••

D

~

I

1

1

2.0'l

S

OFT T

O S

TIFF

OLIV

E G

RAY CLAY

-l

ean, with sand t

o

14

'

10

D

+

~

---+

••

•

15

._

I

-w

i

t

h

sa

n

d

p

oc

k

e

t

s,

15

'

to

39

'

1

0

+-

~

----

~

.9+

20

I

PUS

H

._

J

o

o

•

tJ

-

I

-w

i

t

h

sa

nd partin

gs

,

23'

to

39'

PUSH

f+-.--_g-

•

L...- _

_

__

25

.

----

fl-

._

Ill

..

PUSH

ft--

--

-

'-

8-

....

'--+

30

-

35

~

!No

t

e:

NP -

N

o

n

-

pl

astic

I

m

a

ter

i

al

PUSH

._

•

PUSH

+

-----

--

•

-+

•

-

wit

h m

a

n

y sand pocke

t

s a

nd

pa

rt

in

g

s,

39

'

t

o

60

'

6

SAM

PLI

NG

TE

CH

NI

Q

UE

S

CLASS

IF

ICA

T

IO

N T

ES

T

S

40

Number o

f b

lows of a 175-lb we

i

ght

(ham

m

e

r

)

dr

opped appro

xi

mate

l

y

5

ft to

pro

d

uce a

...

SOLUBI

LI

TY IN HC

L,

[

%

]

maxim

u

m

of

24

i

n. of

pe

n

etration of a 2

.

25-in.-OD, 2.

1

25-i

n

.-lD

thin-walled tube

•

PERCENT PASSING -200 S

IE

VE,[%]

sam

pl

e

r

.

"PUSH

" d

enotes a

3.00-in.-OD,

2.83-in.-lD

thin

-

walled

tube sampler was

•

WA

T

ER

CONTENT (W), [%]

advanced 24

in.

with the weig

h

t o

f

the drill string. 'WOH"

d

e

n

otes a 2.50-in.-OD

,

D

SUBMER

G

ED UNIT WEIGHT (SUW)

2

.12

5

-in.-lD

liner samp

l

er was adva

n

ce

d

24

in.

with the weight ofthe hammer

.

PLASTIC LIMIT

(PL)

LIQUID

LIMIT

(LL)

+-----

-

--

-

-------------

+

LOG OF BOR

I

NG A

N

D

T

EST RESULTS

Te

x

as Off

s

hore Port

S

ystem

,

SPM #2 PLET

Bloc

k

A-59

,

Gal

v

e

s

ton Are

a

"-', ....

n

il

.3y: rrc,

,

"1;()'

UNDRAIN

E

D SH

E

AR STR

E

NGT

H

[

ksf]

0.

2

0.4

0.6

0.8

0

~<>

•

•

5

10

<>

~

p

Q)

~

~

.~

15

.....:-

0

0

<>

....

~

t;:::

ro

•

Q)

Cl)

2

0

3

0

.~

/::,.

...

~

-

...

Q)

al

c::

0

:.::.

<>

IA~

25

ro

-

....

Q)

c::

Q)

<>

•

a..

~

3

0

35

.

~

•

S

TR

ENG

T

H TES

T

S

40

®

P

OCKET PENETROMETER (PP)

+ TORVANE

(iV)

~

REMOTE

VANE (RV)

+ MINIATURE VANE

(MV) (~

RESIDUAL

(MVres)

VALU

E

)

.& UNCONSOLIDATE

D

UNDRAINE

D

TRIAXIAL

(UU)

(Open symbols ind

i

cate

r

emolded [r) tests)

---

Oifset:

0.09

0

.

11

w

l

.rt

1

p

.

MSEC

-

25

FEEl'

.

\

i.

.

,,

~

•

j

C

L

A

SS

IFICATION

TE

S

T

S

..,

SOLUBILITY IN

HC

t

, ['!.]

•

FERCENT

PASSING

:200 SIEVE, ('.

~!

e

WA

i

ER

CONTENT

(I'l

l,

r.

.

\

]

O

SUSME

R

GEO Utm WE1eH

T

(

S

UW)

1•

.

PLASTIC UI.II

T

(

P

l

)

LI

Q

UID

LIM

IT

(LL)

:

----------------------+

-@--

R

_

e

_

p

_

o

_

rt

_

N

_

o

_

.

0

_

2

_

0

_

1

_

-6

_

5

_

o

_

s

__

~

1

2500

::

.

