Structural Feasibility Report-prison

Consultancy Agreement No. 9AY013

Term Consultancy for Minor Works to Government Properties for which the

Architectural Services Department (Property Services Branch) is Responsible in Region No.1

Refurbishment of Security Fencing at Tung Tau Correctional Institute

Structural Feasibility Report

Prepared by: Crimson Lau 17 January 2015


Refurbishment of Security Fencing (Project ID: P1000708)

TABLE OF CONTENT

1.0 Introduction

2.0 Site Appraisal

3.0 Scope of Structural Works

4.0 Information Available for Structural Adequacy Assessment

5.0 Discussion and Recommendation

6.0 Conclusion

APPENDIX

Appendix A - Panoramas for Refurbishment of Security Fencing

Appendix B - G.I. Report







1.0 Introduction

The Architectural Services Department (ASD) has appointed Andrew Lee King Fun &

Associates Limited (ALKF) as lead consultant to conduct the refurbishment of existing security

fencing at Tung Tau Correctional Institute.

2.0 Site Appraisal

Two site visits were conducted on 11th

December 2012 and 9th

May 2013 separately. During the

site visits, it is observed that some corrosion of existing fencings and deterioration of

corresponding footings are found. Some of the fencings are erected on top of retaining walls at

slope toe level while others supported by footings on the slope. Obviously, the defective

fencings and footings need to be replaced in accordance with the standard details as per

Correctional Services Department (CSD). The site visit photos including panoramas are

attached in Appendix A for reference.

As requested by the client, some of the perimeter fencing within defective posts should also be

replaced or refurbished by the two types of required fences. Layout, elevations, and replacement

schedules for both steel posts and security meshes are available from latest GBPs.

3.0 Scope of Structural Works

As advised by the Architect, the proposed refurbishment works include replacement of existing

perimeter steel posts, footings and security meshes where necessary. Based on the available

information, the scope of structural works included are as follows:

• Ground Investigation works including vertical drill holes to verify the geotechnical condition

of the site to be carried out and trial pits to verify the existing retaining walls and utility at

proposed fencings. (For G.I. report, please refer to Appendix B)

• Conduct conditional survey to the existing structure before and after the completion of all

works;

• Carry out structural investigation on existing footings prior to the replacement of fencing

• Provide structural drawing for the proposed security fencing in accordance with the standard

details as approved by CSD

• Provide structural drawing for new footing and the connection details of the proposed

fencing as required.

4.0 Information Available for Structural Adequacy Assessment

No record plans of the existing structure were obtained from ASD. Also, foundation plan and

structural design information cannot be retrieved and hence it is recommended that structural

investigation should be conducted in order to obtain adequate structural information for

assessment and further detail design.







Drawing No. Drawing Title

Nil Nil

5.0 Discussion and Recommendation

Design Requirements

During the site visit, the clients requested to carry out the upgrading of the existing security

fencing to the latest standard in accordance with Correction Services Department (CSD)

requirement.

Increased Design Wind Load in Line with Current Wind Code

According to the topographic survey plan from architect, the local topography is considered

significant at the proposed site location according to current wide code which may result in

larger new footing size than the existing one and an increase in pressure input when checking

stability of the slope.

Drill in Systems for Fencings on Retaining Walls

If retaining walls are present as the supports for the refurbished/replaced fencings, a system of

drill in bars with Hilti Re-500 adhesive should be provided together with a layer of 50mm THK

cement to make good the rough surface.

Further Considerations

The major concerns of this project are the restricted clear spacing for the proposed footing

adjacent to the slope and the stability of slope at the proposed site. As the topography of the

adjacent slope is varied, further geotechnical assessment of the adjacent slope might be required.

The slope stability should be examined prior to the construction of footing to avoid the adverse

effect on the stability of slope. If it gives a dissatisfactory result, then strengthening works for

the existing slope should be carried out correspondingly.

No working tools, construction material or construction debris is allowed to stockpile inside the

prison without consent from CSD & the Architect. Construction debris should be stockpiled at

approved area and remove off site daily.

Although bearing capacity w/o wind is assumed to be 100kpa according to G.I. report, plate load

test may still be required to verify the actual magnitude subject to ASD’s considerations or any

changes in detail design stage.

6.0 Conclusion

Based on the abovementioned, it can be concluded that the proposed replaced fencing is feasible

when the slope stability is satisfactory (strengthening works may be required if necessary), and

sufficient working space can be provided.







