Mesa de Oro Raney geotechnical direct shear data

SFUKD RECORDS CTR

4913-00127

AR0090

SFUND RECORDS CTR

88222460

MESA de ORORANEY GEOTECHNICALDIRECT SHEAR DATA

June 1995

Geotechnical Research & Development

June 1, 1995

GET Environmental Services120 West Dayton, Suite A-7Edmonds , Washington98020

RE: Mesa de Oro, Raney Geotechnical Data

Attn: Jayne Nelson

Dear Ms Nelson

Attached please find the data submitted to GRD by RaneyGeotechnical related to direct shear tests conducted onrepresentative soil samples from borings three and four on theabove project. Based on our recent discussion with Mr. BradShipley it was decided to submit this data separately from thereport on slope stability due to significant questions concerningits applicability.

The types of soils involved in the testing by Raney Geotechnicalmay be classified as fine grained, very silty sands or very sandysilts. Upon receipt of the enclosed data from Raney, the data wassubjected to standard methods of analysis. The resultant angles ofinternal friction thus obtained were, for the most part, in excessof forty degrees. Comparison of the angles of internal frictionobtained from the Raney data with those from standard soilsengineering references indicates that this questionably high.

The soil types indicated by gradation testing of sample splits fromthe samples submitted to Raney for shear testing indicate that thesoils are similar to the silty sand, dense to loose portrayed onthe attached chart entitled "Typical Internal Friction Angles fromPublished Sources".

The questions generated by comparison of the Raney results withthose calculated for the similar samples from adjacent borings thatwere tested by J.H. Kleinfelder Associates (JHK) raised additionalquestions. The JHK data was reported in the report on SlopeStability. Both sets of laboratory data were subjected toregression analysis by GRD. The resulting data is attached.

(209)267-5370 . 30 Church Street . POit Office Box 67? . Sutler Creek. California 9^>8S . FAX (?09) ?67 9?85

Upon analysis of the regression analysis results, the fundamentalquestions still remained. Raney Geotechnical was contacted. Theirresponse is attached which, based on their comments concerninginterpretation of the data, introduces further questions.

Given the questions raised and the ambiguity of the "responses" tothose questions obtained, it is the professional opinion of theundersigned that the Raney Geotechnical data can not be utilizedwith confidence in the evaluation of slope stability for the Mesade Oro project.

Respectfully submitted,GEOTECHNICAL RESEARCH

ID .DEVELOPMENT

Michael R. FlynnCertified Engineering GeologistCEG 1127

Attachments

TYPICAL INTERNAL FRICTION ANGLESFROM PUBLISHED SOURCES

Reference Soil Type Description Friction angle range (tvp.1

(1)(2)(3)

(3)

(1)(2)(3)

(1)(2)

(1)(2)

(1)(2)(3)

(1)(2)(3)

Sand, crushed, angular, looseSand, angular, well graded, looseSand, angular, loose

Sand, angular, medium

Sand, crushed, angular, denseSand, angular, well graded, denseSand, angular, dense

Silty sand, looseSilty sand, loose

Silty sand, denseSilty sand, dense

Silt, inorganic, looseInorganic silt, looseSilts

Silt, inorganic, denseInorganic silt, denseSilts

CD Stability Analysis of Earth Slopes: Van Nostrand Reinhold:

(2) Foundation

(3) Introduction

Engineering: J. Wiley & Sons; 1974

to Soil Mechanics: Iowa State University: 1979

32-3633

30-35

35-40

35-4545

40-45

25-3527-33

30-3630-35

25-3527-3026-35

30-3530-3426-35

1983

Geotechnical Research and Development

B-1 @7.5'{JHK)

JHK GRD Regression (JHK data)

0.66 0.54 Regression Output:

1.14 0.76 Constant 0.0487

2.29 1.62 StdErrofYEst 0.0779R Squared 0.9907

aoif: 33 No. of Observations 3cohesion 0.06 Degrees of Freedom 1

X Coefficient(s)StdErrofCoef.

0.67820.0657

aoif (degcohesion

34.1440.0487

B-1 @ 12.5'(JHK)

JHK0.63

1.18

2.29

aoif:cohesion

0.49

0.61

1.27

270.10

GRD Regression (JHK data)Regression Output:

Constant 0.1231

SldErrofYEst 0.1109R Squared 0.9651No. of Observations 3Degrees of Freedom 1

X Coefficienl(s)

SldErrofCoef.

0.4879

0.0928

aoif (degcohesion

26.010.1231

B-2@ 12.5'(JHK)

" JHK0.661.24

2.26

aoif:cohesion

0.470.661.67

360.00


Constant 0StdEr ro fYEs t 0.1592R Squared 0.9391No. of Observations 3Degrees of Freedom 2

X Coefficient(s) 0.6924StdErrofCoef. 0.0598

aoif (degcohesion

34.6990

B-2@15'(JHK)

JHK GRD Regression (JHK data)0.68

1.22.26

aoif:cohesion

0.61

0.86

1.48

290.20

Regression Output:

ConstantSldErrofYEstR SquaredNo. of ObservationsDegrees of Freedom

0.21650.02910.9979

3

1

X Coefficient(s)Std Err of Coef.

