Block A-59
Galveston Area

140 ._______.......______......,________________......______..
ENTERPRISE FIELD SERVICES, LLC
DIGITAL COPY

Appendix B contains discussions of ana

ytical

procedures used

our

engineering analyses. Appendix C

contains a positioning

report

Fugro

Chance,

nc.,

Lafayette, Louisiana

•

For the purposes

of discussion and presentation, "driven pipe

pile"

used

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

through 6, 2008,

from the

Seaprobe.

The

soil

cond

itio

ns were

determined

by performing

four exploratory borings

two at each

SPM location with

one

boring

selected

anchor

eg location, and one

boring

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

the boring locations ranged from 123 to 125

ft. A chronological summary

field

operations

presented

Appendix

2.2.1

Exploratory Borings

FMMG

personnel

drilled

the

borings with a

OMX

drill

rig

positioned over

the

centerwell of

the

Seaprobe.

The

vesse

was anchored at

the

boring

location by

a 4-point mooring system.

Soil

conditions at

the

site were

exp

lored

drilling

a group

of four soil borings

to 131-ft

penetration below the

seafloor. The

final

coordinates for the boring

locations

are presented

Table 2-1. A plan of borings within

Block A-59,

the

Galveston Area is presented on

Plate

2-1.

Fugro

Chance,

Inc.,

Lafayette, Louisiana

conducted surveying utilizing STARFIX and

DGPS,

and

performed

a 360-degree scanning sonar survey.

The

positioning report, prepared by

Fugro

Chance,

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

Table 2-1:

Final

Boring Coordinates

(Texas South Central Zone Coordinates)

Fugro

Chance

Proposed

Boring

Final Boring

Boring

Coordinates

Designation

Core 3

3,258,627

X = 3,258,640

Y =

236,494.60 ft

Y = 236,466

Core

X = 3,257,224.19 ft

X = 3,257,200

Y = 236,057.66

236,056 ft

Core4

3,265,632.42

3,265,647

240,337.08 ft

Y = 240,318

Core

X = 3,266,735.50

3,266,

758 ft

241,308.73

241,331

Boring

Termination

Depth (ft)

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

68-ft

penetration,

and at 10-ft intervals

thereafter to the final boring

depth at the

SPM

ANCHOR LEG #2

and SPM #2

PLET locations

Sampling

intervals

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

the SPM #2 ANCHOR

LEG

ocation

was

completed as

follows

3-ft intervals

20-ft

penetration,

5-ft

. 02

_ _

2-2

------

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

the final boring depth.

The drilling and

sampling techniques used to complete this boring are

exp

lain

detail in Appendix

Two

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

vestigation

only, and are not corrected for tidal or other

riati

ons

. If

utilized for other purposes, the

water depth

measurement

should

be adjusted

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

123

0720 hours on

July

2008

July

5, 2008

SPM

#1 ANCHOR

123

1440 hours

122

2200

hours on

LEG #2

July

4, 2008

July 4, 2008

SPM

#2 PLET

125

1135 hours

125

1650 hours on

July

2008

July

5, 2008

SPM #2 ANCHOR

124

0220 hours

124

0655 hours on

LEG

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

the

foundation soils

During the field operation,

all samples were extruded from the sampler and classified

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

additional density tests, unconsolidated-undrained triaxial

comp

ression

tests, and miniature

vane

tests, were performed.

A description of relevant

lab

ora

tory

procedures

provided in Appendix A.

The strength

and

classification test results are presented graphically

on the Logs of Boring and Test Results in Section

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

are presented

in Appendix

2.3

GENERAL SOIL CONDITIONS

2.3.1

Soil Stratigraphy

The soil

strat

graphy

at each of the boring locations

disclosed

by the field and

laborat

ory

investigations

presented

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

samples

recovered from

the

boring and observations

ade

during drilling operations. Detailed soil descriptions, for

each location, that include

extural

variations and inclusions are noted

on the respective

boring

log

Report No. 0201-6505

2-3

....

Cl Cl

,; a.

'-' <t

3,2

56,40

3,261,400ft

3,266,400ft

247,000 ft

Block

-5

Galveston

Area

242,000 ft

.,,.,.

........

Offshore Terminal

•

237,000

SPM

PLET \

SPM

Anch

Leg

1,470 ft/

.....

232,000 ft

Projection:

Texas

South Central

Zone

Coordinates

PLAN OF

BORINGS

SPM~Anchor Leg #6

.,,.,.

........

SPM

PLET \

1,470ft~

.....

Texas Offshore Port System

Block

A-59,

Galveston Area

i,i

1ii

\"::'

TERMS AND

SYMBOLS

USED ON

BORING

LOG

SOIL TYPES

SAMPLER TYPES

[!Sand

mSilt

~Clay

~Gravel

~Debr

~Liae,

~Th;,.

~'" su,

...