'

'

'

STRENGTH TESTS

®

POCKET PENETROMET:R !P?)

<!> "i"ORVAN:

(TV

)

¢,

R:MOTE VANE

{

RV)

'

.'.

:1,

.

(

:

;

..

!

i

.''

.

+

t,IINIATURE

VANE (MV) l~

R:SIDUAL

(MV,.,

l

VALUE

)

A

UNCONSO

ll

DATa:O UNDR

le

N:O

TfCA)QAL (UU

)

180

_

_;

fo

a

.,.._

..._~

,

.i

~

ll'Nl1

rrw

~

~--~1

...

1

,M

l

l

W

'

iDl

5HQR

$

l

~

TH

...,

..

.

..

GEOPHYSICAL

AND GEOTECHNICAL

INTEGRATION

Texas

Offshore

Port

System, SPM #2

PLET

Block

A-59,Galveston Area

1

•

r

.

-

.

'

.

.

'

;

..

~

.

-

..

---

~

125

M

ETERS

410

FT

Portion of Subbottorn

Profiler

Line

2107

1~500

E

.050

.060

.070

.080

.090

.100

.110

.1

20

PLATE 3-24

---

rl

~

k

I

~

\

~

;,.:.

[I)

~

0

Shear Strength Profile, [ksf]

0.5

1.0

1.5

N

ot

e: Rom

a

n nu

m

eral

s

re

f

er to t

h

e s

tr

a

ti

gra

p

h

y

as

des

c

ribed in the te

xt

and on the b

o

ring l

o

g

.

2.0

2

.

5

Ill

140

._______.......________________________........________.

(

Report No

.

0201

-

6

5

0

5

-

@

--

DESIGN STRENGTH PARAMETERS

Texas Offshore Port System, SPM #2 PLET

Block A

-

59, Galveston Area

PLATE

3

-25

---

I

~

I

~

1

{

I

~

>,

I

m

"O

Q)

""'

'

Q)

u

.c

(.}

!

l

>,

m

"O

Q)

e

>

a.

<t;

~

Q)

~

L..-

0

0

----

-

Submerged Unit Weight

,

[kcf]

0

.

00

0.02

0.04

0.06

0

.

08

0.10

0

--------------------------------------------------

_____

_....--+-----

II

---

-+----

Note

:

Roman

numerals refer to the

stratigraphy as

described

i

n the te

xt

and on

the

boring

l

og.

401-------+---

--f--\----+-

--

--+--~--1

cu

60

Q)

CJ)

3:

0

Q)

m

Ill

§

80

----

--+--~~~~

+--~~

--

-

+-----

~+--~~~____.

~

ro

L..

-

Q)

c

Q)

a..

140

..._________________________________________...

DESIGN SUBMERGED

UNIT WEIGHT

Texas Offshore

Port

System, SPM

#2

PLET

Block

A

-

59, Galveston Area

\

Report

No

.

0201

-65

05

-

@

-

PLATE

3-26

-

-------------

-

--

-

- - - -------

---

(

'

l

~

~

>,

[D

'O

0)

.><

~

;.:.

[D

,:,

0)

>

Un

i

t Skin

Friction,

[ksf]

0.5

1.0

1.5

Notes:

1. Roman

numerals

refer

to

the stratigraphy

as

described in the text and on the

boring

log

.

2. Tension and compression

curves coincide.

2

.

0

2.5

II

Ill

e

0

0)

Q.

.c

Q.

140._

______________....,________________________...

(.)

<(

i

Report No. 0201-6505

-

@

~~

UNIT SKIN FRICTION

API RP

2A (2000) Method

Texas Offshore Port System, SPM #2 PLET

Block A-59, Galveston

Area

PLATE3-27

---

~

Q)

~

..__-

0

0

ti=

ca

Q)

U)

3:

0

co

Q)

c

0

:..::::;

-

~

Q)

c

Q)

a..

Unit

E

nd

Bearing,

[ksf]

0

5

10

15

20

25

0

.---..---......--------------------------------.....-----

II

Not

es:

1

.

Roman numerals

re

fer

to the

stratigra

p

hy

as

des

cribe

d in

the

text and

on

the boring

log

.

40

---

-

-

---+----.

___

_,__-.,

2.

Dashed

line

represents equivalent unit end

bearing available from

f

riction

al

resistance

of soil

plug inside

the

ind

icate

d pile

size.

3.