0.55570.0256

aoif (degcohesion

29.060.2165

B-2@ 17.5'(JHK)

JHK GRD Regression (JHK data)0.651.212.32

aoif:cohesion

0.651

1.41

21

0.5

Regression Output:ConstantStdErro fYEstR SquaredNo. of ObservationsDegrees of Freedom

0.40270.07630.9799

3

1

X Coefficient(s) 0.443Std Err of Coef. 0.0635

aoif (degcohesion

23.8940.4027

B-2@20'(JHK)

JHK

0.651.242.23

aoif:cohesion

0.930.810.94

30.85


Constant 0.8669StdErro fYEst 0.1R Squared 0.0452No. of Observations 3Degrees of Freedom 1


aoif (degcohesion

1.104

0.8669

B-2@ 22.5'(JHK)

JHK GRD Regression (JHK dala)

0.66

1.212.26

aoif:cohesion

0.78

0.971.53

260.42

Regression Output:

Constant

StdErrofYEst

R SquaredNo. of ObservationsDegrees of Freedom

0.4362

0.0545

0.990231


0.47730.0474

aoif (degcohesion

25.5150.4362

B-2 @ 20'(JHK)

JHK GRD Regression (JHK data)0.671.25

2.49

aoif:cohesion

0.670.87

1.4

220.39

Regression Output:Constant

StdErro fYEstR SquaredNo. of ObservationsDegrees of Freedom

0.3843

0.02610.9976

31


0.40530.0198

aoif (degcohesion

22.060.3843

B-3@ 2.5'(Raney)

Raney max. shear0.6

1.092.075

aoif:cohesion

0.77

1.432.3

440.26

GRD Regression (max shear)Regression Output:

Constant 0.226StdErro fYEst 0.1216R Squared 0.9874No. of Observations 3Degrees of Freedom 1

X Coefficienl(s) 1.0151Std Err of Coef. 0.1145

Raney 3% strain0^6 CU37

1.09 1.0132.075 1.44

aoif (degcohesion

26.9890.4018

aoif (degcohesion

45.430.226

B-3 @ 5.0' (Raney)

Raney max, shear

OS" 0.472~

1.09 1.12

2.075 1.683

aoif:cohesion

80.4

GRD Regression (max shear)

Regression Output:

Constant 0.0427

StdErrofYEst 0.2291

R Squared 0.9353

No. of Observations 3Degrees of Freedom 1

Raney 3% strain

0.6 0.326

1.09 0.842

2.075 1.27

aoif (degcohesion

31.40.0466


aoif (degcohesion

39.3490.0427

B-3 @ 7.5' (Raney)

Raney max, shear06 07<F

1.09 1.27

2.075 2.473

aoif:

cohesion

49

0.05


Constant 0.0645

StdErrofYEst 0.0634

R Squared 0.9973


X Coefficient(s) 1.1526

Std Err of Coef. 0.0597

Raney 3% strain0.6 0.515

1.09 0.927

2.075 1.58

aoif (degcohesion

35.5090.1119

aoif (degcohesion

49.054

0.0645

B-3 @ 10.0' (Raney)

Raney mnx. shear

0.6 oTefs"1.09 1.24

2.075 1.906

aoif:cohesion

39

0.23


Regression Output:Constant 0.1944

StdEr ro fYEst 0.1556R Squared 0.9708



0.84480.1465

Raney 3% strain

O6 0.4471.09 0.79

2.075 1.34

aoif (degcohesion

30.9070.1077

aoif (degcohesion

40.1930.1944

B-3@ 12.5'(Raney)

Raney max. shear

6!6 0.704

1.09 1.2372.075 2.061

aoif: 41cohesion 0.25

GRD Regression (max shear) Raney 3% strain

Regression Output:

Constant 0.1945SldErrofYEst 0.0659R Squared 0.9954No. of Observations 3Degrees of Freedom 1

X Coefficients)StdErrofCoef.

aoif(deg 42.239cohesion 0.1945

0.9080.062

[email protected]'(Raney)

Raney max, shear

1.09 1.134

2.075 1.872

aoif: 39cohesion 0.175


Constant 0.1614

StdEr ro fYEs t 0.0786R Squared 0.9922



1.09 0.8762.075 1.374

aoif (degcohesion

30.5850.1686

X Coefficienl(s)

StdErrofCoef.

aoif (deg 39.844cohesion 0.1614

0.8345

0.074

[email protected]' (Raney)

Raney max. shear0^6~ ~ "0.653

1.09 1.374

2.075 2.13

aoif:cohesion

420.24

Re_gression (max shear)Regression Output:

Constant 0.1712StdErrofYEsl 0.1846R Squared 0.9688


X Coefficienl(s) 0.9677StdErrofCoef. 0.1738


1.09 0.9452.075 1.511

aoif (degcohesion

34.235

0.125

aoif (degcohesion

44.059

0.1712


Raney max, shear

0.6 0.824

1.09 1.41

2.075 2.473

aoif:cohesion

330.62


Regression Output:

Constant 0.173StdErrofYEst 0.0306R Squared 0.9993



1.09 1.2022.075 1.958

aoif (degcohesion

40.9540.1818

X Coefficient(s) 1.1124

StdErrofCoef. 0.0288

aoif (deg

cohesion

48.0450.173

B-4@ 10.0' (Raney)

Raney max, shear0.6 0.55

1.09 1.151

2.075 1.649

aoif:cohesion

32

0.325


Constant 0.2249

StdErrofYEst 0.1891

R Squared 0.941


Raney 3% strain~~

1.09

2.075

aoif (degcohesion

0.79

1.254

29.5250.1022

X Coefficient(s)

Std Err of Coef.

