Geotechnical Level 1 Supervision Report Brindalee Estate ......Organic soils, such as topsoils, severely root affected subsoils and peat; Contaminated soils is part of the brief; Materials

TOTAL GEOTECHNICS

Adelaide, Ballarat, Brisbane, Hallam, Hoppers Crossing, Traralgon, Warrnambool

TGE15035-15 Revision 1

Sandridge Roads July 2015

Geotechnical Level 1 Supervision Report

Brindalee Estate – Stage 4, Cranbourne

Brindalee Estate- Stage 4, Cranbourne

Geotechnical – Level 1 Supervision Report

Report No: TGE15035-15 Revision 1

Client: Sandridge Roads

July 2015

2

Contents

1. Introduction ........................................................................................................................ 3

2. Scope of Works ................................................................................................................... 3

3. Inspections/Supervision ..................................................................................................... 3

4. Testing ................................................................................................................................ 4

5. Conclusion .......................................................................................................................... 5

Appendix 1 – Site Plan ............................................................................................................... 6

Appendix 2 – Testing Summary ................................................................................................. 7

Appendix 3 – Nata Test Results ............................................................................................... 10

Appendix 4 – Fill Certificates.................................................................................................... 11





July 2015

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1. Introduction

Total Geotechnics has been engaged by Sandridge Roads to provide Level 1 Geotechnical Supervision on the Brindalee Estate, Stage 4, Cranbourne (Refer Appendix 1 – Site Plans)

This Level 1 report presents the results of supervision activities, compaction and moisture control, material placement and laboratory testing for ground works undertaken at the Brindalee Estate, Cranbourne. This report covers construction activities carried out from the 22nd December 2014 to the 7th July 2015.

2. Scope of Works

The scope of works involved the placement of On-site General Fill. Fill Material was placed in Level

one fill areas, in accordance with AS 3798-2007, Guidelines on earthworks for commercial and

residential developments. The level of FILL to be placed is less than 5m as per AS3798 Section 1.1.

General fill material used for the construction was locally sourced and predominantly comprising of

Silty CLAY.

3. Inspections/Supervision

Full time Level 1 supervision and inspection were undertaken between; 22nd December 2014 to 7th July 2015 including supervision and inspections regarding the stripping and removal as per AS3798 Section 3 shall have removed:

Organic soils, such as topsoils, severely root affected subsoils and peat;

Contaminated soils is part of the brief;

Materials which undergo volume change or loss of strength when disturbed and exposed to moisture;

Silts, or materials that have deleterious engineering properties of silt;

Other materials with properties that are unsuitable for the forming of structural fill;

Fill that contains wood, metal plastic, boulders or other deleterious material, in sufficient proportions to affect the required performance of the fill.

The maximum particle size of any rocks or other lumps, within the layer has not exceeded two thirds (2/3) of the compacted layer thickness.

The lots inspected were essentially homogeneous in relation to material type and moisture condition, rolling response and compaction technique and which has been used for the assessment of relative compaction of an area of work (AS3798 Section 1.2.8).





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4

Prior to placement any existing filled ground, for which the conditions of the placement are not adequately documented have not been assumed to have been of either standard compaction or of the composition adequate to support fill or any loads has been removed (AS3798 Section 2o).

4. Testing

The project was classified as Residential thereby requiring a minimum compaction result of 95% density ratio Standard Compaction for the cohesive soils (AS 1289 5.7.1 & 5.1.1) throughout the Level 1 Fill and in accordance with AS 3789-2007 – Table 5.2. A minimum of 3 tests per lot (AS3798 Table 8.1) was undertaken throughout the placement of fill.

Test were performed using a Nuclear Density Gauge for field density determination AS 1289.5.8.1. Testing was completed at a rate of 3 field density tests per day’s production as based on the minimum requirements of AS 3798 – 2007 and taken from each layer of fill placed.