Walled

Test

Tube

!ill

Silty

msandy

Sandy

~Peat or

VI,

Coral

Sand

Silt

High

Organic

~Clayey

mClayey

mSilty

~p;,100

Rock

iShell

~Rock

~No

Sand

Silt

Clay

Core

Recovery

SOIL GRAIN SIZE

U.S

STANDARD SIEVE

3/4"

200

OULDERS

COBBLES

GRAVEL

SAND

SILT

CLAY

COARSE

FINE

COARSE

MEDIUM

FINE

152

76.2

4.76

2.00

0.420

0.074

0.002

SOIL GRAIN SIZE IN

MILLIMETERS

DENSITY OF GRANULAR SOILS(

2,3

STRENGTH OF COHESIVE SOILS(

Undrained

Shear Strength,

Consistency

Kips Per Sg

Descriptive

*Relative

erm

Density,%

Very

Soft....

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

less than

0.25

Very

oose..

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

less than

Soft...

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

0.25

0.50

Loose...

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

to 35

Firm.

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

0.50

1.00

Medium Dense.

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

Stiff........

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

1.00

2.00

Dense..

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

Very Stiff...

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

2.00

Very Dense

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

greater than

*Estimated from sampler driving record

Hard.

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

greater than

4.00

SOIL STRUCTURE(

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

different texture

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.

ayer.

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

Inclusion

eater than

ches thick extending through the sample.

Laminated.........

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

Soi

sample composed

of alternating partings

seams

different soil types

nterlayered......

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

Soil sample composed of alternating layers

different

soil

types

Intermixed....

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

Soil

sample

composed

pockets of different so

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

carbonate.

nformation

on each boring

log

is a compi

ation of subsurface conditions and soil or rock

classifications obtained from the field as

well

as from

laboratory

testing of samp

es.

Strata

have been

preted

commonly accepted

procedures.

The stratum lines on the log may

be t

ansitiona

and

approximate in

nature.

Water level measurements

refer

to those observed

the times and

aces indicated in

the

text, and may

vary

with time, geologic

condition

or construction activ

ty.

Report No.

0201-6505

PLATE

2-2

•

C.INC. Si:

S::!103

>,.,._

Report

No. 0201-6505

----

-eLM

'"'

SPM #2

Anchor Leg #6

(J)

.....

...

,,.

...

SPM#2

PLET

...

-i---

'"'

.,.,

..,

Offshore

Terminal

'"'

........

SPM#1 Anchor Leg #2

-t

""'

.........

...

'"'

SPM #1 PLET

'"'

...

""'

..,

'"'

..,

........

...

'"'

'--

11,

;

•

MAP OF

SOIL BORINGS

AND SUBBOTTOM

PROFILE LINES

Texas Offshore Port System

Block

59, Galveston Area

""'

....

"'+

'"'

.......

..,

'"'

..,

""'

.........

'"'

..ll

""~

•

PLATE

2-3

SITE SPECIFIC SOIL AND PILE DESIGN INFORMATION

3.1 SPM #1 PLET LOCATION

3.1.1

Introduction

The field investigation at the location designated as

SPM

#1 PLET

was performed

on July 4 and

5, 2008. Soil

sampling

was

performed to 131-ft

penetration at

Texas

South

Central Zone Coordinates

3,258,640

and Y

236,466

ft.

The measured

water

depth

was

123 ft.

1.2

Soil Stratigraphy

The

soil stratigraphy

disclosed by

the

field

and

laboratory investigations is presented

the boring

log, Plate

3-1.

The

soil stratigraphy

is based

the

classification

soil samples

recovered from

the

boring

and observations made

during drilling operations.

A generalized summary of

the major

soil

strata

tabulated below.

Penetration,

Stratum

From

Description

Very soft sandy

lean

clay

Loose to medium dense

silty

fine

sand

Ill

Soft to firm

sandy

silty

clay

interlayered

with

medium dense

sandy silt

to silty

fine sand

131

Stiff

very stiff clay

Detailed

soil descriptions

that include textural

variations and inclusions are

noted

the

boring log.

A key

the

terms and symbols

used

on the boring log is presented on Plate 2-2. The Roman numeral

representing

each stratum

also shown

on the

boring

log and on relevant plates

The variation in

soil

stratigraphy across

this

site

is indicated in

a comparison (integration)

ofJhe geophysical and

geotechnical

soi

information presented

Plate

3-2.

3.1.2.1 Interpretation of Soil Properties

The

shear strength

and

submerged

unit

weight profiles

shown on Plates

3-3 and 3-4,

respectively,

best

represent

the assemb

test results plotted

the

boring

log.

These profiles were used in the

engineering

analyses.

3.1.3

Pile Design Information

The

pile design information developed for

this study

includes ultimate

axial capacities,

axial load-

pile movement

data, and

lateral

soil

resistance-pile deflection (p-y)

characteristics.