0.7106

0.178

aoif (degcohesion

35.3970.2249


Raney max, shear0 ~ 6 0 . 5 5

1.09 1.134

2.075 2.061

aoif:cohesion

45

0


Constant 0StdErrofYEst 0.048R Squared 0.996


Raney 3% strainOS 0.378

1.09 0.859

2.075 1.546

aoif (deg

cohesion

37.893

0

X Coefficient(s) 0.9981StdErrofCoef. 0.0198

aoif (degcohesion

44.9460


Raney max. shear0 6 6 . 6 3 6 "

1.09 1.1512.075 1.683

aoif:cohesion

330.35


Constant 0.2965StdErrofYEst 0.134R Squared 0.9672No. of Observations 3Degrees of Freedom 1

Raney 3% strain

6 T ~ b T s T1.09 0.962

2.075 1.443

aoif (degcohesion

30.4790.2464


aoif (degcohesion

34.4260.2965

B-4@ 17.5* (Raney)

Raney max. shear0.6 0.859"

1.09 1.032.075 1.786

aoif:cohesion

360.325


Constant 0.4111

StdErro fYEst 0.1098R Squared 0.9752No. of Observations 3Degrees of Freedom 1


0.64850.1033

Raney 3% strainO6 0.498

1.09 0.7732.075 1.305

aoif (degcohesion

28.6390.1733

aoif (degcohesion

32.9630.4111

B-4 @ 20.0' (Raney)

Raney max. shear0.6

2.075

aoif:cohesion

0.551.597

320.25

GRD Regression (max shear)chy: 1.05chx: 1.48

slpe: 0.71aoif: 35.375coh: 0.12

Raney 3% strain

22.5'(Raney)

Raney max. shear GRD Regression (max shear) Raney 3% strain

0.6 0.58 Regression Output: 0.6 0.412

1.09 0.756 Constant 0 1.09 0.653

2.075 1.924 StdErrofYEst 0.1637 2.075 1.208R Squared 0.9498

aoif: 42 No. of Observations 3 aoif(deg 28.506cohesion 0 Degrees of Freedom 2 cohesion 0.0761


aoif(deg 41.42cohesion 0

R-HNE. ' TEi:91 ' : . -371-l :;09 May 13'95 9 : 4 0 No. 004 P . 01

[1 Geotechnical0)cCD FAX MEMO

DC

To: Robin Peters, GRDFax Number: 209-267-9285From: Bil l Boli5/18/95

As you requested, attached arc (wo plots of direct shear data for Mesa De Oro sample B3 7.5 . For mostmaterials, the ul t imate values (10% to 15% strain; displacement 0.2 to 0.3 inches) usually provides themost reasonable plots. On some materials, however, the shear strength at the beginning yield point givesmore consistent and reasonable values. Experience has shown that the yield point usually occurs aroundthree percent strain (displacement 0.06+ inches). On many soils, the vertical height on the shear testcan give a clue as to when yie lding occurs as yielding is usually accompanied by dilation which resultseither in an increase in sample height or at least a decrease in the rate of consolidation. Scanning the testresults shows that for many samples the dilation occurs at displacements of 0.06 to 0.07 inches.

The decision as to whether to use yield or u l t ima te values may be made based on which gives the mostconsistent and reasonable results. To make this determination, all tests on a particular material type canbe placed on the same plot.

1 understand you had questions regarding whether a constant sample area was assumed in calculatingstresses. For all the results we presented to you, a constant area based on a 1.93-inch diameter samplewas assumed. Adjustments could be made to the area as the shear test progresses; however, the geometryof shearing circular samples is complex and the effects of the overlapping lips of the shear box du r ingshearing arc indeterminate. Since the direct shear lest is only intended as quick and inherent lyapproximate method to obtain soil strengths, the assumption of a constant shear area is reasonable. Keepin mind that if the calculation? are made using a sample area that changes with the strain, then the normalstress also must be recalculated for each value of strain. The effect is that of increasing both the shearand normal stresses at the same rate, so that the data point moves up the graph practically along the lineof the strength envelope. Therefore use of a variable area versus a constant area usual ly has a negligibleeffect on the calculated fr ic t ion angle and cohesion.

31-10 BEACON BLVD «WLS1 SACRAMENTO. CA &5C'91 • TELEPHONE SMG/371 -0-13.1 • FAX 916O71 IBM

C 'RHE1 ' GEOTE' IHI I ICHl TEL :91': '-371-i?09 May 18 '95 9 : 4 1 No .004 P . 0 2

o ^>'c&

Geotechnical

cCO

QC

May 8, 1995

Geotechnical Research and DevelopmentAttention: Mike FlynnP.O. Box 1196Sutter Creek, CA 95685

LABORATORY TESTINGMesa de OroSutter Creek, CaliforniaReference No. 1301-001

On the attached plates are the results of laboratory direct shear tests performed on tubesamples submitted for the subject project. The tests were performed in accordance with theASTM D 3080-90 test procedure.

Should you have any questions, please contact the undersigned.

Very truly yours,

RANEY GEOTSCHNICAL

Steven E. LeeLaboratory Manager

(2) AddresseeSEL/ep

3140 BEACON BLVD. 'WEST SACRAMENTO, CA 95691 • TELEPHONE 916/371-0434 • FAX 916/371 1009

DIRECT SHEAR TEST(ASTM D3080)

Sample Data

Project: Mesa De Oro

Description: Brown fine sand

Initial Moisture Content: 5.4%

Sample No. B3 2.5 A

Initial Dry Density: 80 pcf

F inal Moisture Content: 30.0%

Test Data

Sample Diameter: 1.93 inches

Test Condition: Submerged

Strain Rate: 0.022 in/niin

Normal Stress: 600 psf

: Shear Displacement: (inches* IP : •• ;-.-'

0

0

10

20

30

40

50

60

70

80

90

100

150

200

250

300

(^^•^ Sample Height•' :^::* (inches) ': '•

1.500

1.4451

1.443

1.442

1.441

1.441

1.441

1.441

1.442

1.442

1.443

1.443

1.447

1.447

1.447

1.447

Shear Stress(psf)'"'

0

0

344

429

481

550

601

670

721

721

756

756

756

756

773

773

1. Sample was allowed lo consolidate for 10 minutes under normal stress prior to commencement of shear test.

DIRECT SHEAR DATA


Sample Data




Sample No. B3 2.5 B


Final Moisture Content: 29.0%

Test Data



Strain Rale: 0.022 in/mm


Shear Displacement(inches x Iff3

0

0

10

20

30

40

50

60

70

80

90

100

150

200

250

300

^Sample Height'•-••-• -.•:'' •• (inches)

