Top Paddock Stage 7 Ascot Earthworks Supervision Report for Yourland Developments Report 17C 0704 Jan, 2018 Top Paddock Stage 7 Ascot Earthworks Supervision Report for Yourland Developments Revision Revision Date Authorised 17C 0704 10/1/18 SEH Distribution (this revision only) Recipient Format Date GTSS On file 10/1/18 Yourland Developments Email PDF Contact: Scott Blair [email protected] 10/1/18 Sandhurst Geotech Pty Ltd, Trading as Geotechnical Testing Services – Southern. ABN: 18 169 924 109 ACN: 169 924 109 Email: [email protected]; Ph: 03 5441 4881; Fax: 03 5441 5089; Mail Address: PO Box 13, STRATHDALE, Vic, 3550 Offices: La Trobe University Applied Science 2 Building 7 Sharon Street, Flora Hill, VIC 3550; Shed 3, 140 Ogilvie Avenue, Echuca , VIC 3654, Geotechnical Investigations Contract Drilling Land Capability Assessments Contamination Assessments Compaction Control Testing On-site Wastewater Management Site Classifications Residential and Industrial Soil, Concrete and Aggregate Testing Laboratories Site Laboratory Construction Material Testing Services www.geotestsouthern.com.au TABLE OF CONTENTS 1 INTRODUCTION ......................................................................................................... 4 2 SCOPE OF WORKS .................................................................................................... 4 2.1 AREA OF WORK .................................................................................................. 4 2.2 PLACEMENT SPECIFICATION ........................................................................... 4 3 INSPECTION AND TESTING ...................................................................................... 5 4 SUMMARY OF TEST RESULTS ................................................................................. 5 5 STATEMENT OF COMPLIANCE ................................................................................ 6 APPENDIX Site Plan Test Reports Geotechnical Testing Services – Southern Page 3 Report: 17C 0704 Report 1 INTRODUCTION Yourland Developments commissioned Geotechnical Testing Services (GTS) to undertake Level 1 Supervision and testing (AS3798-2007) for the earthworks at the Top Paddock Estate Stage 7, Ascot. Level 1 Testing was generally performed in line with AS3798-2007 “Guidelines on Earthworks for Commercial and Residential Development” and provides inspection of the construction of controlled fill and compaction testing in accordance with AS1289 “Methods of Testing Soils for Engineering Purposes”. The Level 1 testing was undertaken by Geotechnicians with supervision provided by a Geotechnical Engineer from GTS. 2 SCOPE OF WORKS 2.1 AREA OF WORK Geotechnical Testing Services provided Level 1 inspection and testing of the engineered fill placed across Lots 701 to 726. The depth of fill across the site varied from 300mm to around 800mm with the approximate locations shown on the attached site plan. 2.2 PLACEMENT SPECIFICATION Whilst there was no earthworks specification compiled for this project, the placement of the fill and associated works generally followed the recommendations outlined in AS3798-2007 “Guidelines for Earthworks for Commercial and Residential Developments” and the construction specification. In summary, the earthworks comply with the following: The layers for residential lots are to be compacted to at least 95% of the density ratio in accordance with AS1289 5.1.1 (or 5.7.1), based on Standard compaction. In accordance with Table 8.1 of AS3798-2007, the site would be considered large scale (greater than 1500m2) and therefore a minimum of 1 test per 2500m2 or 3 tests per visit are required. It is noted that under this scale, not every lot requires testing, however, the testing was generally conducted so that each lot was tested at some stage. Geotechnical Testing Services (Southern) Report: 17C 0704 Report Page 4 3 INSPECTION AND TESTING Inspection of the excavated base was conducted by a Senior Geotechnical Engineer and it was observed that the unsuitable material (vegetation, top soil/silt) had been removed with the base consisting of a Sandy Clay material of good strength. Level 1 inspection and testing was undertaken by a geotechnician from GTS who nominated the timing and location of the in-situ density tests. The approximate location of each test is recorded on the test reports and attached fill plan. Laboratory compaction testing was undertaken on a one to one basis at our Bendigo laboratory. A summary of the results of the compaction control testing is presented in a table below with the full NATA endorsed test reports included in the Appendix. 