The analytical methods

used to develop

this

information are

presented briefly

Section 2.5 and

in more detail in

Appendix

3.1.3.1 Axial Pile Design

Ultimate Axial Capacity.

The unit

skin

friction

and

unit

end

bearing values plotted on Plates

3-5

and 3-6,

respectively

were calculated

using

the AP

methods described in

Appendix

These

values

were used

calculate the

ultimate

axial compressive and

tensile capacities for

24-in.-diameter

pipe piles,

-@-

3-1

driven

final penetration at

boring

ocation.

Axial

capacity curves for driven pipe piles (conductors,

caissons, anchor

and

foundation

es) are presented on Plate 3-7.

RP 2A

recommends that

pile penetrations be selected using appropriate

factors

of safety or

e resistance factors.

These factors

are discussed

Section 2.5.1

of this

report.

Axial

Load

Transfer Data.

Axial

load-pile

movement analyses are usually performed

using

computer solution based

on methods developed by Reese (1964) or Matlock, et

al.

(1976)

Plates

3-8 and

3-9 presents the results as side

load-side

movement (t-z) and

tip

oad-tip movement (Q-z)

data

for

24-in

diameter driven pipe piles, respectively.

The

presented Q-z data should be used for foundation piles and

neglected for caissons and conductor design

developing the axial

load transfer

data in the cohesive

soi

s, a post-peak adhesion rat

o of 0.90 was

utiliz

ed.

.1.

3.2 Lateral Pile Design Data

soil resistance-pile

deflect

(p-y) characterist

cs of the soils at

boring location

were

developed for

individual

24-in

-diameter driven pipe piles. These data may be used

in lateral

oad analyses

of driven piles, conductors and caissons.

The

p-y data for cyclic

were

developed to

100-ft

penetration using procedures that

ave

been outlined

in AP

RP 2A and briefly explained in Appendix B.

The stratigraphy and parameters used to develop the p-y data are presented on Plate 3

10.

The p

-y

data

for 24-in

-diameter driven pipe piles are presented

on P

11.

P-y values presented at 100-ft penetration

may be

used

for lateral load analyses at greater depths.

3.1

Seafloor

Bearing Capacity

Ultimate bearing capacity equations for

near-surface

soi

s were taken from a design method

deve

oped by Skempton (1951) and

Brown

and Meyerhof (1969) based on undisturbed

shea

strength.

The

ng equations

can be

used to

determine

the

timate bearing capacity for

horizontal

tubular members

and

mud

mats resting

the

seafloor:

770

for tubular members,

770

for mud mats for B

:::;

3, and

(770 + 9B)(1 + 0.2 B/L)

for mud mats for 3

:::;

50 ft

where:

ultimate

bearing capacity, psf;

th of mud mat, ft; and

length of

mud

mat, ft.

For

horizontal tubular members penetrating

less

than one

radius,

the projected area at

the mudline

should be used

calculate the ultimate bearing capacity of the

members.

For members penetrating one

radius

more, the diameter

should be used. For

triangular-shaped

mud

mats,

B should be taken as 75

percent of the

east a

titude and

should

be taken as the

longest

side.

API RP

recommends that appropriate

factors

of safety be applied

the capacity values.

These

factors

are discussed

in Section 2.6

Report No

0201-6

____

3-2

.;hecke~ ~,.

Da...

By:

Jiit(!.

Approved By:

Date:

3,258,640'

IDENTIFICATION

TESTS,[

)

Y= 236,466'

BLOW

UND

NED

SHEAR

STRENGTH

:;o

COUNT

•

(ksf)

Texas South

Central Zone

Coordinates

SUBMERGED

UNIT WEIGHT,

(kcl]

AFLOOR AT

EL. -

123'

0.03

.05

0.06

0.5

1.0

1.5

2.0

•

SOFT

GRAY

SANDY LEAN CLAY 12.01

WOH

...

i....

LOOSE TO MEDIUM DENSE GRAY

LTY

FINE

SAND

• •

••

-II-

•

••

118.0'l

•

...

SOFT

TO FIRM

GRAY SANDY SIL

CLAY

s--.

INTERLAYERED

WITH MEDIUM DENSE

SANDY

SILT

SILTY FINE SAND

••

•

Note

See

PLATE

3-1b for

detailed

soil

stratigraphy

40-ft

penetratio

f--+

•

n b

+..........

-with

few

clay pockets and shell fragments at 44'

•

Ill

-with olive

gray

bands at 49'

-with

few shell fragments at 54'

•

-greenish

gray,

58'

66'

-mottled

with

brown

ish

yellow, with

sand pockets,

...

partin

gs,

and

seams, and

claystones

59'

••

•

J+

....

-with a few clay

pocket

and pockets

of organic

PUSH

••

matter at 74'

177.0'l

•

~jlo

•

(

4.1

75.5)&~

STIFF

VERY STIFF

GRAY

CLAY

>---

(I)

, 85.0)

©--:;!!