1.500

1.460'

1.458

1.457

1.456

1.456

1.456

1.456

1.456

1.457

1.458

1.458

1.464

1.466

1.466

1.466

Shear Stress(psf)

0

0

378

532

618

790

893

1013

1134

1237

1305

1374

1425

1202

1151

1185

1. Sample was allowed lo consolidate for 10 minutes under normal stress prior to commencement of shear lest.

DIRECT SHEAR DATA

DIRECT SHEAR TEST(ASTM D30SO)

Sample Data




Sample No. B3 2.5 C



Test Data



Strain Rate: 0.022 in/miu


Shear Displacement ;(inches x Iff3

0

0

10

20

30

40

50

60

70

80

90

100

150

200

250

300

Sample Height••"•'•';. ;•:' (inches)

1.500

1.441'

1.441

1.438

1.436

1.434

1.433

1.433

1.432

1.432

1.432

1.432

1.434

1.436

1.436

1.435

Shear Stressta0": :

0

0

309

687

893

1065

1271

1443

1511

1649

1769

1889

2267

2301

2250

2233

1. Sample was allowed to consolidate for 10 minutes under normal stress prior lo commencement of shear test.

DIRECT SHEAR DATA


Sample Data


Description: Brown, fine sand


Sample No. B 3 5.0 A



Test Data



Strain Rate: 0.022 in/min


Shear Displacement: (inches x 10* . ' . . ' . ' ' " . . ' "? /

0

0

10

20

30

40

50

60

70

80

90

100

150

200

250

300

:.... • Sample Height'.'.'•.'• : (inches)

1.500

1.420'

1.419

4.415

1.414

1.412

1.411

1.409

1.409

1.408

1.408

1.408

1.407

1.407

1.407

1.407

Shear Stress; - (ptf

0

0

137

240

292

309

292

326

344

344

344

378

412

412

412

412

1. Sample was allowed to consolidate for 10 minutes under normal stress prior to commencement of shear test.

DIRECT SHEAR DATA


Sample Data

Project: Mesa De Oro Sample No. B3 5.0 B

Description: Brown, fine sand Initial Dry Density: 78 pcf

Initial Moisture Content: 13.2% Final Moisture Content: 33.2%

Test Data

Sample Diameter: 1.93 inches Strain Rate: 0.022 in/min

Test Condition: Submerged Normal Stress: 1090 psf

Shear Displacement(inches x 10*

0

0

10

20

30

40

50

60

70

80

90

100

150

200

250

300

Sample Height,. (inches)

1.500

1.434'

1.431

1.429

1.427

1.426

1.425

1.424

1.423

1.423

1.423

1.423

1.423

1.423

1.422

1.421

Shear Stress

V fafl

0

0

378

515

618

687

756

807

842

876

927

962

1116

1099

1065

1065


DIRECT SHEAR DATA


Sample Data




Sample No. B3 5.0 C



Test Data





Shear Displacement i(inches x 103

0

0

10

20

30

40

50

60

70

80

90

100

150

200

250

300

••:•. •: Sample Height•'•'•' : (inches)

1.500

1.421'

1.418

1.425

1.413

1.412

1.411

1.410

1.409

1.408

1.407

1.407

1.405

1.404

1.404

1.403

Shear Stress(psf)

0

0

721

893

1030

1116

1202

1271

1340

1443

1494

1529

1683

1683

1666

1614


DIRECT SHEAR DATA


Sample Data




SatnpleNo. B3 7.5 A

Initial Dry Density: SO pcf


Test Data






0

0

10

20

30

40

50

60

70

80

90

100

150

200

250

300

.-.; , ' ,: ; ̂ Sample Height•(inches)

1.500

1.429'

1.424

1.423

1.421

1.420

1.419

1.418

1.418

1.417

1.417

1.417

1.417

1.417

1.418

1.418

Shear Stress"&&••••

0

0

309

378

412

446

498

515

550

567

584

618

704

756

790

756


DIRECT SHEAR DATA


Sample Data


Description: Brown, Fine sand


Sample No. B3 7.5 B



Test Data





Shear Displacement(indies x Iff3 •••:•':

0

0

10

20

30

40

50

60

70

80

90

100

150

200

250

300

Sample Height:-\;-.yi£'(iriche'sj " '•" • ••

1.500

1.457'

1.454

1.453

1.452

1.451

1.451

1.451

1.451

1.451

1.452

1.452

1.455

1.457

1.457

1.457

Shear Stress• ' (Ptf

0

0

412

550

653

756

859

927

996

1065

1099

1134

1271

1202

1168

1185


DIRECT SHEAR DATA


Sample Data




Sample No. B3 7.5 C

Initial Dry Density: S5 pcf


Test Data



Strain Rate: 0.022 in/ruin



0

0

10

20

30

40

50

60

70

80

90

100

150

200

250

300

Sample Height• • {inches)

1.500

1.422'

1.419

1.417

1.416

1.415

1.415

1.415

1.414

1.414

1.414

1.414

1.415

1.416

1.417

1.417

Shear Stress

(Ptf

0

0

687

996

1168

1305

1460

1580

1718

1786

1924

1992

2301

2473

2250

2233

1. Sample was allowed to consolidate for 10 minutes under normal stress prior lo commencement of shear test.

DIRECT SHEAR DATA


Sample Data



Initial Moisture Confetti: 8.69J

Sample No. B3 10 A



Test Data





Shear Displacement(inches x Iff3 ".;;. .•"••'

0

0

10

20

30

40

50

60

70

80

90

100

150

200

250

300

Sample Height: : v:; (inches) '

1.500

1.4301

1.427

1.424

1.423

1.421

1.420

1.420

1.419

1.419

1.419

1.419

1.419

1.420

1.420

1.420

Shear Stress(ptf

0

0

240

309

344

378

429

447

464

481

515

532

601

618

601

618


DIRECT SHEAR DATA


Sample Data




Sample No. B3 10 B



Test Data





Shear Displacement .'";(inches x 10* :]