End

bearing component is

neglected

for

caissons and conductors.

Ill

140

.._______...______.....,.__________________________.

UNIT

END BEARING

API RP 2A (2000) Method

.

Texas Offshore Port System,

SPM #2 PLET

Block A-59, Galveston Area

Report No.

0201-6505

-@---

PLATE

3-28

---

PENETRATION

BELOW

CURVE POINTS

MUDLINE

(feet)

1

2

3

4

5

6

0

.

0

t

0.00

0

.

00

0

.

00

0.00

0.00

0.00

z

0.00

0

.

04

0.0

7

0

.

14

0.

19

0.24

1

.0

t

0.00

0.03

0.04

0.06

0

.

08

0

.

09

z

0.00

0.04

0.07

0.14

0

.19

0

.24

2.0

t

0.00

0.03

0.05

0

.08

0

.

09

0.10

z

0

.

00

0

.

04

0

.

07

0

.14

0

.19

0.24

2.0

t

0

.00

0.02

0

.

02

z

0

.0

0

0.10

24.00

12.0

t

0

.

00

0.15

0.15

z

0

.00

0.10

24.00

12.0

t

0.00

0

.

09

0

.

15

0.23

0.28

0.31

z

0.00

0

.

04

0

.

07

0

.1

4

0

.

1

9

0

.2

4

24.0

t

0.00

0

.

13

0.22

0

.

34

0.40

0.45

z

0.00

0.04

0.07

0

.

14

0.19

0.24

54.

0

t

0.00

0.2

3

0.39

0.58

0.70

0

.78

z

0.00

0

.0

4

0.07

0.14

0.19

0

.24

60.0

t

0.00

0

.26

0.43

0

.

64

0.77

0.85

z

0.00

0

.

04

0

.07

0

.14

0.19

0

.2

4

66.0

t

0

.

00

0.28

0.46

0.69

0.83

0

.92

z

0

.

00

0

.

04

0.07

0.14

0.19

0

.

24

80.0

t

0.00

0

.3

3

0.54

0.82

0.98

1.09

z

0.00

0

.

04

0.07

0.14

0.19

0

.2

4

109

.0

t

0.00

0.43

0.7

1

1.07

1.29

1.4

3

z

0

.0

0

0.04

0.07

0.14

0.19

0.24

119

.

0

t

0.00

0.46

0.77

1.16

1.39

1

.5

5

z

0.00

0

.

04

0

.07

0.14

0

.19

0.24

131.0

t

0.

00

0

.

51

0.84

1

.26

1.52

1.69

z

0

.

00

0.04

0

.07

0.14

0.

19

0.24

(()

>.

(()

>.

'C

"C

.,

~

N

otes:

1

.

"

t

"

is

mobilized

so

il

-pile

adhesion, [ksf].

"".,u

ec.

.c

c.

2. "

z

" i

s

axial

pile

displacement,

[in

.

]

.

u

<i:

3.

Data

for t

ens

ion

and

com

pres

sion

coinc

id

e

.

AXIAL LOAD

TRANSFER DATA

(T-Z DATA)

API RP

2A (2000) Method

24-in

.-

Diameter

Driven Pipe Piles

Texas

Offshore

Port

System

,

SPM #2 PLET

Block

A-59, Galveston

Area

I

R

e

port

No

.

0201-6505

-

@

---

7

8

0.00

0.00

0.48

2

4

.

00

0

.

08

0

.

08

0.48

24

.

00

0.09

0.09

0.48

24.00

0

.28

0.28

0.48

24

.00

0.40

0

.40

0.48

24.00

0.70

0.70

0.48

24

.0

0

0.77

0.77

0.48

24.00

0.83

0.83

0.48

2

4

.00

0.98

0.98

0.48

2

4

.

00

1.29

1

.

29

0.48

24.00

1

.

39

1

.39

0.48

24.00

1.52

1.52

0.48

24.00

PLA

TE

3-30

---

I

1

g

PENETRAT

I

ON

BELOW

CURVE

POINTS

MUDLINE

(feet)

1

2

3

4

5

40.0

Q

0

6

12

18

21

z

0

.

00

0

.

05

0

.3

1

1.01

1.75

131

.

0

Q

0

12

25

37

45

z

0.00

0

.0

5

0.31

1.01

1

.75

Notes:

1. "Q" is

mobilized e

nd

bearing capacity,

[kips].

2.

"z"

is

axial

tip displacement, [in.].