The filling operation was undertaken between the 22nd December 2014 and 7th July 2015. The material was Site-derived General Fill. Material was placed in approximately 300 to 400mm loose layers, rolling effort with on-site Compactor (to seal of each layer of placed General Fill material) to a compacted 200 to 300mm layers that achieved 95% Standard Compaction which met Australian Standards specifications. This was considered the best method to achieve compaction using the plant and machinery available.

A total of Eighteen (18) tests were performed on site. The reports verify the achievement of the minimum density requirement of 95% Standard Compaction throughout the full depth area, with each layer tested accordingly. All test results were provided to our client Sandridge Roads for inclusion within their internal quality system (Refer to Appendix 2 Summary of Results).

At the completion of the structural layers and material within 150mm of permanent subgrade level in cuttings, test rolling was undertaken and the layers withstood test rolling without visible deformation or springing (AS 3798 Section 5.5).

The lots that are covered by this Level 1 Supervision report are listed in the table below.

Table 1 - Lots under Level 1 Supervision

72 77 82 87 92 97

73 78 83 88 93 98

74 79 84 89 94

75 80 85 90 95

76 81 86 91 96





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5. Conclusion

On the completion of the earthworks and after analysing the materials used, it has been concluded

that the filling procedure conducted by Sandridge Roads satisfied the requirements of AS 3798 in

regards to the placement of fill materials on a project under Level 1 Supervision and in accordance

with the project specification as provided to Total Geotechnics.

This report has been prepared for the benefit of our client with respect to the particular brief given

to us and it may not be relied upon in other contexts or for any other purpose without our prior

review and agreement. No responsibility for this report will be taken by Total Geotechnics if it is

altered in any way, or not reproduced in full.

Prepared by: Reviewed and Authorized by: Alvin Tan (BE Civil and Infrastructure) GradIEAust Matt Noonan (BE Geological) MIEAust Geotechnical Engineer Geotechnical Manager Mob: 0419 617 361 Mob: 0419 349 906





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Appendix 1 – Site Plan

Level 1

Supervision





July 2015

7

Appendix 2 – Testing Summary

Sample no. &

Report no.

Location

Layer

RL:

Material Type

Date Tested

Oversize (%)

Density Ratio (%)

Moisture Variation

(%)

Remark

Sample No: 01

Report No: 02

Between Lots 72/73

Centre Layer 1

Site Derived

Silty Clay 22/12/2014 0 98.5

-3.0

Drier Pass

Sample No: 02

Report No: 02

Between Lots 80/81

Centre Layer 1

Site Derived

Silty Clay 22/12/2014 0 95.5

-3.0

Drier Pass

Sample No: 03

Report No: 03

Between Lots 90/89

Centre Final Layer

Site Derived

Silty Clay

12/02/2015

0 101.0 -7.0

Drier Pass

Sample No: 04

Report No: 03

Between Lots 88/87

Centre Final Layer

Site Derived

Silty Clay

12/02/2015

0 96.5 -2.5

Drier Pass

Sample No: 05

Report No: 03

Between Lots 86/85

Centre Final Layer

Site Derived

Silty Clay

12/02/2015

0 98.0 -2.0

Drier Pass

Sample No: 06

Report No: 03

Between Lots 84/83

Centre Final Layer

Site Derived

Silty Clay

12/02/2015

0 98.0 -2.5

Drier Pass





July 2015

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Sample no. &

Report no.

Location

Layer

RL:

Material Type

Date Tested

Oversize (%)

Density Ratio (%)

Moisture Variation

(%)