0

0

10

20

30

40

50

60

70

80

90

100

150

200

250

300

; (Sample Height• ' . :: :- \\ * * finches) " ' • " •

1.500

1.4151

1.411

1.408

1.401

1.405

1.404

1.403

1.403

1.403

1.402

1.402

1.402

1.403

1.403

1.403

Shear Stress'(Ptf

0

0

447

515

584

687

721

790

859

910

962

996

1134

1168

1202

1237


DIRECT SHEAR DATA


Sample Data




Sample No. B3 10 C



Test Data





Shear Displacement ;;••'(inches x 103 • :;

0

0

10

20

30

40

50

60

70

80

90

100

150

200

250

300

/Sample Height'.••. ':v.:;:; (inches)

1.500

1.406'

1.404

1.402

1.400

1.399

1.398

1.397

1.397

1.397

1.397

1.397

1.398

1.399

1.399

1.399

Shear Stress(ptf

0

0

601

824

996

1151

1254

1340

1426

1511

1546

1580

1769

1821

1803

1906


DIRECT SHEAR DATA


Sample Data

Project: Mesa De Oro Sample No. B3 12.5 A

Description: Brown, fine sand w/clay Initial Dry Density: 72 pcf


Test Data

Sample Diameter: 1.93 inches Strain Rate: 0.022 Ln/min



0

0

10

20

30

40

50

60

70

80

90

100

150

200

250

300

: Sample Height':•• """' •£ -".: (inches)

1.500

1.2331

1.228

1.223

1.219

1.216

1.214

1.212

1.210

1.209

1.208

1.208

1.206

1.205

1.205

1.205

Shear Stress(psf)

0

0

240

275

309

344

344

378

412

412

429

464

481

515

532

704


DIRECT SHEAR DATA


Sample Data


Description: Red-bro\vn, sandy clay


Sample No. B3 12.5 B



Test Data





Shear Displacement(inches x 1G3

0

0

10

20

30

40

50

60

70

80

90

100

150

200

250

300

• Sample Height'•••:•: (inches)

1.500

1.397'

1.397

1.394

1.392

1.3S9

1.388

1.386

1.385

1.383

1.382

1.381

1.378

1.377

1.376

1.376

Shear Stress

<Ptf

0

0

120

429

515

618

653

687

756

807

859

893

1013

1082

1168

1237


DIRECT SHEAR DATA


Sample Data


Description: Red-brown, sandy clay

Initia I Moisture Content: 21.0%

Sample No. B3 12.5 C



Test Data

Sajnple Diameter: 1.93 inches




Shear Displacement(inches x 10*

0

0

10

20

30

40

50

60

70

80

90

100

150

200

250

300

Sample Height• ; < (inches)

1.500

1.352'

1.350

1.347

1.345

1.342

1.341

1.339

1.337

1.336

1.335

1.334

1.331

1.329

1.328

1.327

Shear Stress' W

0

0

687

893

1030

1151

1305

1443

1494

1580

1683

1752

1924

1992

2061

2061


DIRECT SHEAR DATA


Sample Data


Description: Dark grey fine sandy sill


Sample No. B4 2.5 A



Test Data





Shear Displacement ", ;"' '-.-. (inches x 10* •^•\^:.\-^

0

0

10

20

30

40

50

60

70

80

90

100

150

200

250

300

:. . .-^•••Sample Height ;;, , - ''••-••-•^•'^ (inches^ '"'"" ;" -' •

1.500

1.433'

1.430

1.427

1.425

1.424

1.423

1.423

1.422

1.422

1.422

1.421

1.421

1.420

1.420

1.420

Shear Stress• . , ,« , : • ; •• ; ta/)..- :v. • : , ' . ' : / ; , ; "

0

0

309

361

412

447

464

481

515

550

550

584

618

584

601

584


DIRECT SHEAR DATA


Sample Data


Description: Dark grey fine sandy silt

Initial Moisture Content: 17. 1 %

Sample No. B4 2.5 B



Test Data



Strain Rate: 0.022 in/min ' |

Normal Stress: 1090 psf j

Shear Displacement(inches x l(f} - ;

0

0

10

20

30

40

50

60

70

80

90

100

150

200

250

300

-•:-:-:-::-, •: : •'•A'. *-:. |:< : " < • • • : . .

Sample Height.'.. "'.."._ (inches)

1.500

1.392'

1.389

1.387

1.385

1.384

1.383

1.382

1.381

1.381

1.380

1.380

1.380

1.379

1.378

1.378

Shear Stress

(Ptf

0

0

378

498

618

704

790

824

876

927

962

1013

1082

1134

1134

1099


DIRECT SHEAR DATA


Sample Data


Description: Dark grey fine sandy silt


Sample No. B4 2.5 C



Test Data





Shear Displacement : :(inches x W3 "•••

0

0

10

20

30

40

50

60

70

80

90

100

150

200

250

300

. . - : : - . • . • ; • . - •. •

: .. -:Q- Sample Height":^:^W-(inches) ' ..'