Appendix A - Panoramas for Refurbishment of Security Fencing







Appendix B - G.I. Report

T2-101

T2-101

T2-101

90

69

95

0.30

2.00

6.00

10.00

+27.90

+27.20

+26.20

+25.10

+22.60

+22.20

+19.10

0.30

1.00

2.00

3.10

5.60

6.00

9.10

0

+18.20

Grey, angular COBBLE sized rock and concretefragments. (FILL)

Wash boring.

Dark greyish brown, angular COBBLE sized rock andconcrete fragments. (FILL)

Soft, greyish brown, sandy SILT with occasional finegravel sized rock fragments. (FILL)

Extremely weak, brownish pink mottled with black,completely decomposed medium grained GRANITE.(Very dense, silty medium to coarse SAND with somefine gravel sized rock fragments)

Moderately weak to moderately strong, brownish pinkmottled with black, highly to moderately decomposedmedium grained GRANITE.

Extremely weak to very weak, dark pinkish brownmottled with black, completely decomposed mediumgrained GRANITE. (Very dense, slightly silty medium tocoarse SAND)

Very weak, greyish pink mottled with black, completelydecomposed coarse grained GRANITE. (VEry dense,silty medium to coarse SAND with some medium tocoarse gravel sized rock fragments)

20

25.9.14

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

(10, 15,17, 13, 15,15)N = 60

(12, 13,15, 13, 16,14)N = 58

(13, 13,16, 19, 17,19)N = 71

(18, 21,23, 25, 20,29)N = 97

V

IV/III

V

V

2.00

3.00

3.20

3.50

4.00

5.00

5.20

5.50

6.00

7.00

7.20

7.50

8.00

9.00

9.20

9.50

10.00

0.00

1.00

5.60

3.003.10

3.503.55

5.005.10

5.505.55

7.007.10

7.507.55

9.009.10

9.509.55

>20

100

100

100

100

HX

GEOTECH

ENGINEERING

LIMITED

DRILLHOLE RECORD

Legend

Tests

F.I.

Samples

(m)

Description

start/

Grade

Drilling

R.Q.D.(%)

Progress (m)

Casing size

T.C.R.(%)level

Shift

S.C.R.(%)

Depth

0

1

2

3

4

5

6

7

8

9

10

end

Water

Reduced

Level

Permeability Test

REMARKS

Packer Test

Piezometer TipSPT Liner Sample

In-situ Vane Shear Test

Water Sample

Standard Penetration Test

Piston Sample

U76 Undisturbed Sample

Standpipe Tip

Mazier Sample


Small Disturbed Sample

Impression Packer Test / BHTV

S.Y. Tam

27/09/2014

LOGGED

DATE

W.O. No

DATE:

SHEET

X46-BH 1

RC

21

26/09/2014

WATER

XY2B to

CONTRACT NO.

Tung Tau Correctional Institution Ground Invstigation

GROUND LEVELVERTICAL

MACHINE & No.

FLUSHING MEDIUM ORIENTATION

HOLE NO.

25/09/2014E 840,424.43

N 808,128.05

CO-ORDINATES

mPD

PROJECT

of

METHOD

+28.20

T2-101

T2-101

T2-101

T2-101

T2-101

T2-101

86

88

97

100

98

99

12.62

13.13

14.67

15.52

17.02

18.52

+16.60

+15.57

+13.53

+9.68

11.60

12.63

14.67

18.52

29

88

91

64

87

93

+15.90

+14.00

12.30

14.20

As sheet 1 of 2.

Moderately weak to moderately strong, dark brownishpink mottled with black, moderately decomposedmedium grained GRANITE with closely locally veryclosely spaced, rough undulating, iron and manganesestained joints, dipping at 10°-20° and 30°-40°.From 11.90-12.30m: Highly to moderately decomposedGRANITE.

Strong, pinkish grey to dark brownish pink mottled withblack, slightly decomposed medium grained GRANITEwith closely to medium spaced, rough smooth, verynarrow to narrow, iron and manganese stained joints,dipping at 10°-20° and 30°-40°.

From 13.83-14.20m: Moderately strong and moderatelydecomposed GRANITE.

Moderately strong, dark brownish pink mottled with greyand white, moderately decomposed medium grainedGRANITE with closely to medium spaced, rough planarand undulating, very narrow, iron stained, chloritecoated joints, dipping at 10°-20° and 30°-40°.

End of Investigation hole at 18.52m.