-lean, mottled with

olive

gray, with

many calcareous

PUSH

+--

_!,.__

ft-

• .c,. +

.....

nodu

les

85'

86.0) ®-"?

(I)

..:

i:;::

(I)

CJ)

with

a few

silt

pockets, 94'

to 106'

PUSH

419

[I][

.c,.

.....

•

L..

i:;::

(I)

Cf)

100

(I)

:.::;

L..

110

(I)

a..

PUS

;------

..llil

...

-t

•

PUSH

11£1

® ...

(I)

:;::;

110

L..

(I)

a..

120

brown,

mottled with

gray

with

few

silt pockets

and partings,

124'

to 131'

PUSH

-lean

with

gas

blisters and a few

calca

reou

--'-

.c,.

® ..~

nodules at

125'

-with a few silt seams

at 13

_ __

___(J:u,Q'.J._

- -

I--

..--

CL.I

'--F-

---

,____

---

130

140

>---

140

150

>---

150

160

170

180

190

200

SAMPLING TECHNIQUES

CLASS

CATION

TESTS

STRENGTH TESTS

200

Number of

blows

of a

75-

weight (hammer) dropped approximately 5

ft to produce

SOLUBIUlY

IN HCL

[%]

® POCKE

PENETROME

)

maximum

penetration of a 2.25~n.-OD, 2.125-in

-lD

thin-walled

tube

•

PERCEN

SSING

200

SIE

[%]

ANE

(TV)

sampler

PUSH"

denotes a

.00-i

n.-OD, 2

3-in

thin-walled

tube

san:ip

erwas

•

WATER CONTENT

0N),

)

<I>

REMO

VANE

(RV)

advanced 24

in.

with the weight

the

rill

string.

"WOH"

eno

tes

a 2

50-in

-OD.

SUBMERGED UNIT

WEIGHT

(

+ MINIATURE VANE

(

MV)

(~ RES

(MVres)

VALUE)

2.125

-in.

-lD liner

sampler was advanced 24

in.

with

the

weight of the hammer

A UNCONSOLIDATED UNDRA

NED

IAXIAL (UU)

PLASTIC

LIMI

(PL)

QUID LIMIT

(

LL)

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

(Open

symbols

cate

emolde

(r)

LOG OF

BOR

G AND

TEST

RESULTS

Texas Offshore

Port

System, SPM #1 PLET

Block A-59, Galveston Area

1\,1,"\

___

r,il./

hec

Dat,

'1#1

-n

/l'lr

Approved

By:

Date:

X = 3,258,640'

IDENTIFICATION

TESTS,[%]

Y = 236,466

UNDRAINED SHEAR STRENG

COUNT

[ks!]

Texas South Central

Coordinates

SUBMERGED UNIT WEIGHT, [kc!]

"'C

;:i.

!='

SEAFLOOR AT

123'

0.03

0.05

0.06

0.2

0.4

0.6

0.8

SOFT GRAY SANDY

LEAN

CLAY

WOH

-wtih manv shell

fraoments

0'\

......

...........

LOOSE

TO MEDIUM D

GRAY SIL

f\.)

.....

O')

SAND

th a few shell f

agments

o 11'

-w

th a few mica

with a few silt seams at

••

-II-

-with

a few pockets of organic matter at 1O'

•

-with clay

pockets

and shell

fragments below 12

••

:;:;'

(I)

....

c;:::

(ti

Cl)

(I)

:;:::;

.....

(I)

a..

•

118

...

SOFT

TO FIRM GRAY

SANDY SILTY CLAY

...

•

INTERLAYER

•

...

WITH MEDIUM

DENSE

SANDY SILT

SIL

TY FINE

SAND

.;,

-w

th clay

pockets

and a few shell

fragments to

25'

-w

th clay

partings

24'

USH

• •

,..

....:-

c;:::

(ti

Cl)

:;:::;

....

(ti

a..

Ill

•

(

H ,39

5)..A.7

SAMPLING

TECHNIQUES

CLASSIF

CATION

TESTS

STRENGTH

TES

mber of blows of a 175

b weight (ha

mer) dropped appro

mate

to produce a

..,..

SOLUBI

IN HCL

[

POCKET PENETROMETER (PP)

maximum

24 in

penetra

on o

a 2

25-in.-OD

2.125

lD th

n-wa

ed tub

•

CENT

PAS

SIN

-200

EVE

[

+ TOR

ANE

(TV)

sampler

"PUSH

denotes a 3

0-in.