1.500

1.3641

1.362

1.360

1.358

1.356

1.355

1.354

1.353

1.352

1.352

1.352

1.351

1.351

1.351

1.350

. Shear Stress•; ••••;-;••••,;,;." (psf) •

0

0

584

790

962

1082

1168

1271

1374

1443

1494

1614

1752

1872

1872

1838


DIRECT SHEAR DATA


Sample Data



Initial Moisture Content: 1,1%

Sample No. B4 5.0 A



Test Data





Shear Displacement : ; .-. •' V(inches x 103 : - I ; - '

0

0

10

20

30

40

50

60

70

80

90

100

150

200

250

300

: . 1 1 Sample Height \:'•••: î*::.'.:.!:: (inches) ' ' . ' • ' '

1.500

1.4341

1.432

1.431

1.429

1.429

1.428

1.428

1.428

1.428

1.428

1.428

1.430

1.432

1.431

1.431

Shear Stress:;. -••••-. (psf)

0

0

206

275

344

395

447

481

515

584

601

636

653

618

618

618

1. Sample was allowed to consolidate for 10 minutes under normal stress prior to commencement of shear lest.

DIRECT SHEAR DATA



Sample Data

Sample No. B4 5.0 B

Description: Brown fine sand Initial Dry Density: 78 pcf


Test Data

Sample Diameter: 1.93 inches Strain Rare: 0.022 in/min


Shear Displacement •(inches x 103 .;>;.;.. •

0

0

10

20

30

40

50

60

70

80

90

100

150

200

250

300

^ ; X: Sample Height '\ '•''••; :;iv (inches) ';:,..

1.500

1.443'

1.440

1.438

1.436

1.434

1.434

1.434

1.433

1.433

1.433

1.434

1.436

1.437

1.438

1.438

Shear Stressto/)

0

0

344

532

653

756

859

945

1013

1065

1168

1202

1374

1305

1271

1202


DIRECT SHEAR DATA


Sample Data




Sample No. B4 5.0 C



Test Data





Sh ear Displacement : : ; :.l :(inches x Kf3 .. ' .

0

0

10

20

30

40

50

60

70

80

90

100

150

200

250

300

"CI: "^'Sample Height ' "'";-'.,:;- -::.

;;:;>;;;;-: (inches) •'^•-

1.500

1.420'

1.417

1.416

1.414

1.414

1.413

1.413

1.413

1.412

1.412

1.413

1.414

1.415

1.415

1.414

:.;'••;•::: :::':" Shear Stress ' " •• '"-^, ;:.;.:

: '--^ :.r ::.: :: ;:- ::--:- :-. - . -0

0

653

927

1134

1271

1408

1511

1632

1718

1821

1889

2130

2027

1906

1906


DIRECT SHEAR DATA


Sample Data


Description: Broun fine sand

In ilia I Moisture Com em: 0.6%

Sample No. B4 7.5 A



Test Data





Shear Displacement : :(inches x 1 a3 .- V

0

0

10

20

30

40

50

60

70

80

90

100

150

200

250

300

" \^'-iTlSample' Height'•••'":. :.•:::;; (inches) ' •. •

1.500

1.443'

1.440

1.439

1.438

1.437

1.437

1.437

1.438

1.438

1.438

1.438

1.440

1.440

1.439

1.439

;" : : Shear Stress ZJ. '.-•-••- :frs/) : : : :

0

0

309

378

481

550

584

653

687

773

790

824

824

790

790

756


DIRECT SHEAR DATA


Sample Data



In itial Moisture Content: 3.4%

Sample No. B4 7.5 B



Test Data





Shear Displacement .'• '"'•]• (inches x Iff3 -.••

0

0

10

20

30

40

50

60

70

80

90

100

150

200

250

300

: : ;% Sample Height.."-': \'-'V'i';::

:: (inches) "''•" . . .

1.500

1.450'

1.447

1.445

1.444

1.444

1.444

1.444

1.445

1.445

1.446

1.446

1.448

1.448

1.447

1.447

Shear Stress•::":. .-^::"fa/r^ ;=---v ' '0

0

447

618

790

962

1099

1202

1271

1340

1391

1408

1340

1374

1374

1374


DIRECT SHEAR DATA


Sample Data

Project: Mesa De Oro Sample No. B4 7.5 C

Description: Brown fine sand Initial Dry Density: 86 pcf


Test Data

Sample Diameter: 1.93 inches Strain Rate: 0.022 uL/min


• : • ' : • Shear Displacement; (inches x 10* •]'..'. :::;" : •'

0

0

10

20

30

40

50

60

70

80

90

100

150

200

250

300

' :;:v';-i ;:; it Sample Height \ •'••':

; .• ; .- . ' . 3 •;';:::;::.;.:; (inches) ' '.'•'.' • - . . - ' " - ' . "

1.500

1.450'

1.449

1.446

1.445

1.445

1.444

1.444

1.445

1.445

1.446

1.447

1.452

1.455

1.454

1.453

Shear Stress••'• :- : ;::•:;• fa/) : ' ' ;

0

0

824

1030

1340

1580

1786

1958

2130

2267

2370

2473

2473

2301

1889

1821


DIRECT SHEAR DATA


Sample Data




Sample No. B4 10.0 A



Test Data





Shear Displacement • ' • . " ' " :(inches x 1G3

0

0

10

20

30

40

50

60

70

SO

90

100

150

200

250

300

. . ; •:; Sample Height. . : ;

: : . : ;: ' .•;, (inches) ••••" .

1.500

1.395'

1.390

1.387

1.384

1.382

1.380

1.379

1.377

1.377

1.376

1.376

1.375

1.375

1.375

1.375

Shear Stress• -.,-.: i-^" (ps/)- ^0

0

240

275

309

344

378

378

395

429

429

447

498

515

550

532


DIRECT SHEAR DATA


Sample Data


Description: Broun fine sand





Test Data






0

0

10

20

30

40

50

60

70

80

90

100

150

200

250

300

- Sample Height • -;.::.;; (inches)

1.500

1.4191

1.415

1.412

1.411

1.410

1.409

1.408

1.408

1.408

1.408

1.407

1.408

1.408

1.408

1.408

Shear Stress(P^f)

0

0

378

515

618

687

721

790

859

893

962

1013

1151

1134

1134

1030


DIRECT SHEAR DATA


Sample Data







Test Data





Shear Displacement .'.: ; . : . ; ' (inches x Iff3 ; :

