total depth: 15.60 m, date: 04/11/2016 project: fa.ta ... · cpet-it v.1.7.6.42 - cptu data...

Project: FA.TA. RICAMBI S.P.A.

GEOTEA S.R.L.

Via della Tecnica 57/A4

40068 - San Lazzaro di Savena (BO)

+39.051.6255377Total depth: 15.60 m, Date: 04/11/2016

VALSAMOGGIA (BO) - CRESPELLANO - LOC. CHIESACCIA

Cone Type: Tecnopenta

Cone Operator: ZANNA - CINTI

CPT: 16.228_CPTU1

Location:

CPeT-IT v.1.7.6.42 - CPTU data presentation & interpretation software - Report created on: 05/12/2016, 11.51.03 0Project file: \\Server\server\GEOTEA\LAVORI\2016\16.228_FA.TA. RICAMBI S.P.A\Prove in sito\CPT\16.228_CPTU.cpt


GEOTEA S.R.L.







CPT: 16.228_CPTU1

Location:



GEOTEA S.R.L.Via della Tecnica 57/A440068 - San Lazzaro di Savena (BO)+39.051.6255377 Total depth: 15.60 m, Date: 04/11/2016

VALSAMOGGIA (BO) - CRESPELLANO - LOC. CHIESACCIACone Type: Tecnopenta


CPT: 16.228_CPTU1

Location:

CPTUBorehole

Depth(m) (t50)0.50 t50

(s)t50

(years) G/Such

(m2/s)ch

(m2/year)

T a b u l a r r e s u l t s

Dissipation Tests Results

Dissipation tests consists of stopping the piezocone penetration and observing porepressures (u) with elapsed time (t).The data are automatic recorded by the field computer and should take place until a minimum of 50% dissipation. The porepressures are plotted as a function of square root of (t). The graphical technique suggested by Robertson andCampanella (1989), yields a value for t50, which corresponds to the time for 50% consolidation. The value of the coefficient of consolidation in the radial or horizontal direction ch was then calculated by Houlsby andTeh's (1988) theory using the following equation:

50

5.0r

2

h tIrT

c

where: T: time factor given by Houlsby and Teh's (1988) theory corresponding to the porepressure positionr: piezocone radiusIr: stiffness index, equal to shear modulus G divided by the undrained strength of clay (Su).t50: time corresponding to 50% consolidation

Dissipation tests

Permeability estimates based on dissipation testThe dissipation of pore pressures during a CPTu dissipation test is controlled by the coefficient of consolidation in thehorizontal direction (ch) which is influenced by a combination of the soil permeability (kh) and compressibility (M), asdefined by the following:

/Mγck whh

where: M is the 1-D constrained modulus and γw is the unit weight of water, in compatible units.

M(MPa)

kh

(m/s)

16.228_CPTU1 3.00 20.3 412 1.31E-005 100.00 1.88E-006 59 5.45 3.39E-009

This software is licensed to: GEOTEA S.R.L. CPT name: 16.228_CPTU1

Piezocone Dissipation Test: 16.228_CPTU1Depth: 3.00 (m)

t^0.50 (s^0.50)302826242220181614121086420

Pore

pres

sure

u2

(kPa

)

150

145

140

135

130

125

120

115

110

105

100

95

90

85

80

75

70

65

60

55

5020.294


u0 = 11.77 (kPa)

u initial dissipation

assumed initial pore pressure, ui

Pore pressure

Legend

u2 penetrationInitial dissipationEnd of dissipation (extrapolated)Initial estimated at t=0

Pressure (kPa)200150100500

Depth

(m

)15 .5

15

14.5

14

13.5

13

12.5

12

11.5

11

10.5

10

9.5

9

8.5

8

7.5

7

6.5

6

5.5

5

4.5

4

3.5

3

2.5

2

1.5

1

0.5

0Pore pressure


GEOTEA S.R.L.