+16.30

+14.37

37

88

91

94

87

93

25.9.14

26.9.14

26.9.14

HX

11.60

7.20m

at

08:00

18

19

20

5.30m

at

18:00

(21, 25,23, 27, 27,25)N = 102

V

III

IV/III

III

II

III

II

III

11.00

11.20

11.50

11.90

13.83

11.60

12.62

13.13

14.67

15.52

17.02

11.0011.10

11.5011.55

13.6

1.7

3.6

3.3

5.3

100

GEOTECH

ENGINEERING

LIMITED

DRILLHOLE RECORD

Legend

Tests

F.I.

Samples

(m)

Description

start/

Grade

Drilling

R.Q.D.(%)

Progress (m)

Casing size

T.C.R.(%)level

Shift

S.C.R.(%)

Depth

10

11

12

13

14

15

16

17

18

19

20

end

Water

Reduced

Level

Permeability Test

REMARKS

Packer Test



Water Sample


Piston Sample


Standpipe Tip

Mazier Sample




S.Y. Tam

27/09/2014

LOGGED

DATE

W.O. No

DATE:

SHEET

X46-BH 1

RC

22

26/09/2014

WATER

XY2B to

CONTRACT NO.



MACHINE & No.


HOLE NO.

25/09/2014E 840,424.43

N 808,128.05

CO-ORDINATES

mPD

PROJECT

of

METHOD

+28.20

I.P.

10.00

+27.90

+23.80

1.00

5.10

+18.90

Medium dense, dark greyish brown, silty medium tocoarse SAND. (FILL)

Extremely weak, dark greyish brown mottled with black,completely decomposed medium grained GRANITE.(Dense to very dense, silty medium to coarse SAND)

Extremely weak to very weak, dark yellowish brownmottled with black, completely decomposed mediumgrained GRANITE. (Very dense, silty medium to coarseSAND with some coarse gravel sized rock fragments)

29.9.14

A

B

C

D

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

(7, 8, 10,12, 14, 12)N = 48

(10, 12,18, 16, 17,18)N = 69

(12, 13,18, 17, 16,20)N = 71

(15, 20,22, 20, 24,24)N = 90

V

V

2.00

3.00

3.20

3.50

4.00

5.00

5.20

5.50

6.00

7.00

7.20

7.50

8.00

9.00

9.20

9.50

10.00

0.50

1.00

1.50

3.003.10

3.503.55

5.005.10

5.505.55

7.007.10

7.507.55

9.009.10

9.509.55

100

100

100

100

HX

GEOTECH

ENGINEERING

LIMITED

DRILLHOLE RECORD

Legend

Tests

F.I.

Samples

(m)

Description

start/

Grade

Drilling

R.Q.D.(%)

Progress (m)

Casing size

T.C.R.(%)level

Shift

S.C.R.(%)

Depth

0

1

2

3

4

5

6

7

8

9

10

end

Water

Reduced

Level

Permeability Test

REMARKS

Packer Test



Water Sample


Piston Sample


1. Prior to drilling an inspection pit was excavated by hand to 2.00m

depth.

2. A standpipe installed to 5.00m depth.

Standpipe Tip

Mazier Sample




S.Y. Tam

02/10/2014

LOGGED

DATE

W.O. No

DATE:

SHEET

X46-BH 2

RC

31

30/09/2014

WATER

XY2B to

CONTRACT NO.



MACHINE & No.


HOLE NO.

29/09/2014E 840,417.79

N 808,127.71

CO-ORDINATES

mPD

PROJECT

of

METHOD

+28.90

T2-101

T2-101

T2-101

T2-101

T2-101

T2-101

T2-101

36

94

88

95

97

103

97

12.50

13.30

14.50

16.00

17.55

19.00

19.93

+17.50

+15.60

+14.40

+9.90

+8.97

11.40

13.30

14.50

19.00

19.93

7

20

50

43

68

73

89

21,27

25,25

29,31/25mm

200/250mm

+14.40

+9.90

14.50

19.00

As sheet 1 of 3.

Moderately weak to moderately strong, dark brownishpink mottled with black, moderately decomposedmedium grained GRANITE, highly fractured.

Moderately strong, dark greyish pink mottled with black,slightly decomposed medium grained GRANITE withclosely to medium spaced, rough smooth, very narrow,iron stained joints, dipping at 10°-20° and 20°-30°.From 13.85-14.50m: Weak and highly decomposedGRANITE, fractured.