0

0

10

20

30

40

50

60

70

80

90

100

150

200

250

300

: : ; ^Sample Height• " • . ..":.' • :t (inches) """" " :~' i ;

1.500

1.4141

1.412

1.408

1.405

1.402

1.401

1.399

1.397

1.396

1.396

1.395

1.393

1.392

1.391

1.391

Shear Stress(psf) • :

0

0

550

756

859

962

1099

1168

1254

1340

1391

1443

1649

1649

1614

1546


DIRECT SHEAR DATA


Sample Data







Test Data





Shear Displacement - . . . : ' -(inches x 10^ : : '. .•'

0

0

10

20

30

40

50

60

70

80

90

100

150

200

250

300

^^••:;j\ Sample Height "'• '"• ' - . ''•'•;•••' : ( • • • • '*•&?'••':. (inches) •'.-' " •'•'• '

1.500

1.431'

1.425

1.422

1.420

1.418

1.417

1.416

1.415

1.415

1.414

1.414

1.414

1.414

1.413

1.413

Shear Stress' • .:.--: — ( p s f ) • • :

0

0

206

275

309

309

344

378

378

412

447

447

515

550

515

550

1. Sample was allowed to consolidate for 10 minutes under normal stress prior lo commencement of shear lest.

DIRECT SHEAR DATA


Sample Data







Test Data





Shear Displacement . '• ' .'.'.: • (inches "x 10* ."• ;

0

0

10

20

30

40

50

60

70

80

90

100

150

200

250

300

.•••: •;: :.:;;.-: 4: Sample Height ."•- , '..'..-.:. ;;.:-';::'::;;.;:;::f (inches) '"'• ... ':'.--.

1.500

1.4141

1.407

1.404

1.401

1.399

1.398

1.397

1.396

1.395

1.394

1.394

1.393

1.393

1.393

1.393

: ; Shear Stress• : — • • • • to / ) • • ""-:'..

0

0

412

550

618

721

790

824

859

927

962

996

1134

1134

1134

1065


DIRECT SHEAR DATA


Sample Data

Project; Mesa De Oro






Test Data

Sample Diarneier: 1.93 inches




Shear Displacement i. • ' • ' ' . . ; : : . • : (inches x Iff1 . '•• '•'' -^ •';'. V:

0

0

10

20

30

40

50

60

70

80

90

100

150

200

250

300

- :Pr ^Sample Height : ; :.- . : ' . : V ;.:i: •':.:;•••" (inches) • :: :./ '

i:: /

1.500

1.423'

1.420

1.418

1.417

1.416

1.416

1.415

1.415

1.415

1.415

1.415

1.415

1.416

1.416

1.416

: : Shear Stress::.-:-:-iP' (pSf) :V.!£:'-:

0

0

790

1030

1202

1340

1443

1546

1649

1718

1786

1855

2027

2061

2027

1992


DIRECT SHEAR DATA


Sample Data


Description: Blue-grey fine silt





Test Data





-;: ::; Shear Displacement : :

• (inches x Iff3 ; yX. :

0

0

10

20

30

40

50

60

70

80

90

100

150

200

250

300

.:•: :s.; Sample Height.':'^':/t;;?T/incA*$) : '•: '••'••

1.500

1.4561

1.455

1.454

1.454

1.453

1.453

1.453

1.453

1.453

1.453

1.453

1.454

1.454

1.454

1.454

Shear Stress^•^^'(psti^--—-' '

0

0

275

344

378

447

481

550

584

618

618

636

618

567

567

550


DIRECT SHEAR DATA


Sample Data



Initial Moisture Conieni: 34.4%




Test Data



Strain Rale: 0.022 in/min


: . - Shear Displacement ', " •:: ^ (inches x Iff3 ' • - ' • • ' • • :

0

0

10

20

30

40

50

60

70

80

90

100

150

200

250

300

^Sample Height :"•'•" "•\:Mjf%.(inches) :... : . ,:

1.500

1.4421

1.439

1.438

1.437

1.437

1.437

1.437

1.437

1.437

1.437

1.437

1.437

1.437

1.437

1.437

Shear Stress(psf)

0

0

515

618

721

790

893

962

1030

1099

1134

1151

1099

996

996

962


DIRECT SHEAR DATA


Sample Data







Test Data



Strain Kate: 0.022 in/min


Shear Displacement(inches x 103 • :

0

0

10

20

30

40

50

60

70

80

90

100

150

200

250

300

Sample HeightV; : (inches)

1.500

1.337'

1.335

1.335

1.333

1.332

1.331

1.331

1.330

1.330

1.330

1.330

1.330

1.330

1.329

1.329

Shear Stress

(P&

0

0

773

962

1099

1202

1340

1443

1546

1614

1649

1683

1683

1614

1546

1546


DIRECT SHEAR DATA


Sample Data


Description: Brown fine sand/blue-grey fine silt

Initial Moisture Com em: 13.1%



Final Moisture Content: 35.49c

Test Data



Strain Rate: 0.022 inymin


Shear Displacement •(inches x 103 ',.'"' ' •- - •

0

0

10

20

30

40

50

60

70

80

90

100

150

200

250

300

-^fff Sample' Height "" "-•" -; .' ":' •••-'••"?'. /-^"(inches) "'.;; :''.""'. '"

1.500

1.425'

1.422

1.420

1.419

1.418

1.418

1.418

1.417

1.417

1.417

1.417

1.417

1.416

1.416

1.415

••;" : •'"'.".' ... Shear Stress .. : •• . ;... . - : . - : : : : ; . : ; (PS/) : " . . ' • ' :

0

0

275

344

378

429

481

498

550

584

584

567

618

653

687

859


DIRECT SHEAR DATA


Sample Data

Project: Mesa De Oro Sample No. B4 17.5 B

Description: Brown fine sand/blue-grey fine silt Initial Dry Density: 70 pcf


Test Data



: Shear Displacement ' '"'"'"' :] :(inches x Kf3 ......;