CPT: 16.228_CPTU2

Location:



GEOTEA S.R.L.






Cone Operator: Zanna - Cinti

CPT: 16.228_CPTU3

Location:



GEOTEA S.R.L.







CPT: 16.228_CPTU3

Location:






CPT: 16.228_CPTU3

Location:

CPTUBorehole

Depth(m) (t50)0.50 t50

(s)t50

(years) G/Such

(m2/s)ch

(m2/year)

T a b u l a r r e s u l t s

Dissipation Tests Results

Dissipation tests consists of stopping the piezocone penetration and observing porepressures (u) with elapsed time (t).The data are automatic recorded by the field computer and should take place until a minimum of 50% dissipation. The porepressures are plotted as a function of square root of (t). The graphical technique suggested by Robertson andCampanella (1989), yields a value for t50, which corresponds to the time for 50% consolidation. The value of the coefficient of consolidation in the radial or horizontal direction ch was then calculated by Houlsby andTeh's (1988) theory using the following equation:

50

5.0r

2

h tIrT

c

where: T: time factor given by Houlsby and Teh's (1988) theory corresponding to the porepressure positionr: piezocone radiusIr: stiffness index, equal to shear modulus G divided by the undrained strength of clay (Su).t50: time corresponding to 50% consolidation

Dissipation tests

Permeability estimates based on dissipation testThe dissipation of pore pressures during a CPTu dissipation test is controlled by the coefficient of consolidation in thehorizontal direction (ch) which is influenced by a combination of the soil permeability (kh) and compressibility (M), asdefined by the following:

/Mγck whh

where: M is the 1-D constrained modulus and γw is the unit weight of water, in compatible units.

M(MPa)

kh

(m/s)

16.228_CPTU3 6.50 11.4 129 4.09E-006 345.18 1.12E-005 353 18.92 5.80E-009

This software is licensed to: GEOTEA S.R.L. CPT name: 16.228_CPTU3


t^0.50 (s^0.50)302826242220181614121086420

Pore

pres

sure

u2

(kPa

)

150

145

140

135

130

125

120

115

110

105

100

95

90

85

80

75

70

65

60

55

50

45

40

35

30

25

2011.354


u0 = 36.22 (kPa)

u initial dissipation

assumed initial pore pressure, ui

Pore pressure

Legend

u2 penetrationInitial dissipationEnd of dissipation (extrapolated)Initial estimated at t=0

Pressure (kPa)200150100500

Depth

(m

)15

14 .5

14

13.5

13

12.5

12

11.5

11

10.5

10

9.5

9

8.5

8

7.5

7

6.5

6

5.5

5

4.5

4

3.5

3

2.5

2

1.5

1

0.5

0Pore pressure





CPT: 16.228_CPTU1

Location:

Tip resistance (MPa)21.510.5

15.5

15

14.5

14

13.5

13

12.5

12

11.5

11

10.5

10

9.5

9

8.5

8

7.5

7

6.5

6

5.5

5

4.5

4

3.5

3

2.5

2

1.5

1

0.5

0

Ic4321

Depth (m) Elev ation: 0.00 (m)

0.66 C lay & silty clay 1.3 5.19E-7 4.7 23.5 - - 18.1 26.0 92.2 4.3 32.5 17.4

1.28 C lay 1.7 7.11E-8 6.8 30.8 - - 22.8 43.0 101.7 3.7 24.5 18.5

2.18 C lay & silty clay 1.7 1.09E-7 6.9 30.9 - - 22.1 41.6 109.8 2.1 13.7 17.7

7.28 C lay 1.1 2.14E-8 5.3 - - - 13.1 33.9 74.1 0.9 5.6 16.87.60 C lay & silty clay 1.0 2.40E-8 4.8 - - - 10.1 28.5 72.6 0.8 5.2 16.1