Moderately strong, brownish pink mottled with black,moderately decomposed medium grained GRANITEwith closely to medium spaced, rough smooth andplanar, very narrow to narrow, iron and manganesestained, kaolin coated joints.

From 18.60-19.00m: Strong and slightly decomposedGRANITE.

Strong, dark greyish pink mottled with black, slightlydecomposed medium grained GRANITE with closely tomedium spaced, rough smooth, very narrow, ironstained, kaolin coated joints, dipping at 10°-20° and30°-40°.

+15.05

+10.30

7

38

57

87

90

95

89

29.9.14

30.9.14

30.9.14

HX

11.40

18

19

20

V

III

II

IV

III

II

II

11.0011.10

11.35

13.85

18.60

12.50

13.30

14.50

16.00

17.55

19.00

11.0011.10

11.3511.40

>20

4.2

NI

5.3

5.7

3.8

100

GEOTECH

ENGINEERING

LIMITED

DRILLHOLE RECORD

Legend

Tests

F.I.

Samples

(m)

Description

start/

Grade

Drilling

R.Q.D.(%)

Progress (m)

Casing size

T.C.R.(%)level

Shift

S.C.R.(%)

Depth

10

11

12

13

14

15

16

17

18

19

20

end

Water

Reduced

Level

Permeability Test

REMARKS

Packer Test



Water Sample


Piston Sample


Standpipe Tip

Mazier Sample




S.Y. Tam

02/10/2014

LOGGED

DATE

W.O. No

DATE:

SHEET

X46-BH 2

RC

32

30/09/2014

WATER

XY2B to

CONTRACT NO.



MACHINE & No.


HOLE NO.

29/09/2014E 840,417.79

N 808,127.71

CO-ORDINATES

mPD

PROJECT

of

METHOD

+28.90

End of Investigation hole at 19.93m.

GEOTECH

ENGINEERING

LIMITED

DRILLHOLE RECORD

Legend

Tests

F.I.

Samples

(m)

Description

start/

Grade

Drilling

R.Q.D.(%)

Progress (m)

Casing size

T.C.R.(%)level

Shift

S.C.R.(%)

Depth

20

21

22

23

24

25

26

27

28

29

30

end

Water

Reduced

Level

Permeability Test

REMARKS

Packer Test



Water Sample


Piston Sample


Standpipe Tip

Mazier Sample




S.Y. Tam

02/10/2014

LOGGED

DATE

W.O. No

DATE:

SHEET

X46-BH 2

RC

33

30/09/2014

WATER

XY2B to

CONTRACT NO.



MACHINE & No.


HOLE NO.

29/09/2014E 840,417.79

N 808,127.71

CO-ORDINATES

mPD

PROJECT

of

METHOD

+28.90

0.15

1.70

0.15

1.70

CONCRETE.

Medium dense, brownish grey, silty medium to coarse SAND with someboulder sized rock fragments. (FILL)

(A) Moderately strong, pinkish brown mottled with black, moderatelydecomposed medium grained GRANITE.

Face A : m

GEOTECH

ENGINEERING

LIMITED

C

DATE : 30/09/2014

S.Y. TamPREPARED BY :

D B

1.50m

D B

A

D B

AA1.50m1.50m

1.50m

1.50m

Boulders

DRAINAGE

Fence

Fence

B

Sketch

30/09/2014

PLAN

Seepage

Description

EXCAVATION DATE :

Undisturbed Sample Hori. ( )

Large Disturbed Sample

Undisturbed Sample Vert. ( )

Block Sample

0

1

2

3

4

5

Face B : m 1.50

TR

IAL

PIT

NO

.

30/09/2014



(m) (Face )

E

SYMBOL

TR

IAL

PIT

RE

CO

RD

Face D : m

0

1

2

3

4

5

BACKFILL DATE :

m.P.D.