Remark

Sample No: 07

Report No: 04

Between Lots 77/78

Centre In-situ

Site Derived

Silty Clay

16/02/2015

0 104.5 -3.0

Drier Pass

Sample No: 08

Report No: 04

Between Lots 79/80

Centre In-situ

Site Derived

Silty Clay

16/02/2015

0 98.5 -3.0

Drier Pass

Sample No: 09

Report No: 04

Between Lots 81/82

Centre In-situ

Site Derived

Silty Clay

16/02/2015

0 98.0 -3.0

Drier Pass

Sample No: 17

Report No: 07

Lot 72

5m East of West

5m North of South

Layer 2 Clay Backfill

06/05/2015

0 98.0 0.0

OMC Pass

Sample No: 18

Report No: 07

Lot 73

7m East of West

8m North of South


06/05/2015

0 97.5 +0.5

Wetter Pass

Sample No: 19

Report No: 07

Lot 74

4m East of West

11m North of South


06/05/2015

0 97.0 +0.5

Wetter Pass

Sample No: 20

Report No: 07

Lot 75

10m East of West

7m North of South


06/05/2015

0 97.0 0.0

OMC Pass

Sample No: 21

Report No: 07

Lot 76

3m East of West

6m North of South


06/05/2015

0 97.0 +0.5

Wetter Pass





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Sample no. &

Report no.

Location

Layer

RL:

Material Type

Date Tested

Oversize (%)

Density Ratio (%)

Moisture Variation

(%)

Remark

Sample No: 22

Report No: 08

Boundary of 91&92

6m

East of West

FSL Site Derived Silty Clay 7/07/15 0 99.5 -2.0

Drier Pass

Sample No: 23

Report No: 08

Boundary of 93&94

10m

East of West


Drier Pass

Sample No: 24

Report No: 08

Boundary of 95&96

8m

North of South


Drier Pass

Sample No: 25

Report No: 08

Boundary of 97&98

4m

North of South


Drier Pass





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Appendix 3 – Nata Test Results

Field Density Test ResultsAS1289.5.7.1

Client: Sandridge Roads Job No: TG50196

Project: Tangamere Way Report: 3

Location: Cranbourne

Test Number 50196-3 50196-4 50196-5 50196-6

Date of Test 12-Feb-15 12-Feb-15 12-Feb-15 12-Feb-15

Time of Test PM PM PM PM

Test Location Cranbourne Cranbourne Cranbourne Cranbourne

Lot 90 - 89 Lot 88 - 87 Lot 86 - 85 Lot 84 - 83

Centre Centre Centre Centre

Level / Layer Final Layer Final Layer Final Layer Final Layer

Depth of Layer mm 300+ 300+ 300+ 300+

Depth of Test mm 300 300 300 300

Field Wet Density t/m3 1.87 1.86 1.87 1.88

Field Moisture Content % 15.0 17.5 19.9 19.1

Material Type

Oversize Material WET% 0 0 0 0

Sieve Size mm 19 19 19 19

Peak Converted Wet Density t/m3 1.85 1.92 1.91 1.91

Optimum Moisture Content % 22.0 20.0 22.0 21.5

Compactive Effort Used std/mod STD STD STD STD

Moisture Ratio % 68.0 87.5 91.0 88.5

Moisture Variation % 7.0 2.5 2.0 2.5

from OMC Drier Drier Drier Drier

Density Ratio % 101.0 96.5 98.0 98.0

Specification Requirements 95% STD

Notes:

Test Method AS1289 5.8.1 5.7.1 2.1.1 1.1 Test Selection: AS 1289.1.4.1 Sampling Method: AS 1289.1.2.1.6.4(b)

Approved Signatory Picture 22Accreditation for compliance with ISO/IEC 17025

The results of tests, calibrations and/or measurements included

in this document, are traceable to Australian / national standards

Date: 24-Feb-15

Total Geotechnics Australia P/L

NATA Accredited Laboratory No. 19354

Chris Wilson

Site Derived Site Derived Site Derived Site Derived

PH 03 9796 3363

[email protected]