-O

2.83

-lD

thin-walled tube

samp

erwas

•

CONTENT

CW),

[

]

<I> REMOTE

NE (RV}

advanced 24

n. w

th the we

ght of the drill string

'WOH" denotes

a 2.5

in.-OD

SUBMERGE

UNIT WE

GHT (SUW)

+ MIN

ATU

E VA

E (MV) (~

RES

L (MVres) VALUE

)

2.125-

er samplerwas

advance

with the

weight of

e hamme

..A. UNCONSO

ED UNDRAINED

TRIAXIAL

(

)

PLASTIC LIMIT

(

PL)

LIQU

MIT

(

LL)

+------

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

(

Open

ls Indicate

remo

(

tests)

G OF BORING

TEST R

exas Offshore

System, SPM #1 PL

lock A

59, Galvest

n A

{

Offset:

0.08

01-6505

750

125 METERS

8000

410

._•,,

..,,

.....

;

::_ ..

1,I

--.

.:.

-..,

._:-

--:,

1-l,

•

;

.-.

..,. ..

../

'l"'-:i-d~;f'i;:/;;<,; ;.,.

.~;:

'"-'

•".

....

j.'

.-.1.

..:;;:,

••

' M,\

•:

;

•;

;

;,. I

)

_;.

,. -~

.,.

\':

•

;

••

.l.

!'j1

.I.

..,

;

~-, .;

. i'

1-~~-"

~~~

.....-~

......

~--"-~~

-111--~~

.....

....~~~.i...~~-'-----I

-.--

CLASS

IFJ

TtON

TEST

LITY

HCl

!%]

•

F-ERCENT ?ASS

-::OO

SJEVE,

rt.

'rl::RCO

NTE

}.~

)

~USME~GED

EIGHT

(SIJ

)

PL.AST

----

:C U

)

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

ltOUID

ll',1

7 (Llt

RENGT

TESTS

® POCKE:T FE

~~i'ROMET::R (PP)

iCRVANE (

}

R::t.10TE

VANE

{

+ l.t

Nl~

T\JR;.

VANE

(

~ RES

DUA

(

J.1Vr

tsl

VALUE}

.t.

CONSO

.c..T::

D UNC~

l'iE:

i'R!A.

"(I

)

Pl.,O,

S-

furde

lllwd9ol

t~t

4o.ft1>•M\>•Uan.

•

n,wn,matd

...i

w111>

•

1,""1"1

•

P<>e.l<

•MP•

nlnil

,12-''

'!,9;;:..:"':

~f~

,..

•

ewi.al~

-wr~~,r,

----lJ

...

DRAINED 9H&AII.

,,,

•

.'.

--l--+-

--l--

+----ll----+--l---+---l--~

,ij'.

••

I.:

+-- .!;.....

•

(3 H.O)

;,.

H.0)

1t-~--t

~+~

--t~

~--1

1--

~+~--11-~+~--t

~~~1sO

:r• ;'~

•

1>-~-+

-+-~-+~~-+-~-tt--~-+-~--1...,__~-+-~-+~

190

. ;

GEOPHYSICAL AND GEOTECHNICAL INTEGRATION

Texas Offshore Port System

SPM

#1 PLEM

Block

A-59,

Galveston Area

18500

..~

.-;

.060

070

.,.:

,•

i.'.

(

!1' i"

'i~ '

.08

.090

PLATE 3-2

(

.....

Shea

Strength Profile, [ksf]

0.5

$ =

°,

Nq = 12

1.4

ksf,

max

60 ksf

2.5

Ill

i;::::

...._-

---

--+-

-1----

--+-

----+-

--f-

----1

Cl)

5 80

...._

----+--

--+---

-+-

~-f---

---1

:;:::;

Cl..

e: Roman nu

rals ref

the

ratigraphy

esc

ribed in the text

and

n th

ring lo

140

...._______...._________________________......______......

DESIGN

STRENGTH

PARAMETERS

Texas Offshore Port System, SPM #1 PLET

Block A

59, Galveston Area

Report

0201-6505

-@--

PLATE 3-3

1---

:;:::;'

....-

1ij

(/)

Cll

:..::.

«>

.....

a..

Submerged Un

t Weight, [kcf]

0.02

0.04

0.06

'-----

---

_ _l__

100

120

140

----

L-------

----

---

---.

Ill

Note

an numerals ref

r to th

stratigraphy

des

ribed

n the text and

on t

e b

ring

c...----

___

----

----'--

---

1-------

------

___

------

---

DESIGN SUBMERGED UNIT WEIGHT

Texas Offshore Port System, SPM #1 PL

Block A

59, Galveston Area

(

PLA

E 3-4

Unit Skin

Friction,

[ksf]

0.5

1.0

1.5

2.0

(1)

Ill

S.....:-

(1)

Cl)

3::

Cl)

O'.l

--1.

----+----.......,

2.5

§ 80

l----

--+----

-----+----

--1--

-1-----------11

:;:;

......

a..

Notes:

1. Roman numerals refer

to the

stratigraphy

describ

and

the

boring

. Tens

n and

compression curves coincide.

140

....

