Earthworks Completion Report

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EARTHWORKS COMPLETION REPORTELLEN STIRLING PARADE,

ELLENBROOK

Ellenbrook, W.A.Georgiou Group Pty Ltd

GEOTPERT08050AZ-AH27 March 2013


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27 March 2013

EARTHWORKS COMPLETION REPORTELLEN STIRLING PARADE,

ELLENBROOK

Ellenbrook, W.A.Georgiou Group Pty Ltd

GEOTPERT08050AZ-AH27 March 2013


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CONTENTS

1 INTRODUCTION 1

2 PROPOSED DEVELOPMENT 1

3 EARTHWORKS 1

4 BACKGROUND INFORMATION 2

5 INFORMATION SUPPLIED BY OTHERS 2

6 COMPACTION CRITERIA 2

7 CONTRACTORS TEST RESULTS 3

8 COFFEY FIELD OBSERVATIONS AND TESTING 3

8.1 Earthworks Monitoring 3

8.2 Audi t Compaction Testing 3

9 DISCUSSION 3

9.1 General 3


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ATTACHMENTS

Figures

1 PSP Test Location Plan 13/12/2012



Append ices

A Cossill & Webley Earthworks Specification (14 pages)

B Georgiou Group Pty Ltd Earthworks Confirmation Letter (1 page)

C Georgiou Group Pty Ltd Site Compaction Records (14 pages)

D Coffey PSP Field Test Results (10 pages)

E Laboratory Test Results (6 pages)


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EARTHWORKS COMPLETION REPORT

ELLEN STIRLING PARADE, ELLENBROOK

1 INTRODUCTION

This Earthwork Completion Report (ECR) presents the results of part time monitoring carried out by

Coffey Geotechnics Pty Ltd (Coffey) of the earthworks for Georgiou Group Pty Ltd (Georgiou) for Ellen

Stirling Parade located close to the town centre, Ellenbrook WA. Coffeys level of involvement is

equivalent to Level 2 Geotechnical Investigation Authority of AS3798-2007.

These services were provided and carried out in accordance with Coffeys proposal dated 7 November

2012 (Ref: GEOTPERT08050AZ-AC-P) and were commissioned by Sinisa Rakovic of Georgiou via a

completed and signed Consultancy Agreement form dated 31 October 2012.

It should be noted however, that the requirements of the proposal related specifically to Level 1

Inspection and Testing for the proposed Bunnings Store located on The Promenade and that

subsequently works for the nearby Urbano residential development and Ellen Stirling Parade were

included within this scope, though not the requirement for Level 1 Inspection and Testing.

This work was carried out to provide an independent review of the compaction of bulk earthworksrequired to bring Ellen Stirling Parade and adjacent lots to design levels.

2 PROPOSED DEVELOPMENT

It is understood that the project involves bulk fill earthworks along the Ellen Stirling Parade alignment

and adjacent lots to achieve design levels. Ellen Stirling Parade is aligned roughly east to west and is

about 325m north of Urbano and being parallel to The Promenade, to the north, and The Parkway, to

the south The extent of earthworks associated with Ellen Stirling Parade covered by this report is about


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4 BACKGROUND INFORMATION

Coffey has been involved with geotechnical investigation and earthworks monitoring during the ongoing

development of Ellenbrook since its inception in 2000.

Coffey has previously performed two site specific geotechnical investigations for the adjacent

Ellenbrook Town Centre Retail and Middle School sites in November 2002 and April 2005 respectively.

Prior to earthworks geotechnical investigation reports were prepared, dated 20 November 2002 (Ref:

P2572/16-AB) and 18 April 2005 (Ref: P2572.60-AA Rev 1). The conclusions and recommendations of

the reports have been reviewed during the preparation of this document.

Fieldwork during the investigation for the Ellenbrook Town Centre Retail site comprised 27 test pits, 27

Perth Sand Penetrometer (PSP) tests and 9 Electric Friction Cone Penetration (CPT) tests. The

investigations identified that these areas were underlain by Bassendean Dune Sand. The sand was

assessed as loose to medium dense within the top two metres of the natural ground surface.

CPTs were carried out at 6 locations to depth varying from 4.0m to 5.0m below the existing groundsurface of the Middle School site. The ground conditions encountered during the investigation

comprised medium dense to dense sand to a depth of 5.0m below the natural ground surface.

It should be noted that cohesive fill materials have previously been placed within the footprint of Ellen

Stirling Parade, as part of bulk earthworks for the adjacent Parkway road alignment in 2012. Details of

these works are presented in Coffeys earthworks completion report, dated 23 September 2012 (Ref:

GEOTPERT08050AY-AA) and letter, dated 13 June 2012 (Ref: GEOTPERT08050AY-AB), which

should be read in conjunction with this report.


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7 CONTRACTORS TEST RESULTS

Georgiou performed compaction testing on the compacted sand fill during fill placement using a Perth

Sand Penetrometer (PSP). The compaction testing was carried out between 24 November 2012 and 15

January 2013. The PSP test results are attached in Appendix C and indicate that the compaction

criteria has been achieved.