AXIAL

LOAD TRANSFER

DATA

(Q

-Z

DATA)

API RP

2A (2000) Method

24

-

in

.

-Diameter Driven

Pipe

Piles

Texas Offshore

Port

System, SPM #2 PLET

Block

A

-

59, Galveston Area

-

@

Rep

ort

No.

0201-6505

6

7

24

24

2.40

2

4.00

49

49

2.40

24.00

PLATE

3-31

---

(

I

""

~

(

t

'fP

I

i

~

[

6i'

0

~

I

-

@

eport No

.

0201-6505

~

Penetration

0

,-------------

2'

~-

--

----~

Loose sandy silt to

silty

fine sand

Scour to

5'

5'

-

-

-

-

-

-

-

-

-

k

=

.

10 pci

12'

---------

Soft

to

stiff

clay

E

50

=

1

.

5

%

at

12'

decreasing linearly to

E50 =

1

.

0

%

at 100

'

100'

-

-

-

-

-

-

-

-

-

Notes:

1

.

Eso is a

x

ial strain at half of peak deviator

stress

for

cohesive soils.

2

.

Soil strength parameters are shown on Plate

3-25

.

3.

Submerged unit weight profile is shown on Plate 3-26

.

4.

k

is the modulus of horizontal subgrade reaction for granular

soils.

STRATIGRAPHY

AND

PARAMETERS FOR

P-Y

DATA

Texas Offshore Port System,

SPM

#2 PLET

Block A

-

59, Galveston Area

PLATE

3-32

---

!?

t1J

I

~

I

~

!

I

t

~

"C

"C

Q)

Q)

t5

e

.,

0..

.c

0..

(.)

~

PENETRATI

O

N

BELOW

CURVE POINTS

MUDLINE

(

feet)

1

2

3

4

5

6

0.0

p

0

0

y

0

.

00

24

.

00

5

.

0

p

0

0

y

0.00

24

.

00

7

.

0

p

0

28

47

61

77

88

y

0.00

0.07

0.12

0

.

17

0.25

0

.

39

9

.

0

p

0

82

1

3

7

181

227

260

y

0.00

0

.

10

0

.

17

0

.

25

0.37

0

.

57

12

.

0

p

0

189

315

416

523

598

y

0

.

00

0

.

14

0

.

24

0

.

35

0.52

0

.

80

12

.

0

p

0

100

153

226

332

479

y

0.00

0.02

0

.

09

0.27

0.90

2.70

14

.

0

p

0

112

172

254

374

539

y

0

.

00

0.02

0

.

09

0

.

27

0.89

2.68

16

.

0

p

0

125

192

284

417

601

y

0

.

00

0

.

02

0

.

09

0

.

27

0

.

89

2.66

18.0

p

0

137

211

311

458

659

y

0.00

0

.

02

0.09

0.

2

6

0

.

88

2.64

100

.

0

p

0

323

496

733

1078

1552

(

and

below)

y

0.00

0

.

02

0.06

0.18

0.60

1.80

Notes:

1

. "

p"

i

s

soil

resistance, [lb/in

.

].

2.

"y''

is lateral

deflection,

[in.]

.

P

-

Y DATA

(CYCLIC LOADING)

API RP

2A

(2000) Method

24-in

.

-Diameter

Driven

Pipe Piles

Texas Offshore Port System, SPM

#2 PLET

B

lock

A

-

59, Galveston Area

I

Report No. 0201-6505

-

@

------

7

8

92

93

0.56

24.00

271

274

0

.

82

24.00

624

630

1

.

16

24

.

00

340

340

13.50

24.00

437

437

13

.

40

24.00

548

548

13.30

24

.

00

659

24

.

00

1552

24

.

00

PLATE 3-33

---

Date

j .

<l,'

July 5

,

2008

cs-

I

.

~

I

I

ts...

'i'

f-

.

~

.

~

,'...

~

.

,

Time

From

To

Descri~tion of Activities

****

0840

Arrive

in Block A-59, Ga

l

vesto

n

Area, SPM #2

PLET location onboard the

RIV Seaprobe.

0840

1020

Set 4-point

anchors

.

1020

1040

Rig

u

p to d

r

ill and

sample

.

****

1040

E

stimate water depth

of 121 ft us

i

ng echo

so

u

nder

and

124 ft using wire

li

ne techn

i

que.

1040

1050

Run

scan

ni

ng sonar.