----------------------....i..----------------

UNIT SKIN

FRICTION

API

RP 2A (2000) Method

Texas Offshore Port System, SPM

#1 PLET

Block A-59, Galveston Area

-@-

______

PLATE

3-5

Unit End Bearing, [ksf]

Ill

Notes

100

1. Roman numera

s r

fer t

the stratigraphy as

1----------\

-+------+-

---

-I

described in the text and on the b

ring log

Dashed l

ne represents equiva

ent unit end

bearing availab

e fr

m f

ric

tio

al resistance

of soil plug insid

e t

he ind

ica

ted p

ize

d bearing compo

ent is negle

ted for

ssons and conductors

140

._______.......______......,________________......______

___

UNIT END BEARING

API RP 2A (2000) Method

Texas Offshore Port System,

SPM #1 PLET

Block A-59, Galveston Area

PLATE 3-6

Ultimate Axial Capacity, [kips]

200

400

600

800

1000

!;:;'

L..-

Nole:

Roman

numerals refer to the

stratigraphy as

described

in the

text and

the boring log.

Compression for

piles

Tension

for

piles

or tension and compression

for caissons and conductors

Ill

i:;::

11--

-----.-+---+~~~~~--t------~

~-t-~~~~~--~~~~--t1

§ so----

-t,-,.,__

,----

+------+------+-----~

:;::::.

a..

140.._

____________________________________________

ULTIMATE AXIAL

CAPACITY

API RP 2A (2000) Method

24-in.-Diameter Driven Pipe Piles

Texas

Offshore Port System, SPM

#1 PLET

Block A

59, Galveston Area

Report No. 0201-6505

---

PLATE

3-7

(

--..::::_

{

;.:.

.,.

.r:::

()

;.:.

PENETRATION

BELOW

CURVE

POINTS

MUDLINE

(feet)

0.0

0.00

0.19

0.02

0.03

0.04

0.05

0.06

0.00

0.19

2.0

0.03

0.06

0.04

0.07

0.14

0.19

0.24

2.0

0.00

0.03

0.10

24.00

18.0

0.30

24.00

18.0

0.00

0.09

0.27

0.00

0.04

.07

0.14

25.0

0.00

0.33

0.04

O.Q7

0.24

29.0

0.00

0.12

0.20

0.30

0.36

0.40

0.00

0.07

0.19

0.24

77.0

0.00

0.19

0.32

0.49

0.58

0.65

0.00

0.07

0.19

77.0

0.45

0.75

1.12

1.35

1.49

0.00

0.07

0.14

0.19

0.24

95.0

0.00

0.43

0.72

1.08

1.29

1.43

0.04

O.Q7

0.14

0.19

115.0

0.83

.24

1.49

1.65

0.04

0.07

0.14

0.19

0.24

131

0.55

0.92

1.65

1.83

0.00

0.04

0.07

0.14

0.19

Notes: 1

mobilized soil

pile adhesion, [ksf].

axial pile displacement

[in.]

Data

for tension and compression

coincide.

Report

0201-6505

AXIAL

LOAD

TRANSFER

DATA

(T-Z

DATA)

API RP

2A (2000)

Method

24-in.-Diameter

Driven

Pipe Piles

Texas

Offshore Port System

SPM

PLET

Block A-59,

Galveston

Area

0.00

0.48

24.00

0.05

0.48

0.06

0.48

24.00

0.48

0.33

0.48

24.00

0.48

24.00

0.58

0.48

1.35

0.48

.00

0.48

24.00

1.49

1.4

0.48

1.65

0.48

PLATE

-8

[

(

;,;

(

::,:.

ENETRAT

LINE

(

feet

)

77.0

95.0

131.0

CURVE PO

0.05

.75

I )

otes: 1

s mobilized e

bear

ng capac

ty, [kips]

[

z" is axia

tip d

lacement

[

(.)

-,:

Rep

rt No. 0

01-6505

---

AL LOAD TRANSFER DATA

(

-Z

TA)

RP 2A

(

) Meth

Diamete

Dri

e Pi

Texa

s O

ffs

re Port S

stem

#1 PLET

-59, Ga

ton

2.40

24.00

2.40

24.00

E 3-9

-l

Penetration

~GRD

Or-------------

Loose

to medium dense

lty

fine sand

Soft to firm sandy silty clay

interlayered with medium dense

sandy silt to

silty

fine sand

iff to

very stiff clay

Notes

Scour= 5'

= 20 pci

18'

2.5 %

77'

---------

at 77'

decreasing linearly to

E50

100'

100' -

is axial strain at half of peak deviator

stress for

cohesive soils

2. Soil

stre

ngth

parameters are shown on

3-3.

Submerged unit weight profile is shown on

late 3-4.

is the

modulus

horizontal

subgrade

reaction for granular soils.

STRATIGRAPHY AND PARAMETERS FOR P-Y DATA

Texas Offshore Port System, SPM

#1 PLET

Block A-59

Galveston Area

n;).f{

epo

rt No

. 020

6505

rx.JJ

PLATE

;.:.