Samples

& Tests

Depth

CO-ORDINATES :

X4

6-T

P 1

Face C : m

28/09/2014 30/09/2014

Insitu Density Test

Water Sample

Schmidt Hammer Test

GROUND LEVEL :

toWORKS ORDER NO. :

1.50

SECTION (NOT TO SCALE)

Weathering

N

Depth

REMARKS

(m)

Legend

Face A : m D

to

PROJECT :

CONTRACT NO. :

1.50

X46-TP 1

1.50 Grade

+24.20840,411.33

808,145.13

TRIAL PIT NO. :

(A)

BOULDERSBOULDERSDrainage

CONCRETE

1.50m

0.40m

0.40m D

0.00m

0.60m

1.70m

Boulders

Drainage

0.15

0.40

0.90

0.15

0.40

0.90

V

Brownish grey, subangular COBBLE of slightly decomposed granite withcement sand pointing. (MASONRY SURFACE)

Medium dense, brownish grey silty medium to coarse SAND with occasionalgravel sized rock fragments. (FILL)

Extremely weak, pinkish brown mottled with black, completely decomposedmedium grained GRANITE. (Firm, silty medium to coarse SAND)

Face A : m

GEOTECH

ENGINEERING

LIMITED

C

A

Grade IIIGRANITE

32°MASONRY

SURFACE

DATE : 30/09/2014


DMASONRY

SURFACE

FILL

FILLGrade V

GRANITE

A

C

0.90m

Sketch

30/09/2014

PLAN

Seepage

Description

EXCAVATION DATE :




Block Sample

0

1

2

3

4

5

Face B : m 1.50

TR

IAL

PIT

NO

.

30/09/2014



(m) (Face )

E

SYMBOL

TR

IAL

PIT

RE

CO

RD

Face D : m

0

1

2

3

4

5

BACKFILL DATE :

m.P.D.

Samples

& Tests

Depth

CO-ORDINATES :

X4

6-T

P 2

Face C : m

29/09/2014 30/09/2014

Insitu Density Test

Water Sample

Schmidt Hammer Test

GROUND LEVEL :

toWORKS ORDER NO. :

1.50


Weathering

N

Depth

REMARKS

(m)

Legend

Face A : m D

to

PROJECT :

CONTRACT NO. :

1.50

X46-TP 2

1.50 Grade

+29.50840,417.72

808,125.48

TRIAL PIT NO. :

32°

D

1.50m

1.50m

D

1.50m1.50m1.50m

1.50m

BBB

0.15

0.40

3.00

0.15

0.40

3.00

MASONRY SURFACE.

CONCRETE.

Medium dense, greyish brown, silty medium to coarse SAND with occasionalgravel sized rock fragments. (FILL)

Face A : m

GEOTECH

ENGINEERING

LIMITEDDATE :

FILL

MASONRY

SURFACE

FILL

FILL

18/09/2014


MASONRY

SURFACE

A

C

CONCRETE

CONCRETE

36°

0.90m

0.15m

0.00m

3.00m

Sketch

30/09/2014

PLAN

Seepage

Description

EXCAVATION DATE :




Block Sample

0

1

2

3

4

5

Face B : m 1.50

TR

IAL

PIT

NO

.

30/09/2014



(m) (Face )

E

SYMBOL

TR

IAL

PIT

RE

CO

RD

Face D : m

0

1

2

3

4

5

BACKFILL DATE :

m.P.D.

Samples

& Tests

Depth

CO-ORDINATES :

X4

6-T

P 3

Face C : m

14/09/2014 17/09/2014

Insitu Density Test

Water Sample

Schmidt Hammer Test

GROUND LEVEL :

toWORKS ORDER NO. :

1.50


Weathering

N

Depth

REMARKS

(m)

Legend

Face A : m D

to

PROJECT :

CONTRACT NO. :

1.50

X46-TP 3

1.50 Grade

+30.00840,433.30

808,123.91

TRIAL PIT NO. :

36°

C

A

DD

1.50m

1.50m

D

1.50m1.50m1.50m

1.50m

BBB

1.60

3.00

1.60

3.00

MASONRY SURFACE.

CONCRETE.

Very loose, greyish brown, silty medium to coarse SAND with some cobblesized rock fragments. (FILL)

Face A : m

GEOTECH

ENGINEERING

LIMITEDDATE : 30/10/2014


CRETAINING WALL

0.20

CONCRETE

0.70m

FILL

0.30m

Sketch

30/10/2014

PLAN

Seepage

Description

EXCAVATION DATE :




Block Sample

0

1

2

3

4

5

Face B : m 1.50

TR

IAL

PIT

NO

.

30/10/2014



(m) (Face )

E

SYMBOL

TR

IAL

PIT

RE

CO

RD

Face D : m

0

1

2

3

4

5

BACKFILL DATE :

m.P.D.