1050

1135

Run dri

ll

p

i

pe

t

o mud

lin

e.

****

1

1

30

Conduct pre-shift

safety

meet

i

ng.

****

1135

Measure wa

t

er

depth

of 125 ft using bottom

senso

r

/pipe tally and 124.0 ft usi

n

g pressure

t

r

ansd

u

ce

r

.

1135

16

1

5

Drill

and samp

l

e

.

Boring te

r

minated at

131-ft

penetration.

1615

1650

Pu

ll

dri

ll

pipe

above

mudl

i

ne and repos

i

tion vessel.

****

1

650

Measure

supplemental water

depth

of 125 ft using

bottom

sensor/pipe

tally and 123

.

6 ft

u

sing

pressure

t

ransd

u

cer

.

1650

1720

P

ull drill pipe to

deck and secure equipme

n

t for

tr

avel.

1

720

1820

Pull a

n

c

h

o

r

s.

1820

****

Depa

rt l

ocation

.

SUMMARY OF FIELD OPERAT

I

ONS

Texas Offs

h

o

r

e Port System, SPM #2

P

LET

Block A

-

59, G

a

lvesto

n

Area

r

Report No.

0201-6505

-

@

---

PLATE

A-3

---

I

@

::0

(1)

"O

0

;cl.

!=)

z

0

"-l

~

a,

CJ!

0

(.n

Checked

B

y

:

}f-W

Approved By:

~

Da

te

:

Date:

Summary of Test Results

Identificat

i

on Tests

P

assi

n

g

Li

quid

P

la

stic

Moisture

Sub

merged

No.

Sa

mpl

e

D

e

pth

Liquidity

Limit

Li

mi

t

Content

Unit Weight

200

No

,

cnJ

In

dex

(%)

(%)

r1

,

1

(pol)

Sf

eve

1

1

.

00

58

2

1

.

50

1

.70

24

18

28

35

2

1.

50

28

3

1.80

41

48

4

2.00

5

5.00

29

58

40

6

8.00

30

57

61

7

10.00

8

10

.50

30

55

9

11

.00

NP

28

35

9

11.00

1

0

13.00

11

13.50

53

12

14.

00

1

.

44

34

16

41

12

14.00

45

73

13

16

.

00

14

16.50

14

16

.

50

15

17.00

.75

52

17

43

16

19

.00

17

19

.

50

17

19

.

50

40

N

O

TES:

TYPE OFTEST

U -

Unconfined

Com

pres

sio

n

UU- Unconsolidated-Undrained Triaxial

CU

-

Consolidated-Undrained

Tri

axial

Draw

n

By

:

tr.-/he,

I

Date:

1/.s/'73

Jo

b

No.

:

0201-6505-3

05-Sep-2008

(Ve

r

.

#5)

Boring:

Texas

Offsho

re

Port

System, SPM

#2 PLET

Block: A-59

Area: Galveston

S

trength

Estimate

Miniature Vane

Tests

Compress

ion

Tests

(ksf)

(ksf)

Moistun!

Confining

Undisturbed

Re

m

olded

&,o

Subm

e

rg

e

d

Failure

T

ype

Content

P

r

essure

Stn!!ngth

Stfflngt

h

Strain

Unit Weight

Strain

T

ype of

Penetrometer

Torvane

Undisturbed

Remolded

Residual

Test

('/,

)

(psi)

(

ks!)

(ksl)

(%)

{p<I)

('/,)

Failure

0.23

0.05

0.32

0

.

10

0

.

19

0.10

0

.32

0.42

0

.

37

0

.

60

0.15

uu

41

122

0.33

1

.

4

45

14

A

0.52

0.80

uu

51

120

0.70

0.5

43

2

AC

uu

52

120

0

.1

6

50

TYPE

O

F F

AI

LURE

Plus Signs

[+]

denote tests which exceeded the

A

- Bulge

capac

i

ty

of the

measur

i

ng

device.

B

-

Single

Shear

Plane

C

-

Multip

l

e

Shear

Plane

NP

=

Non

Plastic Material

D -

Ve

rtica

l

Fra

cture

---

I

@

;;o

(I)

-0

0

::+

z

!=>

0

N

~

Cl)

0,

0

0,

Che

c

ke

d

By

:

A

p

proved By:

4?.A.