Ill

-"'

.r:

.,::

PENETRATION

CURVE POINTS

MUDLI

(feet)

0.0

24.00

5.0

0.00

7.0

113

129

0.05

0.08

.18

0.28

9.0

124

206

272

342

391

0.00

0.13

0.18

0.28

0.43

248

414

546

687

786

0.00

.25

0.37

0.57

335

558

737

927

1060

0.00

0.28

0.43

0.66

434

724

955

1201

1375

0.00

0.22

0.32

0.48

0.74

18.0

607

1012

1335

1922

0.00

0.26

0.37

0.56

18.0

121

179

263

378

0.00

0.04

0.15

0.45

4.50

77.0

146

331

487

702

0.00

0.15

.45

1.50

4.50

77.0

450

690

1020

2160

0.00

0.03

0.12

1.20

3.60

95.0

338

518

765

1620

0.00

0.02

0.07

.22

0.73

100.0

349

534

790

1673

(and

elow)

0.00

0.02

0.60

.80

Notes

1. "p" is soil res

stance, {lb/in

]

2. "y'

lateral

defl

ection,

[in

.].

Report

0201

650

P-Y

DATA

(CYCLIC LOADING)

API RP

(2000)

Method

-in.-Diame

r Driven Pipe

Piles

Texas

Off

hore

Port System, SPM #1 PLET

Block A-59, Galveston Area

134

136

24.00

408

412

0.62

24.00

819

828

24.00

1105

0.95

24.00

1433

1447

24.00

2003

2023

24.00

378

24.00

702

2160

1620

24.00

1673

4.00

PLATE

Date

:,/')

{

July 4,

2008

(

Jul

5, 2008

io'"

:,..,

•

Report No. 0201-6505

GRD

Time

From

Descri~tion of Activities

****

2350

Arrive

in Bloc

A-59,

Gal

ves

ton

Area, SPM

PLET locatio

onboard

the

vessel

RIV

Sea

probe

2350

2400

Set 4-pt

ancho

0000

0115

Set 4-pt

anchors.

0115

0130

Rig

to drill and

sam

ple

****

0130

Estimate water

depth

117

with

vessel's

echo

sounder

and 122 ft usin

wireline

techn

0130

0140

Run

scanning sonar.

0140

0240

Run

drill pipe to

mudline.

****

0240

Mea

ure water

depth

f 123

using

ottom

ipe tally

and 121.0 ft

the

pres

sur

transducer.

0240

0655

Drill

and

amp

le.

Bor

ing termi

ated

131-ft

penetration.

0655

0720

Pull drill pipe

abo

mudline a

epositi

vessel.

0720

Measure supplemental water

123

wit

the

bottom

sor/pipe tally

and 122.0

ft wi

pressure

trans

cer.

0720

0740

Pull drill pipe

deck

and secure equipment for

travel.

0740

0825

Pull

anchors.

0825

****

epa

ocation.

SUMMARY OF FIELD OPERATIONS

Texas Offshore Port System, SPM #1 PLET

Block A

59, Galveston Area

PLA

A-

Checked

/kJ

Approved

Date:

Summary

Test Results

;

entification

Tests

ass

ing

Liquid

asti

Moisture

Sub

erged

No.

Sample

Liquidity

Limit

Content

nit

Weight

200

No.

(ft)

Index

(%)

(

)

(pc!)

Sieve

.00

1.80

.00

1.00

14.00

19.00

24.70

25.00

29.50

30.00

35.00

TYPE OFTEST

U - Unconfined Compression

UU- Unconsolidated-Undra

ned Triaxial

Consolidated-Undrained

Tria

xial

Drawn By

1(:.

fl'

Date:

er /,Ice-

Job No.:

0201-6505-2

05-Sep-2008

(Ve

#5)

Boring

Texas

Offshore Port

System,

SPM

PLET

Bloc

k: A

-5

Area

: Ga

vesto

ren

Estimate

Miniature

Vane

Tests

Compression Tests

(ksf)

Moisture

fini

Undist

urbed

Remo

ded

Submerged

Failure

ype

Content

Pressure

Strength

Strain

Unit Weight

Sb.tin

Typ

Penetro

eter

Torvane

Und

sturbed

Remolded

Residual

('/,)

(psi)

(ks!)

(ksf)

(

(pcf)

(

Failu

0.07

0.06

0.16

0.76

0.30

0.07

0.32

0.1

TYPE

FAILURE

Plus

Signs[+]

denot

tests

exceeded the

Bulge

capacity

of the measuring device

ngl

e Shear

Plane

Multiple

Shea

Plane

NP= Non Plastic

Materia

Vertica

l Fracture

::u

;i.

(])

Che

d B

ppro

By:

Date:

Summary of Te

t R

sults

ati

Tests

Passi

astic

Moisture

Submerged

No.