Samples

& Tests

Depth

CO-ORDINATES :

X4

6-T

P 4

Face C : m

30/10/2014 30/10/2014

Insitu Density Test

Water Sample

Schmidt Hammer Test

GROUND LEVEL :

toWORKS ORDER NO. :

1.50


Weathering

N

Depth

REMARKS

(m)

Legend

Face A : m D

to

PROJECT :

CONTRACT NO. :

1.50

X46-TP 4

1.50 Grade

+29.50840,433.01

808,120.77

TRIAL PIT NO. :

38°

CONCRETEU-CHANNEL

D B

1.50m

1.50m

1.50m

D B

A

D B

AA

1.50m

1.50m1.50mMASONRY

SURFACE

FILL

FILL

A

C

CONCRETE

0.00m

3.00m

38°

0.20m

0.20

1.60m

0.30m/0.70m

CONCRETE

U-Channel

RETAINING

WALL

CONCRETE U-CHANNEL

0.10

1.50

2.00

0.10

1.50

2.00

III

CONCRETE SLAB.

Loose, brownish grey, silty medium to coarse SAND with some concretefragments and rubbish. (FILL)

Moderately strong, brownish pink mottled with black, moderately decomposedmedium grained GRANITE.

Face A : m

GEOTECH

ENGINEERING

LIMITEDDATE : 12/10/2014


Sketch

12/10/2014

PLAN

Seepage

Description

EXCAVATION DATE :




Block Sample

0

1

2

3

4

5

Face B : m 1.50

TR

IAL

PIT

NO

.

12/10/2014



(m) (Face )

E

SYMBOL

TR

IAL

PIT

RE

CO

RD

Face D : m

0

1

2

3

4

5

BACKFILL DATE :

m.P.D.

Samples

& Tests

Depth

CO-ORDINATES :

X4

6-T

P 5

Face C : m

12/10/2014 12/10/2014

Insitu Density Test

Water Sample

Schmidt Hammer Test

GROUND LEVEL :

toWORKS ORDER NO. :

1.50


Weathering

N

Depth

REMARKS

(m)

Legend

Face A : m D

to

PROJECT :

CONTRACT NO. :

1.50

X46-TP 5

1.50 Grade

+24.50840,450.11

808,107.28

TRIAL PIT NO. :

CONCRETEU-CHANNEL

1.50m

C1.50m1.50m

RETAINING WALL

CONCRETE U-CHANNEL

0.70m

0.30m

FILL

Grade IIIGRANITE

Steel pipe

D B

1.50m

1.50m

D B

A

D B

AA

1.50m

0.00m

Grade III

GRANITE

FILL

FILL

0.60m

0.50m

A C

1.50m

1.00m

0.10m

2.00m2.00m

0.00m0.10m

1.70m

0.15

0.80

1.10

2.10

0.15

0.80

1.10

2.10

MASONRY SURFACE.

CONCRETE.

Medium dense, dark greyish brown, sandy medium to coarse GRAVEL withoccasional angular cobble sized rock fragments. (FILL)

Medium dense, brownish grey, silty fine to medium SAND. (FILL)

(A) Moderately strong, brownish pink mottled with black, moderatelydecomposed medium grained GRANITE.

Face A : m

GEOTECH

ENGINEERING

LIMITED

Grade IIIGRANITE

DATE : 10/12/2014


Sketch

10/12/2014

PLAN

Seepage

Description

EXCAVATION DATE :


(m)

Legend

Face A : m D

to

PROJECT :

CONTRACT NO. :

1.50

X46-TP 6

1.50 Grade

+27.10840,451.81

808,101.05

TRIAL PIT NO. :

MASONRY

SURFACE

FILL

FILL

MASONRY

SURFACE

A

Depth

CO-ORDINATES :

X4

6-T

P 6

Face C : m

09/12/2014 10/12/2014

Insitu Density Test

Water Sample


Block Sample

0

1

2

3

4

5

Schmidt Hammer Test

GROUND LEVEL :

toWORKS ORDER NO. :

1.50


Weathering

N

Depth

REMARKS

C

CONCRETE

CONCRETE

0.15m

0.00m

C

A

2.10

DD

1.50m

1.50m

D

1.50m1.50m1.50m

1.50m

BBB

0.80m

Grade III GRANITE


Face B : m 1.50

TR

IAL

PIT

NO

.

10/12/2014



(m) (Face )

E

SYMBOL

TR

IAL

PIT

RE

CO

RD

Face D : m

0

1

2

3

4

5

BACKFILL DATE :

m.P.D.

Samples

& Tests

32°

32°

Documents

Structural Feasibility Report-prison