REPORT ON LEVEL 1 EARTHWORKS INSPECTION AND TESTING

Transcription

1 29 February 2016 Project No. SGS/16/005 REPORT ON LEVEL 1 EARTHWORKS INSPECTION AND TESTING PROJECT: DEVELOPER: DILGP ECONOMIC DEVELOPMENT QLD SUPERINTENDENT: CALIBRE CONSULTING (QLD) PTY LTD CONTRACTOR: ALLROADS PTY LTD REF: PF-AU-INDCMT-QLD-PM-263 / Rev 1 /

2 TABLE OF CONTENTS 1 INTRODUCTION General The Development Previous Site Earthworks 1 2 WORKS AND SPECIFICATIONS 1 3 FILL FOUNDATION 2 4 COMPLIANCE TESTING Reference Density Field Density Test Locations Field Density Test Results 2 5 FILL CERTIFICATION 2 6 LIMITATIONS 3 APPENDICES Appendix A Appendix B Appendix C Test Reports Daily Site Report Sheets Drawings All appendices should be carefully read in conjunction with this report Revision 0 Page i

3 1 INTRODUCTION 1.0 GENERAL This report presents results and documentation for the inspection and testing programme on earthworks for Fitzgibbon Chase, Stage 21. SGS Australia Pty Ltd was nominated by Mr Daniel Collins of Calibre Consulting (Qld) Pty Ltd on behalf of Allroads Pty Ltd to provide earthworks inspection and testing services on a 'Level 1' basis in accordance with Clause 8.2 of AS "Guidelines on earthworks for commercial and residential developments". The purpose of the Level 1 commission and of this report is to provide a statement of compliance with the specification for the earthworks elements of the project. The testing and inspection programme was carried out in general compliance with AS 3798, the project specification and local authority testing frequency requirements as appropriate. The report references the following Australian Standards: AS 3798 Guidelines on earthworks for commercial and residential developments AS 1289 Method of testing soils for engineering purposes AS 2870 Residential slabs and footings 1.1 THE DEVELOPMENT The development comprises a 25 lot residential subdivision and associated infrastructure including sewer, stormwater, water reticulation and pavements. 1.2 PREVIOUS SITE EARTHWORKS Existing fill was encountered, or documented on this site in the area of proposed Lots It is understood that this fill was placed as controlled fill under a Level 1 commission and certified by the geotechnical testing authority Morrison Geotechnic in a report dated 08/08/11 (Reference 2706). Certification by SGS Australia Pty Ltd of the fill placed over the existing fill in the current earthworks operation is subject to and conditional upon the certification of the previous fill being accurate. SGS Australia Pty Ltd has assumed that this certification is accurate. However, SGS Australia Pty Ltd has not verified that this certification is accurate and does not warrant that it is accurate. Please contact SGS Australia Pty Ltd if you would like to discuss having SGS Australia Pty Ltd verify this certification. 2 WORKS AND SPECIFICATIONS The earthworks generally comprised of Level 1 filling of Lots 2-17 and Filling of these allotments was conducted by excavating material from the cut portion of the development. This material was imported by body trucks and spread out in layers not exceeding 200mm. At times a water truck was used to moisture condition the fill. A pad foot roller was utilized to compact the fill until the required density specification was achieved. The earthworks specification as provided, for which Level 1 certification is required, is as follows: Density: Allotment fill - 95% Standard Revision 0 Page 1

4 3 FILL FOUNDATION The stripped surfaces of proposed fill areas were inspected, tined and proof rolled prior to placement of fill. In general, the proof rolling was carried out with the equipment used to compact the fill. Compliance of the fill foundation and approval to commence filling was on the basis of: adequate removal of topsoil and organics soundness (minimum deflection) under proof rolling satisfactory exposure of previously placed fill which had been approved by the superintendent All inspection details are provided in the "Daily Site Visit Report" sheets in Appendix B. The approximate lateral extent of stripping and filling is shown on drawings in Appendix C. 4 COMPLIANCE TESTING 4.0 REFERENCE DENSITY As required by AS 3798, for unprocessed materials, a laboratory reference density test was carried out for each field density test. The Hilf Density method (AS ) was adopted for the laboratory reference test. 4.1 FIELD DENSITY TEST LOCATIONS All test locations were selected by the geotechnical inspection and testing authority (SGS Australia Pty Ltd). The locations were selected at random and staggered across the fill areas. Generally a three dimensional location was obtained for each field density test (e.g. from GPS co-ordinates provided by the contractor). However test locations were not professionally surveyed and therefore should be considered as approximate only. Test locations are described on the Field Density Test Reports presented in Appendix A. 4.2 FIELD DENSITY TEST RESULTS All field density tests carried out on structural filling on this project between 10/02/16 and 11/02/16 meet the minimum specification requirements of 95% Standard Compaction (AS , & 2.1.1). Areas represented by failed tests (if applicable) were re-compacted and re-tested prior to placement of additional filling. Detailed test results are provided in field density test reports presented in Appendix A. 5 FILL CERTIFICATION a) The fill foundation was inspected and tested and was considered to comply with the requirements of Table 5.1 of AS 3798 and the project specification to a depth of not less than 150mm. b) Based on the test results and site inspections, SGS Australia Pty Ltd concludes that the placement of structural fill on Lots 2-17 and as laterally defined in Appendix C is considered to comply with the requirements of Table 5.1 of AS 3798 and the project specification. c) All fill in the areas defined above, placed within the time frame of our inspection and testing programme between 10/02/16 and 11/02/16 is considered as "Controlled Fill" in accordance with AS 2870 (Clause ) and AS Revision 0 Page 2