8.28 C lay 1.0 9.42E-9 5.1 - - - 8.8 32.9 63.4 0.7 3.9 16.5

10.08 C lay & silty clay 1.0 1.83E-8 4.9 - - - 7.6 28.6 71.9 0.6 4.1 15.910.48 C lay 1.3 5.79E-9 6.8 - - - 10.4 45.8 74.7 0.7 3.4 17.1

qt (MPa) Ksbt (m/s) N60 Es (MPa) Dr Phi (°) M (MPa) Go (MPa) Su (kPa) Su ratio O C R Gamma(kN/m³)

Description

1.80

CPeT-IT v.1.7.6.42 - CPTU data presentation & interpretation software - Report created on: 05/12/2016, 11.56.00Project file: \\Server\server\GEOTEA\LAVORI\2016\16.228_FA.TA. RICAMBI S.P.A\Prove in sito\CPT\16.228_CPTU.cpt





CPT: 16.228_CPTU1

Location:

From depthTo depth

(m)

Thickness(m)

Permeability(m/s)

SPTN60

(blows/30cm)Es

(MPa)Dr Friction

angleConstrainedmodulus, M

(MPa)

Shearmodulus, GO

(MPa)

Undrainedstrength, SU

(kPa)

Undrainedstrength

ratio

OCR Unit weight(kN/m³)

Summary table of mean values

0.66

1.280.62

5.19E-07 4.7 0.023.5 0.0 18.1 26.0 92.2 4.3 32.5 17.4

(±5.03E-07) (±1.0) (±3.8) (±0.0) (±0.0) (±2.7) (±6.9) (±6.7) (±0.2) (±1.7) (±0.7)

1.28

2.180.90

7.11E-08 6.8 0.030.8 0.0 22.8 43.0 101.7 3.7 24.5 18.5

(±1.97E-08) (±0.4) (±0.4) (±0.0) (±0.0) (±1.4) (±1.9) (±6.5) (±0.5) (±4.2) (±0.1)

2.18

7.285.10

1.09E-07 6.9 0.030.9 0.0 22.1 41.6 109.8 2.1 13.7 17.7

(±1.44E-07) (±1.2) (±6.7) (±0.0) (±0.0) (±4.5) (±7.9) (±20.3) (±0.7) (±4.8) (±0.7)

7.28

7.600.32

2.14E-08 5.3 0.00.0 0.0 13.1 33.9 74.1 0.9 5.6 16.8

(±1.62E-08) (±0.5) (±0.0) (±0.0) (±0.0) (±1.9) (±2.8) (±11.4) (±0.1) (±1.0) (±0.3)

7.60

8.280.68

2.40E-08 4.8 0.00.0 0.0 10.1 28.5 72.6 0.8 5.2 16.1

(±6.46E-09) (±0.4) (±0.0) (±0.0) (±0.0) (±1.4) (±1.4) (±5.7) (±0.1) (±0.5) (±0.2)

8.28

10.081.80

9.42E-09 5.1 0.00.0 0.0 8.8 32.9 63.4 0.7 3.9 16.5

(±4.97E-09) (±0.6) (±0.0) (±0.0) (±0.0) (±3.0) (±4.5) (±9.1) (±0.1) (±0.8) (±0.5)

10.08

10.480.40

1.83E-08 4.9 0.00.0 0.0 7.6 28.6 71.9 0.6 4.1 15.9

(±9.78E-09) (±0.3) (±0.0) (±0.0) (±0.0) (±1.6) (±1.5) (±9.9) (±0.1) (±0.7) (±0.2)

10.48

15.605.12

5.79E-09 6.8 0.00.0 0.0 10.4 45.8 74.7 0.7 3.4 17.1

(±3.73E-09) (±1.7) (±0.0) (±0.0) (±0.0) (±5.1) (±13.4) (±16.1) (±0.1) (±0.7) (±0.8)

Depth values presented in this table are measured from free ground surface






CPT: 16.228_CPTU2

Location:

Tip resistance (MPa)2.521.510.5

15

14.5

14

13.5

13

12.5

12

11.5

11

10.5

10

9.5

9

8.5

8

7.5

7

6.5

6

5.5

5

4.5

4

3.5

3

2.5

2

1.5

1

0.5

0

Ic4321


0.78 C lay & silty clay 1.4 1.42E-7 5.5 24.1 - - 19.1 34.3 89.5 3.6 24.1 18.0

1.72 C lay 1.0 5.09E-8 4.5 19.9 - - 13.6 28.8 65.4 1.9 11.5 17.2

2.36 C lay & silty clay 1.6 7.68E-8 6.6 28.6 - - 21.5 41.8 101.9 2.5 16.1 18.0

3.18 C lay 1.6 4.28E-8 6.8 32.4 - - 20.8 43.9 98.5 2.0 12.6 18.0

4.66 C lay & silty clay 1.7 4.78E-8 7.2 - - - 22.1 44.9 108.5 1.9 11.9 17.95.06 C lay 1.6 3.28E-8 7.0 - - - 20.5 45.2 99.1 1.7 10.1 17.95.46 C lay & silty clay 1.4 7.94E-8 5.8 30.0 - - 18.0 35.8 91.8 1.3 8.2 17.0

6.64 C lay 0.9 9.48E-9 5.0 27.6 - - 8.4 32.6 58.2 0.7 3.8 16.6

9.68 C lay & silty clay 1.3 1.01E-7 5.9 37.0 - - 12.9 33.9 71.8 0.7 4.1 16.4

10.52 C lay 1.2 2.80E-9 6.7 - - - 8.3 46.9 62.4 0.6 2.7 17.3


Description

1.80






CPT: 16.228_CPTU2

Location:

From depthTo depth

(m)

Thickness(m)

Permeability(m/s)

SPTN60

(blows/30cm)Es

(MPa)Dr Friction


(MPa)

Shearmodulus, GO

(MPa)


(kPa)

Undrainedstrength

ratio



0.78

1.720.94

1.42E-07 5.5 0.024.1 0.0 19.1 34.3 89.5 3.6 24.1 18.0

(±1.36E-07) (±0.8) (±2.2) (±0.0) (±0.0) (±1.9) (±6.6) (±4.6) (±0.4) (±4.2) (±0.5)

1.72

2.360.64

5.09E-08 4.5 0.019.9 0.0 13.6 28.8 65.4 1.9 11.5 17.2

(±5.35E-08) (±0.6) (±0.9) (±0.0) (±0.0) (±2.0) (±5.1) (±8.7) (±0.3) (±1.8) (±0.6)

2.36

3.180.82

7.68E-08 6.6 0.028.6 0.0 21.5 41.8 101.9 2.5 16.1 18.0

(±6.43E-08) (±0.5) (±1.7) (±0.0) (±0.0) (±1.7) (±4.7) (±10.4) (±0.2) (±1.8) (±0.4)

3.18

4.661.48

4.28E-08 6.8 0.032.4 0.0 20.8 43.9 98.5 2.0 12.6 18.0

(±2.52E-08) (±0.6) (±32.4) (±0.0) (±0.0) (±2.0) (±3.7) (±12.7) (±0.2) (±1.6) (±0.2)

4.66

5.060.40

4.78E-08 7.2 0.00.0 0.0 22.1 44.9 108.5 1.9 11.9 17.9

(±1.26E-08) (±0.4) (±0.0) (±0.0) (±0.0) (±0.9) (±2.3) (±6.2) (±0.1) (±0.8) (±0.1)

5.06

5.460.40

3.28E-08 7.0 0.00.0 0.0 20.5 45.2 99.1 1.7 10.1 17.9

(±1.61E-08) (±0.0) (±0.0) (±0.0) (±0.0) (±1.1) (±2.0) (±9.6) (±0.1) (±1.0) (±0.2)

