· lbnl general purpose lab central plant berkeley, california ... ll - liquid limit (%) (astm d...

PROJECT NO. DATEFIGURE

ALAN KROPP& ASSOCIATES

Geotechnical

Consultants

KEY TO EXPLORATORY BORING LOGS

22335-12C May 2010

LBNL GENERAL PURPOSE LAB CENTRAL PLANTBerkeley, California

SILTS AND CLAYSSAND GRAVEL

COBBLES BOULDERSFINE MEDIUM COARSE FINE COARSE

200 40 10 4 3/4" 3" 12"U. S. STANDARD SERIES SIEVE CLEAR SQUARE SIEVE OPENINGS

GRAIN SIZES

GROUPSYMBOL

SECONDARY DIVISIONS

GROUP NAMECRITERIA *GW

GP

GM

GC

SW

SP

SM

SC

CL

ML

OL

CH

MH

OH

PT

PRIMARY DIVISIONS

CLEAN GRAVELSLESS THAN5% FINES

GRAVELS WITHFINES - MORE

THAN 12% FINES

CLEAN SANDSLESS THAN5% FINES

SANDS WITHFINES - MORE

THAN 12% FINES

INORGANIC

ORGANIC

INORGANIC

ORGANIC

CO

AR

SE

-GR

AIN

ED

SO

ILS

MO

RE

TH

AN

50%

RE

TA

INE

D O

N N

O.2

00 S

IEV

E

FIN

E-G

RA

INE

D S

OIL

S50

% O

R M

OR

E P

AS

SE

S T

HE

NO

.200

SIE

VE

Well-graded gravel

Poorly-graded gravel

Silty gravel

Clayey gravel

Well-graded sand

Poorly-graded sand

Silty sand

Clayey sand

Lean clay

Silt

Fat clay

Elastic silt

Peat

Organic Clay & Organic Silt

Organic Clay & Organic Silt

Cu ≥ 4 AND 1 ≤ Cc ≤ 3 A

Cu < 4 AND/OR 1 > Cc > 3

FINES CLASSIFY AS ML OR MH

FINES CLASSIFY AS CL OR CH

Cu ≥ 6 AND 1 ≤ Cc ≤ 3

Cu < 6 AND/OR 1 > Cc > 3

FINES CLASSIFY AS ML OR MH

FINES CLASSIFY AS CL OR CH

PI > 7 AND PLOTS ON OR ABOVE "A" LINE

PI < 4 OR PLOTS BELOW "A" LINE

LIQUID LIMIT - OVEN DRIED

LIQUID LIMIT - NOT DRIED< 0.75

PI PLOTS ON OR ABOVE "A" LINE

PI PLOTS BELOW "A" LINE

PRIMARILY ORGANIC MATTER, DARKIN COLOR, AND ORGANIC ODOR

LIQUID LIMIT - OVEN DRIED

LIQUID LIMIT - NOT DRIED< 0.75

REFERENCE: Unified Soil Classification System (ASTM D 2487-06)

SOIL CLASSIFICATION CHART

A – Cu = D60/D100 & Cc = (D30)2 / (D10 x D60)

SYMBOLS

Bag Sample

Standard PenetrationTest Split Spoon(2-inch O.D.)

Modified CaliforniaSampler(3-inch O.D.)

Thin-walled SamplerTube (either Pitcher orShelby) (3-inch O.D.)

Rock Core

Groundwater Level

ABBREVIATIONS

INDEX TESTS

LL - Liquid Limit (%) (ASTM D 4318-05)

PI - Plasticity Index (%) (ASTM D 4318-05)

-200 - Passing No. 200 Sieve (%) (ASTM D 1140-00)

STRENGTH TESTS

PP - Field Pocket Penetrometer test of unconfined compressive strength (tsf)

TV - Field Torvane test of shear strength (psf)

UC - Laboratory unconfined compressive strength (psf) (ASTM D 2166-06)

TXUU - Laboratory unconsolidated, undrained triaxial test of undrained shear strength (psf)

(ASTM D 2850-03a)

MISCELLANEOUS

ATOD - At time of drilling

psf/tsf - pounds per square foot / tons per square foot

psi - pounds per square inch (indicates relative force required to advance Shelby tube sampler)

* Criteria may be done on visual basis, not necessarily based on lab testing

GRAVELSMORE THAN 50% OFCOARSE FRACTION

RETAINED ON NO.4 SIEVE

SANDS50% OR MORE OF

COARSE FRACTIONPASSES NO. 4 SIEVE

SILTS AND CLAYSLIQUID LIMIT LESS

THAN 50%

SILTS AND CLAYSLIQUID LIMIT 50%

OR MORE

HIGHLY ORGANIC SOILS

CONSOLIDATION OF SEDIMENTARY ROCKS; usually determined from unweathered samples. Largely dependent on cementation.