Summary of Test Results

Date:

Vs-Jog

Date:

?'~..,;-/-

Jo

b N

o

.:

B

o

rin

g:

B

lo

c

k:

A

r

ea:

Identifi

c

ati

o

n Tests

S

tre

n

gth Estimate

Minia

t

u

re

Vane

Te

sts

Passing

(k

s

f)

(ksf)

Li

quid

P

l

asti

c

Moi

st

ure

S

u

b

m

erged

No

.

Sam

p

le

Dept

h

Liqui

d

ity

L

i

mit

Umit

Content

Un

it Weight

200

No.

(It)

I

ndex

(%)

(

'h)

(

%

)

(pcf}

Sie

v

e

Pene

t

rom

e

ter

Torvanc

Undisturbed Remolded

Residual

32

51

.

00

.

75

52

17

4

3

1.02

1.07

33

53

.

50

0.96

34

54

.

0

0

34

54

.

00

44

47

35

54

.3

0

.

82

53

17

46

1.17

36

59.00

1

.

12

37

59.50

37

59.50

0.

1

9

38

60.00

.43

48

17

30

1.06

1.52

39

63.30

.49

57

20

38

1.40

0

.

88

4

0

63

.

80

37

49

40

63.80

41

66.50

1

.25

1

.

30

41

66.50

42

67

.

30

.

55

60

18

4

2

1.25

1.30

1.62

43

78

.

50

52

44

78.80

36

1.30

1.56

44

78.80

34

45

87

.

50

1

.

75

1

.

80

46

88.00

46

88

.

00

47

88

.

50

.45

56

17

35

1.25

1.45

1

.

55

N

O

TE

S

:

TY

P

E OFTEST

TY

PE

OF FAILURE

U - U

n

confi

n

e

d

Comp

r

ession

A - B

u

lge

UU- U

n

c

o

n

so

li

date

d

-Undrai

n

ed Tr

i

axial

B

-

Single

Shear P

l

ane

CU- Consolida

te

d

-U

ndra

i

ned Triaxial

C - Multi

p

le

Shear

P

l

ane

D - Vertical

Fr

act

u

re

0201-6505-3

05-Sep-2008

(Ve

r

.

#5)

Texas Offshore Port System, SPM

#2

P

L

ET

A-59

Galveston

Compression T

e

sts

Moisture Confining

Undisturbed

Remolded

i;,,

Sub

m

e

r

ged

Fai

l

u~

T

ype

Conte

n

t

Pressure

St~

n

gth

Stn,ngth

Strain

Unit Weight

Strain

Type of

Test

(

'

!.

)

(psi)

(ksO

(ks!)

rM

(pcO

(

¥,)

Failure

uu

44

120

0.57

1.0

48

7

AB

uu

43

120

0.17

46

uu

33

121

0

.

54

2.4

58

1

7

A

uu

38

120

0

.

31

49

uu

39

120

1

.

18

0.8

50

3

AC

uu

121

0.35

49

uu

39

121

1.

22

1

.

1

46

6

B

uu

33

121

1

.

1

5

1.7

57

10

c

uu

121

0.44

57

Plus Signs

[

+

]

deno

t

e tes

t

s

which

exceeded the

capacity

of the measu

ri

ng dev

i

ce.

N

P

=

No

n

Plastic Mate

r

ial

---

I

@

~

"

0

;:::i.

z

?

0

N

0

...

a,

(.11

0

(.11

Checke

d

By:

~

App

r

ove

d

By:

,v7

...

Sum

m

ary of Test Results

D

a

t

e

: 9

j)

-

/

0

3'

Date

:

"1"%;0

Job No

.

:

Bor

ing:

Block:

Ar

ea:

Identification Tests

Str

ength

E

stimate

Miniature Vane

Tests

Sampl

e

Dep

t

h

Ll

qu

l

d

ity

N

o.

(

It

)

In

dex

48

9

7.50

49

9

8.00

50

98

.50

51

1

08

.0

0

52

10

8.50

52

1

0

8

.

5

0

53

1

09.00

54

118

.00

55 118

.50

56 1

1

9

.

00

.

45

56

1

1

9

.0

0

57 130

.0

0

58

130.5

0

58

130

.

50

59

1

31

.

0

0

NOTE

S

:

Pas

sin

g

Liqu

i

d

Plastic

M

ois

tur

e

Subm

e

rged

No

.