1/13 Keppel Drive

PO Box 211

Hallam VIC 3803

0

TG301 /v.6 Aug 13



Project: Tangemere Way Report: 2

Location: Cranbourne West

Test Number 50196-01 50196-2

Date of Test 22-Dec-14 22-Dec-14

Time of Test

Test Location Between Lots Between Lots

72/73 80/81

Centre Centre

Level / Layer Layer 1 Layer 1

Depth of Layer mm 200mm 200mm

Depth of Test mm 175mm 175mm

Field Wet Density t/m3 1.89 1.83

Field Moisture Content % 44.0 36.4

Material Type

Oversize Material WET% 0 0

Sieve Size mm 19 19

Peak Converted Wet Density t/m3 1.91 1.91

Optimum Moisture Content % 47.0 39.5

Compactive Effort Used std/mod STD STD

Moisture Ratio % 93.5 92.5

Moisture Variation % 3.0 3.0

from OMC Drier Drier

Density Ratio % 98.5 95.5


Notes:

Test Method AS1289 5.8.1 5.7.1 2.1.1 1.1 Test Selection: N/A Sampling Method: AS 1289.1.2.1.6.4(b)




Date: 08-Jan-15

PH 03 9796 3363

[email protected]


1/13 Keppel Drive

PO Box 211

Hallam VIC 3803

0


Grant Sloan

Site Derived Silty

CLAY

Site Derived Silty

CLAY

TG301 /v.6 Aug 13




Location: Various Lots

Test Number 50196-22 50196-23 50196-24 50196-25

Date of Test 7-Jul-15 7-Jul-15 7-Jul-15 7-Jul-15

Time of Test AM AM AM AM

Test LocationBoundary of Lots

91&92

Boundary of Lots

93&94

Boundary of Lots

95&96

Boundary of Lots

97&98

6m 10m 8m 4m

East of West

Edge

East of West

Edge

North of South

Edge

North of South

Edge

Level / Layer FFL FFL FFL FFL

Depth of Layer mm 300 300 300 300

Depth of Test mm 275 275 275 275

Field Wet Density t/m3 1.92 1.93 1.92 1.94

Field Moisture Content % 22.5 22.3 22.4 22.6

Material Type

Oversize Material WET% 0 0 0 0

Sieve Size mm 19 19 19 19

Peak Converted Wet Density t/m3 1.94 1.92 1.94 1.95

Optimum Moisture Content % 24.5 24.5 24.5 24.5

Compactive Effort Used std/mod STD STD STD STD

Moisture Ratio % 92.0 92.0 92.0 92.0

Moisture Variation % 2.0 2.0 2.0 2.0

from OMC Drier Drier Drier Drier

Density Ratio % 99.5 100.5 99.0 99.5


Notes:





Date: 08-Jul-15



Chris Wilson

Site Derived

Silty CLAY

Site Derived

Silty CLAY

Site Derived

Silty CLAY

Site Derived

Silty CLAY

PH 03 9796 3363

[email protected]

1/13 Keppel Drive

PO Box 211

Hallam VIC 3803

0

TG301 /v.6 Aug 13




Location: Various Lots

Test Number 50196-17 50196-18 50196-19 50196-20 50196-21

Date of Test 6-May-15 6-May-15 6-May-15 6-May-15 6-May-15

Time of Test AM AM AM AM AM

Test Location Various Lots Various Lots Various Lots Various Lots Various Lots

Lot 72 Lot 73 Lot 74 Lot 75 Lot 76

5m East of

West

7m East of

West

4m East of

West

10m East of

West

3m East of

West 5m North of

South

8m North of

South

11m North of

South

7m North of

South

6m North of

South

Level / Layer Layer 2 Layer 2 Layer 1 Layer 1 Layer 1

Depth of Layer mm 300 300 300 300 300

Depth of Test mm 275 275 275 275 275

Field Wet Density t/m3 2.00 2.00 1.96 1.95 1.96

Field Moisture Content % 20.2 20.8 22.3 22.5 22.0

Material Type

Oversize Material WET% 0 0 0 0 0

Sieve Size mm 19 19 19 19 19

Peak Converted Wet Density t/m3 2.04 2.06 2.02 2.01 2.02

Optimum Moisture Content % 20.0 20.5 22.0 22.5 21.5

Compactive Effort Used std/mod STD STD STD STD STD

Moisture Ratio % 100.0 102.5 102.5 100.0 102.5

Moisture Variation % 0.0 0.5 0.5 0.0 0.5

from OMC OMC Wetter Wetter OMC Wetter

Density Ratio % 98.0 97.5 97.0 97.0 97.0


Notes:





Date: 11-May-15



Chris Wilson

Clay Backfill Clay Backfill Clay Backfill Clay Backfill Clay Backfill

PH 03 9796 3363

[email protected]

1/13 Keppel Drive

PO Box 211

Hallam VIC 3803

0

TG301 /v.6 Aug 13




Location: Cranbourne

Test Number 50196-7 50196-8 50196-9

Date of Test 16-Feb-15 16-Feb-15 16-Feb-15

Time of Test PM PM PM

Test Location Cranbourne Cranbourne Cranbourne

Lot 77 - 78 Lot 79 - 80 Lot 81 - 82

Level / Layer Insitu Insitu Insitu

Depth of Layer mm 300+ 300+ 300+

Depth of Test mm 300 300 300

Field Wet Density t/m3 2.17 1.89 1.87

Field Moisture Content % 7.4 17.7 19.7

Material Type

Oversize Material WET% 0 0 0

Sieve Size mm 19 19 19

Peak Converted Wet Density t/m3 2.08 1.91 1.91

Optimum Moisture Content % 10.5 21.0 23.0

Compactive Effort Used std/mod STD STD STD

Moisture Ratio % 71.5 83.5 85.0

Moisture Variation % 3.0 3.0 3.0

from OMC Drier Drier Drier

Density Ratio % 104.5 98.5 98.0


Notes:





Date: 24-Feb-15



Chris Wilson

Site Derived Site Derived Site Derived

PH 03 9796 3363

[email protected]

1/13 Keppel Drive

PO Box 211

Hallam VIC 3803

0

TG301 /v.6 Aug 13





July 2015

11

Appendix 4 – Fill Certificates

1/13 Keppel Drive, Hallam VIC 3803 03 9796 3363 www.totalgeotechnics.com.au

Controlled Fill Certificate

Certificate of Controlled Filling

Earthworks Operations (AS3798 – Level 1 Inspection & Testing)

Brindalee Estate- Stage 4

Cranbourne East

Lot 72

\

Filling in the Areas as defined above and in the Level 1 Report pertaining to the

above mentioned project, has been carried out to meet requirements of the

project specifications and Level 1 & Certification as per AS3798 – 2007

“Guidelines on Earthworks for Commercial and Residential Developments”

Alvin Tan Matt Noonan (BE Civil and Infrastructure) GradIEAust (BE Geological) MIEAust Geotechnical Engineer Geotechnical Manager Mob: 0419 617 361 Mob: 0419 349 906






Cranbourne East

Lot 73











Cranbourne East

Lot 74











Cranbourne East

Lot 75











Cranbourne East

Lot 76











Cranbourne East

Lot 77











Cranbourne East

Lot 78











Cranbourne East

Lot 79











Cranbourne East

Lot 80











Cranbourne East

Lot 81











Cranbourne East

Lot 82











Cranbourne East

Lot 83











Cranbourne East

Lot 84











Cranbourne East

Lot 85











Cranbourne East

Lot 86











Cranbourne East

Lot 87











Cranbourne East

Lot 88











Cranbourne East

Lot 89











Cranbourne East

Lot 90











Cranbourne East

Lot 91











Cranbourne East

Lot 92











Cranbourne East

Lot 93











Cranbourne East

Lot 94











Cranbourne East

Lot 95











Cranbourne East

Lot 96











Cranbourne East

Lot 97











Cranbourne East

Lot 98






Documents

Geotechnical Level 1 Supervision Report Brindalee Estate ......Organic soils, such as topsoils, severely root affected subsoils and peat; Contaminated soils is part of the brief; Materials