U = unconsolidated P = poorly consolidated M = moderately consolidated W = well consolidated

BEDDING OF SEDIMENTARY ROCK

Splitting PropertyMassiveBlockySlabbyFlaggyShaly or platyPapery

ThicknessGreater than 4.0 feet2.0 to 4.0 feet0.2 to 2.0 feet0.05 to 0.2 feet0.01 to 0.05 feetLess than 0.01 feet

StratificationVery thick-beddedThick-beddedThin-beddedVery thin-beddedLaminatedThinly laminated

FRACTURING

IntensityVery little fracturedOccasionally fracturedModerately fracturedClosely fracturedIntensely fracturedCrushed

HARDNESS

1. Soft - Reserved for plastic material alone.2. Low Hardness - Can be gouged deeply or carved easily by a knife blade.3. Moderately Hard - Can be readily scratched by a knife blade; scratch leaves a heavy trace of dust and is readily visible after the powder has been blown away.4. Hard - Can be scratched by a knife blade with difficulty; scratch produces little powder and is often faintly visible.5. Very Hard - Cannot be scratched by a knife blade; leaves a metallic streak

STRENGTH

1. Plastic - Very low strength.2. Friable - Crumbles easily by rubbing with fingers.3. Weak - An unfractured specimen of such material will crumble under light hammer blows.4. Moderately Strong - Specimen will withstand a few heavy hammer blows before breaking.5. Strong -Specimen will withstand a few heavy ringing hammer blows and will yield with difficulty only dust and small flying fragments.6. Very Strong -Specimen will resist heavy ringing hammer blows and will yield with difficulty only dust and small flying fragments.

WEATHERING - the physical and chemical disintegration and decomposition of rocks and minerals bynatural processes such as oxidation, reduction, hydration, solution, carbonation, and freezing and thawing.

D. Deep - Moderate to complete mineral decomposition; extensive disintegration; deep and thorough discoloration; many fractures, all extensively coated or filled with oxides, carbonates and/or clay or silt.M. Moderate - Slight change or partial decomposition of minerals; little disintegration; cementation little to unaffected. Moderate to occasionally intense discoloration. Moderately coated fractures.L. Little - No megascopic decomposition of minerals; little or no effect on normal cementation. Slight and intermittent, or localized discoloration. Few stains on fracture surfaces.F. Fresh - Unaffected by weathering agents. No disintegration or discoloration. Fractures usually less numerous than joints.

Size of Pieces in FeetGreater than 4.0 feet1.0 to 4.0 feet0.5 to 1.0 feet0.1 to 0.5 feet0.05 to 0.1 feetLess than 0.05 feet

ALAN KROPP& ASSOCIATES

Geotechnical

ConsultantsPROJECT NO. DATE

FIGURE 32335-12C May 2010


PHYSICAL PROPERTIES CRITERIA FOR ROCK DESCRIPTIONS

Looking Northwest toward Buildings 41 and 4 (in distance)

Looking Southeast toward Building 28 (in distance)

18.4

10.5

14.5

PP = 1.75 tsfLL = 77PI = 56

-200 = 81%

LOGGED BY: DI

DATE DRILLED: 4/16/10BORING DIAMETER: 4 inches

DRILL RIG: B-24, Solid Flight Auger SURFACE ELEVATION: 917.5 feet (see notes)

DEPTH TO GROUNDWATER: 31 feet (see notes)

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EXPLORATORY BORING LOG

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DESCRIPTION AND REMARKS

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1 of 3 BORING AKA-52335-12CPROJECT NO.


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CLAY, Lean - with silt and sand, dry tomoist

CLAY, Fat - with silt, trace coarse sand,dry to moist

VOLCANICS - deeply weathered, friableto weak, soft to low hardness, with angularfragments of weathered andesite

-plastic to friable

Dark Gray

Dark ReddishBrown to DarkBrown

Reddish Brown toGrayish Brown

Reddish Brownwith some VeryDark Gray

Mottled ReddishBrown, GrayishBrown and VeryDark Gray

Stiff

Very Stiff

CL

CH

BEDROCK

14.5

9.1

(3 days afterdrilling)

(ATOD)

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SHEETDATEMay 2010A

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41

50/3"

40

31

VOLCANICS - deeply weathered, friableto weak, low hardness, with angularfragments of weathered andesite

-23' harder drilling

-no recovery in sample barrel

-29' drilling is smoother

SILTSTONE - deeply weathered, friable,low hardness

Bottom of boring at 41.5 feet.

Reddish Brownwith some VeryDark Gray

Gray

BEDROCK

BEDROCK

NOTES:

1. Groundwater was encountered at approximately 38 feet at the time of drilling and was at a depth of about 31 feet 3 days afterdrilling was complete. (See report for discussion.)

2. Stratification lines represent the approximate boundaries between material types and the transitions may be gradual.

3. Penetration resistance values (blow counts) enclosed in brackets ([ ]) were recorded with a 3.0-inch O.D. Modified Californiasampler; these are not standard penetration resistance values.