5 6 LIMITATIONS Unless otherwise stated in this report, Level 1 inspection, testing and certification does not address or include the following: slope stability reactive soils soft natural soils and/or pre-existing (uncontrolled) fill on the site outside of the controlled fill area soils which may be contaminated with toxic substances backfill to service trenches and/or retaining (including boulder) walls subsequent to the controlled fill commission or when not included in the Level 1 commission the potential zone of pressure distribution and/or instability associated with adjacent excavations, underground services and retaining structures. This must be considered, as appropriate, by the footing and foundation Engineers for any future structures. site drainage topsoil placed subsequent to completion of controlled filling Certification of Level 1 controlled fill, within the area defined in Appendix C, assumes that all filling within this area during the time of our commission took place with our knowledge. Any fill placed outside the nominated earthwork operation periods without our knowledge is therefore not certified as controlled fill. The purchaser, site investigator, engineer and builder should be aware of the possibility of unstable natural soils, services and pre-existing uncontrolled fill occurring on parts of the site other than the immediate areas of controlled fill placed in the current operation (as defined in Appendix C) between 10/02/16 and 11/02/16. A full geotechnical site investigation and foundation design for the specific ground conditions should be carried out by suitably qualified and experienced personnel on each lot, prior to building when house type and location is known. This service can be provided if required, by contacting SGS Australia Pty Ltd on (07) SGS AUSTRALIA PTY LTD Prepared By: Reviewed By: G Kosanovic SGS L1R docx CL Barclay RPEQ 8846 This document is issued by the Company under its General Conditions of Service accessible at Attention is drawn to the limitation of liability, indemnification and jurisdiction issues defined therein. Any holder of this document is advised that information contained hereon reflects the Company s findings at the time of its intervention only and within the limits of Client s instructions, if any. The Company s sole responsibility is to its Client and this document does not exonerate parties to a transaction from exercising all their rights and obligations under the transaction documents. Any unauthorized alteration, forgery or falsification of the content or appearance of this document is unlawful and offenders may be prosecuted to the fullest extent of the law. Revision 0 Page 3

6 APPENDIX A Test Reports Revision 0 Page A

7 .. ABN: ph: (07) fx: (07) TEST CERTIFICATE This document is issued by the Company subject to its General Conditions of Service ( Attention is drawn to the limitations of liability, indemnification and jurisdictional issues established therein. This document is to be treated as an original within the meaning of UCP 600. Any holder of this document is to be advised that information contained hereon reflects the Company's findings at the time of its intervention only and within the limits of client's instructions, if any. The Company's sole responsibility is to its Client and this document does not exonerate parties to a transaction from exercising all their rights and obligations under the transaction documents. Any unauthorized alteration, forgery or falsification of the content or appearance of this document is unlawful and offenders may be prosecuted to the fullest extent of the law. SGS Australia Pty Ltd 1/18 Leanne Crescent Lawnton QLD /18 Leanne Crescent Lawnton QLD 4501 Client: Allroads Pty Ltd Client Job No: Order No: AR1864/0283 Project: SGS/16/005 Tested Date: 10/02/2016 Location: Fitzgibbon Chase Stage 21 - Fitzgibbon SGS Job Number: Sample No: 16-LT-231 Lab: Lawnton Sample ID: Allotment Fill Field Density Ratio (HILF) Report AS Test Number: AF 1 AF 2 AF 3 Date Tested: 10/02/ /02/ /02/2016 Time of Test: 10.00am 12.00pm 2.00pm Lot 22 Lot 24 Lot 24 Location: Easting 3765 Easting 3727 Easting 3722 Northing 2266 Northing 2266 Northing 2278 RL RL RL Depth of Test (mm): Depth of Layer (mm): Soil Description: Sandy clay Sandy clay Sandy clay Moisture Variation (%): Wet/Dry of Optimum: Drier Drier Drier Hilf Density Ratio (%): Compaction Spec (%): Field & Laboratory Data Field Wet Density (t/m³): Field Moisture Content (%) Oversize (%): Sieve Size (mm) Peak Converted Wet Density (t/m³): OMC (%) Compactive Effort: Standard Standard Standard Mould Type: A A A Test Methods: Notes: AS , AS Field testing and selection of test locations carried out in general accordance with Level 1 guidelines. Test locations were not professionally surveyed by SGS, therefore recorded locations should be considered as approximate only. Approved Signatory: (Gavin.Kosanovic, Field Activities Manager) Date: 18/02/2016 Accreditation No.: 2418 Client Address: Unit 29 8 Riverland Drive Loganholme Qld 4129 Accredited for compliance with ISO/IEC Site No.: 4984 Cert No.: 16-LT-231-S411N Form No. Page 1 of 1