Lim

i

t

Limit

Cont

e

nt

Unit

We

i

ght

200

(%)

(%)

(%

)

(pcl

)

Si

e

ve

39

51

38

45

56

43

15

28

29

52

TYPE O

FTE

ST

U

-

Unconfined Compress

i

on

UU- Unconsolidated

-

U

ndr

ained

Triaxial

CU- Consol

i

dated-Undrained

Triaxial

(ksf)

Penetrom

e

ter

Torvane

1.25

1.10

2.25

2.00

2

.

00

1

.

80

1.

50

1

.

35

2

.

25

1.95

2

.

25

1.80

(ksf)

Undi

stu

rbed

R

e

mo

ldad

1

.

18

1

.

99

1.32

2

.

10

TYPE O

F

F

AIL

URE

A- Bu

l

ge

Res

f

duat

B

- S

i

ng

l

e Shea

r

P

lane

C -

Mu

lti

p

l

e S

h

ear Plane

D

- Vert

ic

a

l

Frac

t

ure

Dra

w

n B

y:

11

0,.,.

of

Da

t

e:

t:/

I

f'"

!of

0

2

0

1

-

6505-3

05-Sep

-

2008

0/

er.

#5)

Te

x

as

Offshore Port Sys

t

em

,

SPM #2 P

L

ET

A

-59

Ga

lv

es

t

o

n

M

oi

sture

C

onfini

n

g

Type

Con

t

e

n

t

P

r

e.ssu

~

Tes

t

(%

)

(

p

s

i

)

uu

44

121

uu

12

0

uu

73

12

1

uu

12

1

C

ompression

Tests

U

ndist

u

rb

e

d

Re

mo

l

d

e

d

6

,o

S

u

bmerged

Fa

ll

ure

St

ren

gth

Sm

n

g1

h

St

ra

i

n

Un

i

t W

ei

ght

Stra

i

n

Typ

e

of

(

ks

!)

(

ksl

)

(

'

/,

)

(

pcl)

r.,,

,

F

a

il

ure

1

.

88

0

.

6

45

3

c

0

.5

5

47

1

.

60

1

.

1

4

3

4

c

0.

4

5

47

Plu

s

S

i

gns

[+]

denote tes

t

s which exceeded

th

e

capaci

ty

o

f

the meas

u

ring dev

i

ce.

NP

=

Non P

l

as

tic

Ma

t

erial

\

I

l

I

I

---

I

@

1

~

;o

0

::i.

z

?

0

I\)

~

(J)

0,

0

0,

I-

I

Cl

iii

~

>-

ca

(!)

~

Cl)

Cl)

<(

c..

I-

z

w

0

c..

0.::

w

100

90

80

70

60

5

0

40

30

20

10

0

1

00

I

'

-aie

c

k

ed by:

~

--

Date:

-

,r

/

f

/t=o

-

Approved by:

~-

Date

:

'Y;/,;

t

U.S. STANDARD

SI

EVE SIZES

IN

I

NCHES

3

2

1 3/4

3

/

8

I

I

'

I

I

I

I

I

I

I

~

I

10

GRAVEL

Coarse

I

Fine

S

AM

PLE NO

.

DEPTH

.

FT

U.S

.

STANDARD SIEVE NUMBERS

4

10

20

40

60

100

200

'1

l

T

~

'

I

\

I

I

I

\

'

I

I

I

I

I

I

I

'

I

l.

I

I

I

I

I

I

I

1

1

I

11

I

II

I

1

0.

1 .

075

GRAIN SIZE

IN

MILLIMETERS

SAND

Coarse

j

Medium

I

Fine

SYMBOL

CLASSIFICATION

SILTY F

I

NE SAND (SM) with

many

shell

fragments

HYDROMETER

0.01

SILT or CLAY

5

6

5.00

8

.

00

0

c

SANDY SILT (ML

)

with clay pockets, partings, and seams, mica and shell

fr

a

gments

GRA

I

N-SIZE DISTRIBUTION

CURVES

Texas

Offshore Port

System,

SPM

#2

PLET

Block A-59, Galveston Area

0

10

20

30

I-

I

(!)

40

>-

~

ca

0

UJ

50

z

w

~

0:::

60

I-

z

w

0

0.::

70

UJ

c..

80

90

100

0.002

0.001

---

-

--~--

---

--

-

u..

l;

~

!

~

~

1.00

Cl

~

-!<

t

Cl)

I~

Cl)

a.>

I-

;.:.

......

,

m

en

~

I-

0.75

~

0

r

......

m

'>

a.>

0

"O

a.>