5.46

6.641.18

7.94E-08 5.8 0.030.0 0.0 18.0 35.8 91.8 1.3 8.2 17.0

(±8.77E-08) (±0.8) (±1.5) (±0.0) (±0.0) (±3.8) (±3.7) (±19.4) (±0.2) (±1.9) (±0.4)

6.64

9.683.04

9.48E-09 5.0 0.027.6 0.0 8.4 32.6 58.2 0.7 3.8 16.6

(±1.45E-08) (±0.6) (±0.6) (±0.0) (±0.0) (±3.7) (±4.0) (±13.5) (±0.2) (±1.4) (±0.5)

9.68

10.520.84

1.01E-07 5.9 0.037.0 0.0 12.9 33.9 71.8 0.7 4.1 16.4

(±2.04E-07) (±1.6) (±37.0) (±0.0) (±0.0) (±10.6) (±6.2) (±30.5) (±0.2) (±2.2) (±0.4)

10.52

15.484.96

2.80E-09 6.7 0.00.0 0.0 8.3 46.9 62.4 0.6 2.7 17.3

(±4.36E-09) (±1.7) (±0.0) (±0.0) (±0.0) (±5.6) (±12.7) (±21.1) (±0.2) (±1.0) (±0.7)







CPT: 16.228_CPTU3

Location:

Tip resistance (MPa)2.521.510.5

15

14.5

14

13.5

13

12.5

12

11.5

11

10.5

10

9.5

9

8.5

8

7.5

7

6.5

6

5.5

5

4.5

4

3.5

3

2.5

2

1.5

1

0.5

0

Ic4321


0.66 C lay & silty clay 1.4 1.70E-7 5.4 25.6 - - 18.6 31.9 97.8 3.7 17.0 17.8

2.34 Silty sand & sandy silt 1.5 4.04E-7 5.2 22.0 32.4 34.8 20.1 27.8 - - - 16.92.70 C lay & silty clay 1.6 1.03E-7 6.6 33.1 - - 20.0 38.4 101.9 1.6 7.3 17.1

12.62 C lay 1.7 1.03E-8 8.6 - - - 18.1 55.4 103.8 0.9 4.2 17.7


Description

1.30






CPT: 16.228_CPTU3

Location:

From depthTo depth

(m)

Thickness(m)

Permeability(m/s)

SPTN60

(blows/30cm)Es

(MPa)Dr Friction


(MPa)

Shearmodulus, GO

(MPa)


(kPa)

Undrainedstrength

ratio



0.66

2.341.68

1.70E-07 5.4 0.025.6 0.0 18.6 31.9 97.8 3.7 17.0 17.8

(±1.77E-07) (±1.2) (±5.3) (±0.0) (±0.0) (±3.8) (±7.7) (±17.5) (±0.7) (±3.4) (±0.7)

2.34

2.700.36

4.04E-07 5.2 32.422.0 34.8 20.1 27.8 0.0 0.0 0.0 16.9

(±1.34E-07) (±0.4) (±1.2) (±0.8) (±0.2) (±1.2) (±1.4) (±0.0) (±0.0) (±0.0) (±0.2)

2.70

12.629.92

1.03E-07 6.6 0.033.1 0.0 20.0 38.4 101.9 1.6 7.3 17.1

(±1.08E-07) (±1.0) (±3.7) (±0.0) (±0.0) (±5.5) (±5.3) (±23.5) (±0.8) (±3.8) (±0.6)

12.62

15.202.58

1.03E-08 8.6 0.00.0 0.0 18.1 55.4 103.8 0.9 4.2 17.7

(±6.56E-09) (±1.2) (±0.0) (±0.0) (±0.0) (±5.8) (±8.6) (±21.3) (±0.2) (±0.8) (±0.4)



total depth: 15.60 m, date: 04/11/2016 project: fa.ta ... · cpet-it v.1.7.6.42 - cptu data...

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