4 SUMMARY OF TEST RESULTS A summary of the test results is included in the following table with full NATA accredited reports included in the Appendix. It is noted that following the initial lot of testing in February, the allotments were adjusted from Stage 14 to Stage 7, hence the new lot numbers are included in the table below with the original numbers that are on the test reports in brackets. Reduced Moisture Hilf Project No. Report No. Test Date. Location. Level Variation Density (mm) %O.M.C Ratio % 1 17B 0129A 16/2/17 Lot 726 (1411) 300 4.0 dry 98.5 2 17B 0129B 16/2/17 Lot 722 (1414) 300 4.0 dry 102.0 3 17B 0129C 16/2/17 Lot 717 (1418) 300 4.5 dry 101.0 4 17B 0129D 16/2/17 Lot 708 (1402) 300 0.0 99.5 5 17B 0129E 16/2/17 Lot 706 (1404) 300 1.5 dry 106.5 6 17B 0129F 16/2/17 Lot 704 (1406) 300 2.5 dry 107.5 7 17B 0129G 16/2/17 Lot 703 (1408) 300 1.5 dry 104.5 8 17B 0129H 16/2/17 Lot 701 (1410) 300 1.0 dry 103.0 9 17B 0799A 28/6/17 Lot 718 300 0.5 wet 99.0 10 17B 0799B 28/6/17 Lot 720 300 0.0 100.5 11 17B 0799C 28/6/17 Lot 723 300 2.0 dry 101.5 12 17B 0819A 30/6/17 Lot 721 250 1.5 dry 97.5 13 17B 0819B 30/6/17 Lot 725 250 0.5 wet 102.5 14 17B 0819C 30/6/17 Lot 712 250 2.0 dry 101.5 15 17B 0885A 13/7/17 Lot 701 FSL 2.0 dry 100.5 16 17B 0885B 13/7/17 Lot 703 FSL 0.5 wet 101.0 Geotechnical Testing Services (Southern) Report: 17C 0704 Report Page 5 Reduced Moisture Hilf Project No. Report No. Test Date. Location. Level Variation Density (mm) %O.M.C Ratio % 17 17B 0885C 13/7/17 Lot 705 FSL 1.5 dry 102.5 18 17B 0885D 13/7/17 Lot 707 FSL 0.0 98.5 19 17B 0885E 13/7/17 Lot 709 FSL 0.0 102.0 20 17B 0885F 13/7/17 Lot 718 FSL 0.5 wet 97.0 21 17B 0885G 13/7/17 Lot 720 FSL 0.5 wet 103.0 22 17B 0885H 13/7/17 Lot 724 FSL 1.0 wet 101.0 23 B17-284C 20/9/17 Lot 711 FSL 2.0 dry 109.0 24 B17-284D 20/9/17 Lot 715 FSL 0.0 104.0 25 B17-300A 22/9/17 Lot 725 FSL 0.5 dry 102.0 5 STATEMENT OF COMPLIANCE GTS personnel have provided Level 1 inspection and testing services during the placement of material for the filling of Lots 701 to 726. The placement of fill and construction techniques adopted was observed throughout the project. Based on observations made by GTS personnel and the results of field and laboratory tests, we consider that the fill has been placed and compacted and is considered to be engineered or controlled fill. Therefore, subject to residential site classifications, the controlled fill material is deemed a suitable founding medium for future residential buildings. It is noted that top soil material may be spread across the sites following completion of these earthworks and that this top soil material is not considered controlled fill. Shane Hampton (BE (Hons)) Senior Geotechnical Engineer Telephone: (03) 5441 4881 Mobile: 0437 496 215 Email: [email protected] Geotechnical Testing Services (Southern) Report: 17C 0704 Report Page 6 APPENDIX Geotechnical Testing Services (Southern) Report: 17C 0704 Report Page 7 15 8 1 25 13 16 7 11 22 6 2 17 12 5 21 10 9 20 18 3 24 4 19 14 23 Fig 1: Site Plan Geotechnical Testing Services – Southern Page 8 Report: 17C 0704 Report R53 Version: 02 April 2016 COMPACTION ASSESSMENT Nuclear Gauge Method Hilf (Wet) Density Ratio TEST REPORT: Client: YourLand Developments Report Nº: 17B0129 57 Queen Street Revision Nº: REV 0 BENDIGO Sheet: 1 of 4 VICTORIA 3350 Date of Report: 21/02/2017 Project: Top Paddock, Ascot Location: House Blocks Test Request No / Lot No: * Layer Thickness: (mm) 300mm Depth Below FSL/CSL: 300mm Compaction Type: Standard Date Sampled: 16/02/2017 Sampling Method: AS1289.1.2.1 part 6.4b Material Description: 17B0129 /A Silty Clay Brown 17B0129 /B Silty Clay Brown 17B0129 /C Silty Clay Brown 17B0129 /D Silty Sandy Clay Brown 17B0129 /E Silty Sandy Clay Brown 17B0129 /F Silty Gravelly Clay Brown Material Stabilised: No If Stabilised Time from * Stabilisation to Lab Test: Test Number: 17B0129A 17B0129B 17B0129C 17B0129D 17B0129E 17B0129F Hilf Density Ratio (%): 98.5 102.0 101.0 99.5 106.5 107.5 As Per: AS1289 5.7.1 5.8.1 Approved Signatory: B.P.Mott Print Date: 21/02/2017. The controlled version of this document is on the Sandhurst Geotech P/L computer. This document is only controlled for the date shown on the bottom of the page. R53 Version: 02 April 2016 COMPACTION ASSESSMENT Nuclear Gauge Method Hilf (Wet) Density Ratio TEST REPORT: Client: YourLand Developments Report Nº: 17B0129 57 Queen Street Revision Nº: REV 0 BENDIGO Sheet: 2 of 4 VICTORIA 3350 Date of Report: 21/02/2017 Test Number: 17B0129A 17B0129B 17B0129C 17B0129D 17B0129E 17B0129F Project Test Number: ****** Time of Test: 11.15am 11.21am 11.28am 11.34am 11.41am 11.47am Probe Depth: (mm) 300 300 300 300 300 300 Chainage: Lot 1411 Lot 1414 Lot 1418 Lot 1402 Lot 1404 Lot 1406 Reduced Level: (mm) 300.0 300.0 300.0 300.0 300.0 300.0 Offset / Centre Line: Refer to Map Refer to Map Refer to Map Refer to Map Refer to Map Refer to Map #Eastings: 55H26 1152 1148 1139 1084 1081 1091 #Northings: 593 5627 5607 5575 5525 5543 5565 Percentage Oversize Wet: 0.0 0.0 0.0 0.0 0.0 0.0 Oversize Sieve Size: (mm) 19 19 19 19 19 19 Field Wet Density: t/m3 2.04 2.05 2.04 2.17 2.26 2.25 Peak Conv.