4. Boring location levations were surveyed by LBNL subcontractor.

5. Approximate unconfined compressive strength values were recorded in the field using a pocket penetrometer. These values areshown on the logs and are preceded by the symbol "PP".

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26.1

16.8

15.5

89

103

PP = 2.5 tsfLL = 65PI = 46

-200 = 76%

LOGGED BY: DI

DATE DRILLED: 4/16/10BORING DIAMETER: 4 inches

DRILL RIG: B-24, Solid Flight Auger SURFACE ELEVATION: 925 feet (see notes)

DEPTH TO GROUNDWATER: (see notes)

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[23]

[39]

[67]

CLAY, Lean - with silt and sand (fine tocoarse grained), dry to moist

CLAY, Fat - with silt, trace coarse sand,dry to moist

VOLCANICS - deeply weathered, friable,soft to low hardness, with angularfragments of weathered andesite

Dark Gray to DarkReddish Brown

Dark ReddishBrown

Reddish Brown toDark Gray

Reddish Brownwith some Brownand YellowishBrown

Dark ReddishBrown with someGray and VeryDark Gray

Stiff

Stiff to Very Stiff

CL

CH

BEDROCK

17.8

13.7

NOTES:

1. No groundwater was encountered at the time of drilling and the boring was backfilled immediately after drilling. (See report fordiscussion.)



4. Boring location levations were surveyed by LBNL subcontractor.

5. Approximate unconfined compressive strength values were recorded in the field using a pocket penetrometer. These values areshown on the logs and are preceded by the symbol "PP".

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VOLCANICS - deeply weathered, friable,low hardness, with angular fragments ofweathered andesite

-friable to weak


Mottled Gray,Olive Gray andReddish Brown

Mottled Gray andReddish Brown

BEDROCK

FILL

LOGGED BY: SS

DATE DRILLED: 5/19/09BORING DIAMETER: 4 7/8 inches

DRILL RIG: Fraste Multidrill XL, Rotary Wash SURFACE ELEVATION: 929.9 (see notes)

DEPTH TO GROUNDWATER: (see notes)

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1 of 5 BORING AKA-22335-12PROJECT NO.

LBNL B25 AREA PROJECTBerkeley, California

SHEETDATEMay 2009A

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5-12

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B25

AR

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A 2

.GP

J A

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[30]/3"

[50]/3"

[50]/4.5"

Asphalt Concrete - 2-inchesGRAVEL, Poorly Graded - sandy, wellcompacted, no plasticity, dry (RoadAggregate Base)

VOLCANICS - Rhyolite, moderatelyweathered, weak, breaks into indiscernablerubble during drilling, dry

Light Brown

Yellowish Brown

Medium Dense GP

BEDROCK

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SHEETDATEMay 2009A

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B25

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[50]/3"

83

75

-Andesite, moderately weathered, weak

-Rhyolite, with mineralization, hard,fractured, with weak granular weatheredrock matrix

Yellowish Brown

Grayish Greenwith Red

BEDROCK

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B25

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72

50/5"

50/5"

50/4.5"

-clay lined fractures mixed with volcanicrock blocks, not continuous, brownish withmanganese staining

-Andesite, volcanics, very fine grained(Basalt?)

-Rhyolite, with mineralization, volcanics(Basalt?)

Grayish Greenwith Red

Greenish Brown

BEDROCK

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SHEETDATEMay 2009A

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B25

AR

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DT

4/

1/1

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50/4.5"

50/3.5"

68

-hard, heavily weathered volcanics(Basalt?)

-0.2 to 0.1 foot pieces of subangular clastsof fractured volcanic Basalt from 72.5 to 74feet

-weathered with iron oxide zones alongfractures, no continuous clay seams,fractured Basalt 0.2 to 0.3 foot diameter,moist to wet

-becomes more competent with depth,larger fracturing blocks, no thick or laterallycontinuous clay seams

-Andesite, tuffacious in spots, flecks ofBasalt, deeply weathered, quartz veins,Rhyolite, larger clasts than above

-more competent, fine grained

Greenish Brown

Black

Dark GrayishBrown withReddish Overtone

BEDROCK

NOTES:

1. Groundwater levels were obscured due to rotary was drilling method (See report for discussion).



4. Elevations were determined from survey performed by LBNL subcontractor.

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SHEETDATEMay 2009A

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B25

AR

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0

-becomes fractured and brecciated, smallerclasts

-deeply weathered

SILTSTONE/CLAYSTONE - with volcanicgravels

SILTSTONE - little weathering, weak,slightly fractured

-competent and hard

-massive

CLAYSTONE - friable to weak,moderately fractured along planes, someharder clasts of calcite


Dark GrayishBrown withReddish Overtone

Reddish Brown

Dark Bluish Gray

Greenish Gray

Bluish Gray

BEDROCK

BEDROCK

BEDROCK

BEDROCK

· lbnl general purpose lab central plant berkeley, california ... ll - liquid limit (%) (astm d...

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