0

0

10

20

30

40

50

60

70

80

90

100

150

200

250

300

: ;;A Sample Height

1.500

1.442'

1.439

1.437

1.436

1.435

1.434

1.433

1.433

1.433

1.433

1.433

1.433

1.433

1.432

1.432

Shear Stress/nrf\\P*Jt ":•'

0

0

378

515

584

687

721

773

824

842

893

927

996

1030

996

1030


DIRECT SHEAR DATA


Sample Da La


Description: Brown Fine sand/blue-grey fine silt Initial Dry Density: 76 pcf


Test Data



Shear Displacement •:(inches x 1ft3 • •"".'•[-,

0

0

10

20

30

40

50

60

70

80

90

100

150

200

250

300

".' \!^ Sample Height; ^(inches)

1.500

1.402'

1.399

1.396

1.394

1.393

1.391

1.390

1.389

1.389

1.388

1.388

1.387

1.386

1.386

1.386

:: : . Shear Stress•••;.:•::>..••. (psf) • • • ....

0

0

618

790

910

1030

1134

1202

1305

1340

1374

1443

1614

1683

1786

1752


DIRECT SHEAR DATA


Sample Data

Projea: Mesa De Oro Sample No. B4 20.0 A

Description: Blue-grey fine sill w/fine sand Initial Dry Density: 84 pcf


Test Data


Test Condition: Submerged Nonnal Stress: 600 psf

Shear Displacement(indies x 1Q3 ; /

0

0

10

20

30

40

50

60

70

80

90

100

150

200

250

300

Sample Height: ••:':'|::.:'::v::.;'i (Inches)

1.500

1.4631

1.462

1.461

1.461

1.461

1.461

1.461

1.461

1.461

1.461

1.461

1.461

1.461

1.461

1.461

Shear Stress ; ;;

V. ^;--.-^ ;.,••. :..,:,:,:,:,:•;,,.

0

0

309

412

481

515

550

550

550

550

550

550

550

550

532

515


DIRECT SHEAR DATA


Sample Data



Initial Moisture Content: %


Initial Dry Density: pel

Final Moisture Content: %

Test Data





Shear Displacement-. (inches x ""

Height(inches) '•

10

20 o30 ,r°\ '•&40

50

60

70

80

90

100

150

200

250

300

DIRECT SHEAR DATA


Sample Data

Project: Mesa De Oro So/rip/e No. B4 20.0 C

Description: Blue-grey fine silt w/fine sand 7;i;V/a/ Dry Density: 88 pcf

Initial Moisture Content: 33.0% Moisture Content: 32. 1 %

Test Data


Tkrr Condition: Submerged Normal Stress: 2075 psf

iiv Shear Displacement . - . - • .'"...•": : • (inches x 103 ! :

0

0

10

20

30

40

50

60

70

80

90

100

150

200

250

300

: : ~ . ^ Sample Height ' "<•• ••. '• . . . ' .- . '•- - . . . :;; • (inches) Z: :.:' ".. . :' ::

1.500

1.437'

1.436

1.435

1.434

1.433

1.432

1.432

1.432

1.431

1.431

1.431

1.431

1.431

1.431

1.430

: Shear Stress"•™W. ; (psf) : :

0

0

721

996

1134

1271

1374

1443

1477

1546

1580

1597

1563

1546

1511

1477


DIRECT SHEAR DATA


Sample Data







Test Data





Shear Displacement : • • ..;,;' • • • ' • • - ' • (inches x Iff* --^ M-

0

0

10

20

30

40

50

60

70

80

90

100

150

200

250

300

. . . . . . , : ;.;•-- . . • . • ' , • _. ' ; .- • *

^•Sample Height" v: ^(inches)

1.500

1.3231

1.322

1.321

1.320

1.319

1.318

1.317

1.317

1.316

1.316

1.316

1.316

1.316

1.316

1.316

Shear Stress: - . , : • > - - , . • (psj)

0

0

206

275

309

344

361

412

429

447

481

481

515

515

481

584


DIRECT SHEAR DATA


Sample Data







Test Data



Strain Rale: 0.022 in/min


Shear Displacement v. .;:::. -; (inches x 103 '-"^'--"^

0

0

10

20

30

40

50

60

70

80

90

100

150

200

250

300

•••••••'.'Wâmpie' Height''''.'' '•"';:-:'; ':'X:.y (inches)

1.500

1.371'

1.369

1.367

1.365

1.364

1.363

1.361

1.361

1.360

1.359

1.359

1.358

1.358

1.358

1.358

'': ';:--":": Shear Stress : -: \'. . . . . . . ,..;:,;..,,,,(^/).,,..,. . . . .

0

0

412

481

515

550

618

653

653

687

687

704

721

756

721

687


DIRECT SHEAR DATA


Sample Data


Description: Blue-grey fine silt w/fine sand Initial Dry Density: 73 pcf

Initial Moisture Content: 46. 1 % Final Moisture Content: 43.2%

Test Data



' - • ' f r i " " 1 " Yw^V^'' :::;-:-:v'^:-^";

• ••-.:' (inches* 1'Oî:-'^^

0

0

10

20

30

40

50

60

70

80

90

100

150

200

250

300

. . . . . . . . . . sample aeigni . ..''•'-'''±.Â':W (inches) :•••..'•'••• .

1.500

1.4221

1.421

1.420

1.419

1.418

1.417

1.416

1.416

1.415

1.415

1.414

1.414

1.414

1.414

1.414

: Shear Stress-• -.;-::-:--: tiw;:::-^-': .

0

0

687

859

1030

1168

1271

1408

1460

1546

1614

1683

1924

1821

1786

1752


DIRECT SHEAR DATA

Date post:	02-Dec-2021
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Mesa de Oro Raney geotechnical direct shear data

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