Samp

epth

iqui

imit

Conte

it Weight

(ft)

dex

(%)

(

'/,)

(

cf)

Sieve

39.50

40.00

0.00

45.00

49.00

49.50

.80

59.50

60.00

65.00

66.00

NOTE

TYPE OF

U -

ned

ess

soli

ate

-U

dra

d Tr

iaxial

Consolida

ed-

ained

riaxial

0201

6505-2

05-Se

-2008 (V

Texas Offshore Port Syste

1 P

LET

Galves

tren

th E

timate

Mini

Van

ests

ession Tests

(

ksf)

(ksf)

Confining

Undistuz1Jed

Remolded

6,o

Sub

ged

ilune

ype

Content

Pressun!

Strength

Stnmgth

Str2in

Unit Weigh

r.irn

Typ

Pcmetro

eter

Torvane

dist

bed

Remolded

Residu

Test

('/,)

(

si)

(ks!)

(ksf)

('/,)

(

cf)

(

)

F•llure

.19

0.14

.40

0.4

0.53

4.4

0.76

0.72

2.7

0.52

.74

7.2

.34

0.48

TYP

F F

s S

[

]

ote

s wh

ch exceeded the

A- B

capacity

he measuring device.

Sing

e Shea

C - Multi

le Shea

ane

= N

asti

Mate

D - Ve

rti

cal

act

;;o

-c,

::i.

!='

CJ1

"'O

CJ1

ked By:

Approved

,Cl

"'-

Summary of Test Results

Date

s-;b!)

e: .,,

/?.F

/-.

Job

No.:

oring:

Identifi

ati

n T

trengt

h E

sti

ate

iat

ane Te

Passing

(ksf)

(

ksf)

Liquid

Pl:astic

Mois

ure

Sub

erged

S•mple

Depth

uidity

Limit

tent

Unit Weig

200

No.

(ft)

Index

(%)

(

)

(pen

Sie

enetrometer

Torvane

Undisturbed

Remolded

Residua

75.50

0.42

0.65

85.00

1.40

85.00

85.50

86.00

3.00

1.10

.08

95.00

1.50

95.50

96.00

1.50

1.55

105.00

105

106

.47

.50

1.75

2.15

15.00

2.00

43 115.50

116

2.25

1.75

2.0

125.00

1.25

.75

46 125

126.00

.54

1.75

130.00

130.50

NOTE

E OFT

TYP

OF FAI

URE

fined C

ess

UU-

solida

-Und

ained

riaxial

Sin

le Shea

CU- Co

soli

ated

dra

ined

Tri

axia

ple She

r P

D -

Vertical

ract

Drawn By:

-11.,,

//.<"

Date:

915'

/cf

0201

6505-2

Sep

2008

0fer. #5)

exas

Offshore

Port Sys

em, SPM

Galveston

Compre

n T

sts

Moisture

fin

Undisturbed

olded

&,a

merged

Failura

Type

Content

Pressun:

Stn!

Stre

gth

Str.al

it We

ght

Strain

Type of

Test

)

(psi)

(ksn

<ksn

('kl

(ptn

(

)

lure

4.16

8.2

1.23

120

2.24

0.57

120

.39

0.5

2.37

0.7

0.5

121

.48

1.9

us Sig

s [

] de

ote test

whic

exceeded

the

capacity

of t

eas

ring device.

= N

n P

astic Material

::0

-0

;::i.

....

Summary of Test Results

Job No.:

0201-6505-2

05-Sep-2008

(Ver

#5)

Boring: Texas Offshore Port System, SPM #1

PLET

Block:

-59

Area: Galveston

u,~

~---,.--~~..-~~~~~~~~~~~~~~~~~~-,-~~~~~~~~..-~~~~~~~~~~--,-~~~~~~~~~~~~~~~~~~~~~~~~~~~~

S.1mple

Depth

Liquidity

No.

(ft)

Index

131.00

NOTES:

Passing

Liquid

Plastic

Moistu

Submerged

Limit

Content

Weight

200

('/.)

(II,)

(%)

(pc!)

Sieve

TYPE

OFTEST

Unconfined Compression

UU- Unconsolidated-Undrained

Triaxial

CU- Consolidated-Undrained

Triaxial

Penetrometer

Totvane

1.75

Undisturbed

Remoldcd

1.40

TYPE OF FAILURE

A- Bulge

Res

dual

Single Shear

Multiple Shear

Plane

D -

Vertical Fracture

Moistum

Type

Content

Test

{

'!.

)

Confining

Pressure

(psi)

Undisturbed

Stre

ngth

(ksf)

emoJded

ngth

(ksf)

bme

rged

ilure

UnitWeight

Strai

(pcf)

)

Typ

Failure

Plus

Signs[+] denote

tests

which exceeded the

capacity

of the

measuring

device

Non

Plastic

Material

I-

('.)

(/)

I-

()

0::

100

ecke

: <