8 COFFEY FIELD OBSERVATIONS AND TESTING

8.1 Earthworks Monitoring

Site visits were carried out by personnel from Coffey to observe topsoil stripping and bulk fill placement.

Site visits were undertaken to assess earthworks Coffey personnel made site visits to assess topsoil

stripping, subgrade suitability and bulk earthworks compaction for Ellen Stirling Parade between

November 2012 and February 2013.

8.2 Audi t Compaction Testing

The results of the PSP testing confirm that the sand fill has been compacted sufficiently to achieve the

requirements of the specification. Coffey PSP testing results are presented in Appendix D. Coffey PSP

test locations are presented on Figures 1 3.

9 DISCUSSION


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Builder to ensure that footing designs and construction are compliant with the building foundation

design for the lot in accordance with the Lot classification referenced to AS 2870-2011 and to carry out

their own compaction checks on a lot by lot basis and compact any localised loose soil zones identified.

The owner of the property has a requirement to maintain the property and foundations in accordance

with AS 2870-2011, including but not limited to, maintaining adequate drainage away from the house

foundations. Purchasers should be provided with a copy of the CSIRO Information Sheet BTF 18

(Foundation Maintenance and Footing Performance: A Homeowner's Guide) available for download athttp://www.publish.csiro.au/pid/7076.htm

10 IMPORTANT INFORMATION ABOUT YOUR COFFEY REPORT

The readers attention is drawn to the important information about this report which follows the main

text.


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As a client of Coffey you should know that site subsurface conditions cause more construction

problems than any other factor. These notes have been prepared by Coffey to help you

interpret and understand the limitations of your report.Your report is based on project specific criteria

Your report has been developed on the basis of your

unique project specific requirements as understood

by Coffey and applies only to the site investigated.

Project criteria typically include the general nature of

the project; its size and configuration; the location of

any structures on the site; other site improvements;the presence of underground utilities; and the additional

risk imposed by scope-of-service limitations imposed

by the client. Your report should not be used if there

are any changes to the project without first asking

Coffey to assess how factors that changed subsequent

to the date of the report affect the report's

recommendations. Coffey cannot accept responsibility

f bl th t d t h d f t

Your report will only give

preliminary recommendations

Y t i b d th ti th t th

earth, rock and time. The actual interface between

materials may be far more gradual or abrupt than

assumed based on the facts obtained. Nothing can

be done to change the actual site conditions which

exist, but steps can be taken to reduce the impact of

unexpected conditions. For this reason, ownersshould retain the services of Coffey through the

development stage, to identify variances, conduct

additional tests if required, and recommend solutions

to problems encountered on site.

Important information about your CoffeyReport


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Interpretation by other design professionals

Costly problems can occur when other design professionals

develop their plans based on misinterpretations

of a report. To help avoid misinterpretations, retain

Coffey to work with other project design professionals

who are affected by the report. Have Coffey explain

the report implications to design professionals affected

by them and then review plans and specifications

produced to see how they incorporate the report

findings.

Data should not be separated from the report*

The report as a whole presents the findings of the site

assessment and the report should not be copied in

part or altered in any way.

Logs, figures, drawings, etc. are customarily included

in our reports and are developed by scientists,

engineers or geologists based on their interpretation

f fi ld l ( bl d b fi ld l) d

Rely on Coffey for additional assistance

Coffey is familiar with a variety of techniques and

approaches that can be used to help reduce risks for

all parties to a project, from design to construction. It

is common that not all approaches will be necessarily

dealt with in your site assessment report due to

concepts proposed at that time. As the project

progresses through design towards construction,

speak with Coffey to develop alternative approaches

to problems that may be of genuine benefit both in

time and cost.

Responsibility

Reporting relies on interpretation of factual information

based on judgement and opinion and has a level of

uncertainty attached to it, which is far less exact than

the design disciplines. This has often resulted in claims

being lodged against consultants, which are unfounded.

To help prevent this problem, a number of clauses

h b d l d f i t t t d

Important information about your CoffeyReport


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Figures


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PSP1

PSP2

PSP3

PSP4

PSP5PSP6

PSP7

PSP8

PSP9

PSP10 PSP11

PSP12

PSP13

PSP14

PSP15

PSP16


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PSP1

PSP2PSP3

PSP4

PSP5

PSP6

PSP7

PSP8 PSP9

PSP10

PSP11

PSP12PSP13

PSP14

PSP15

PSP1

P


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PSP1PSP2

PSP3

PSP4PSP5 PSP6

PSP7

PSP8

PSP9

PSP10

PSP11

PSP12

PSP13

PSP14PSP15

PSP16PSP17

PSP18

PSP23


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Appendix AC ill & W bl E th k S ifi ti


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Appendix B


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Appendix C


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Appendix D


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PERTH SAND PENETROMETER

Test Report No.AS1289.6.3.3 - 1997 Job No: GEOTPERT08050AZ

SCALA PENETROMETER TEST Office: Perth

AS1289.6.3.2 - 1997

Client: Georgiou Group Pty Ltd

Principal:

Project: Ellenbrook Town Centre - Ellen Stirling Parade

Location: Ellenbrook, WA

Soil type: Sand

Soil moisture:

Depth to water:

date: 13/12/2012

tested by: TC

hammer mass: 9kg

hammer drop: 600mm

penetrometer used: Coffey 1

Test Location* 1 2 3 4 5 6

Test Depth mm Blows/150mm

0-150 Set Set Set Set Set Set

150-300 2 2 3 3 3 2

300-450 4 6 8 6 6 4

450-600 8 11 13 13 11 10

600-750 12 19 19 20 18 16

750-900 14 20+ 20+ 20+ 20+ 20+

900-1050 12


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AS1289.6.3.2 - 1997


Principal:



Soil type: Sand

Soil moisture:

Depth to water:

date: 13/12/2012

tested by: TC

hammer mass: 9kg

hammer drop: 600mm





150-300 3 3 4 3 3 3

300-450 4 5 7 7 7 6

450-600 9 10 12 13 12 9

600-750 13 14 17 15 20+ 15

750-900 17 15 20+ 20+ 18

900-1050 19 17 20


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AS1289.6.3.2 - 1997


Principal:



Soil type: Sand

Soil moisture:

Depth to water:

date: 13/12/2012

tested by: TC

hammer mass: 9kg

hammer drop: 600mm


Test Location* 13 14 15 16


0-150 Set Set Set Set

150-300 3 4 3 3

300-450 7 8 5 8

450-600 9 12 9 13

600-750 14 18 12 20

750-900 18 20+ 14 20+

900-1050 19 15


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AS1289.6.3.3-1997

SCALA PENETROMETER TEST

AS1289.6.3.2-1997

Test Report No.

Job No: GEOTPERT08050AZ

Office: Perth


Principal:

Project: Ellenbrook Town Centre - Urbano


Soil type: Sand

Soil moisture:

Depth to water:

Date: 16/01/2013

Tested by: TC

Hammer mass: 9kg

Hammer drop: 600mm

Penetrometer used: Coffey 1


Test Depth (mm) Blows/150mm

0-150 SET SET SET SET SET SET

150-300 3 4 4 3 7 4

300-450 4 7 7 8 12 11

450-600 7 11 11 14 16 17

600-750 11 17 18 20+ 20+ 20

750-900


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AS1289.6.3.3-1997


AS1289.6.3.2-1997

Test Report No.


Office: Perth


Principal:

Project: Ellenbrook Town Centre - Urbano


Soil type: Sand

Soil moisture:

Depth to water:

Date: 16/01/2013

Tested by: TC

Hammer mass: 9kg

Hammer drop: 600mm


Test Location* 13 14 15 16 17 18



150-300 2 3 3 3 4 2

300-450 4 6 6 5 7 5

450-600 6 11 10 9 11 6


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AS1289.6.3.3-1997


AS1289.6.3.2-1997

Test Report No.


Office: Perth


Principal:Project: Ellenbrook Town Centre - Urbano


Soil type: Sand

Soil moisture:

Depth to water:

Date: 16/01/2013

Tested by: TCHammer mass: 9kg

Hammer drop: 600mm


Test Location* 25 26



150-300 4 3

300-450 7 7


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PERTH SAND PENETROMETER Test Report No.

AS1289.6.3.3 - 1997 Job No: GEOTPERT08050AZ


AS1289.6.3.2 - 1997


Principal:



Soil type: Sand

Soil moisture:

Depth to water:

date: 08/02/2013

tested by: TC

hammer mass: 9kg

hammer drop: 600mm





150-300 3 3 4 3 2 2

300-450 8 6 9 5 6 4

450-600 12 8 16 10 9 8

600-750 16 13 20+ 17 14 11

750-900 20+ 19 20+ 20 18

900-1050 20+ 20+ 20


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AS1289.6.3.2 - 1997


Principal:



Soil type: Sand

Soil moisture:

Depth to water:

date: 08/02/2013

tested by: TC

hammer mass: 9kg

hammer drop: 600mm





150-300 3 2 3 3 2 2

300-450 6 4 5 5 5 4

450-600 11 6 8 9 7 6

600-750 20+ 11 10 16 10 8

750-900 20 17 20+ 15 13

900-1050 20+ 19 18 15


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AS1289.6.3.2 - 1997


Principal:



Soil type: Sand

Soil moisture:

Depth to water:

date: 08/02/2013

tested by: TC

hammer mass: 9kg

hammer drop: 600mm


Test Location* 13 14 15 16 17 18



150-300 3 2 4 2 3 4

300-450 6 4 8 6 7 7

450-600 10 6 15 13 14 8

600-750 17 8 19 18 17 12

750-900 19 10 20+ 20+ 20+ 18

900-1050 20+ 13 20


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AS1289.6.3.2 - 1997


Principal:



Soil type: Sand

Soil moisture:

Depth to water:

date: 08/02/2013

tested by: TC

hammer mass: 9kg

hammer drop: 600mm


Test Location* 19 20 21 22 23


0-150 Set Set Set Set Set

150-300 4 5 4 2 4

300-450 9 10 7 6 7

450-600 13 17 12 10 11

600-750 16 20 17 18 14

750-900 20+ 20+ 17 20+ 20

900-1050 20 20+


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