8 .. ABN: ph: (07) fx: (07) TEST CERTIFICATE This document is issued by the Company subject to its General Conditions of Service ( Attention is drawn to the limitations of liability, indemnification and jurisdictional issues established therein. This document is to be treated as an original within the meaning of UCP 600. Any holder of this document is to be advised that information contained hereon reflects the Company's findings at the time of its intervention only and within the limits of client's instructions, if any. The Company's sole responsibility is to its Client and this document does not exonerate parties to a transaction from exercising all their rights and obligations under the transaction documents. Any unauthorized alteration, forgery or falsification of the content or appearance of this document is unlawful and offenders may be prosecuted to the fullest extent of the law. SGS Australia Pty Ltd 1/18 Leanne Crescent Lawnton QLD /18 Leanne Crescent Lawnton QLD 4501 Client: Allroads Pty Ltd Client Job No: Order No: AR1864/0283 Project: SGS/16/005 Tested Date: 11/02/2016 Location: Fitzgibbon Chase Stage 21 - Fitzgibbon SGS Job Number: Sample No: 16-LT-245 Lab: Lawnton Sample ID: Allotment Fill Field Density Ratio (HILF) Report AS Test Number: AF 4 AF 5 AF 6 Date Tested: 11/02/ /02/ /02/2016 Time of Test: 09:00 11:00 13:00 Lot 16 Lot 15 Lot 13 Location: Easting 3786 Easting 3779 Easting 3769 Northing 2285 Northing 2283 Northing 2284 RL RL RL Depth of Test (mm): Depth of Layer (mm): Soil Description: Gravelly clay Gravelly clay Gravelly clay Moisture Variation (%): Wet/Dry of Optimum: Drier Drier Drier Hilf Density Ratio (%): Compaction Spec (%): Field & Laboratory Data Field Wet Density (t/m³): Field Moisture Content (%) Oversize (%): Sieve Size (mm) Peak Converted Wet Density (t/m³): OMC (%) Compactive Effort: Standard Standard Standard Mould Type: A A A Test Methods: Notes: AS , AS Field testing and selection of test locations carried out in general accordance with Level 1 guidelines. Test locations were not professionally surveyed by SGS, therefore recorded locations should be considered as approximate only. Approved Signatory: (Gavin.Kosanovic, Field Activities Manager) Date: 22/02/2016 Accreditation No.: 2418 Client Address: Unit 29 8 Riverland Drive Loganholme Qld 4129 Accredited for compliance with ISO/IEC Site No.: 4984 Cert No.: 16-LT-245-S411N Form No. Page 1 of 1

9 APPENDIX B Daily Site Visit Report Sheets Revision 0 Page B

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12 APPENDIX C Drawings Revision 0 Page C

13 Approximate lateral extent of Level 1 fill (controlled filling). Controlled fill certification is limited to within this area. Unless specifically stated in the report, level 1 compaction control and certification does not address or include: backfill to service trenches and/or retaining walls (including boulder walls); and topsoil placed subsequent to completion of controlled filling. Note: Base Plan Provided by Calibre Consulting Drawing No- B TITLE JOB LOCATION Level 1 Filling Fitzgibbon Chase Stage 21 DRAWING NO. SCALE SGS/16/005C1 Scale Not Shown SGS Australia Pty Ltd 1/18 Leanne Crescent, Lawnton QLD 4501 ABN t +61 (7) f +61 (7) CLIENT Allroads Pty Ltd DATE DRAWN SIZE 29/02/16 GK A4