01.1 - Geotechnical Report · OPW18/0008

HRDESIGNGROUP

Cromar Winning Consulting Engineers Pty LTD T/A
ABN30 169 626 957 DESIGN @ROUP

Office: Suite 8, 137 Brisbane Road, Mooloolaba QLD 4557
Postal: PO Box 7117, Sippy Downs, QLD 4556
Phone: (07) 5444 5578

 

 

 

 

 

Email: [email protected]

Web: www.hrdesigngroup.com.au

Client: Ryan Designer Homes

Job Number: 17-0417

Site: Lot 120 Seamount and Mermaid Quays, Noosa Waters
Date Investigated: 42" July 2017

1.0 INTRODUCTION

The purpose of this report is to classify the residential site identified above, in accordance with AS2870-2011 -
"Residential Slabs and Footings".

Boreholes have been drilled in the area of the proposed development to obtain a sample, representative of the surface
and sub-surface soil strata for laboratory testing and evaluation of characteristic surface movement.
2.0 SITE DESCRIPTION

See the attached report No.11481 by “CSI: Construction Site Investigations”.

3.0 SITE SKETCH

See the attached.

4.0 SOIL PROFILE

Two (2) boreholes were drilled in the proposed building envelope, positions shown on attached site sketch. The soil
profiles are as shown on the attached borelogs by “CSI: Construction Site Investigations’.

No water table was encountered during site investigation.

The site was found to be filled to 1900mm below test surface level. After examining the fill on site and the results of
investigation, it is apparent that an attempt was made to compact the fill under controlled conditions. However as
certification is not available to define this fill as “Controlled Fill", we are required by AS2870 to classify this site as
Class 'P’.

5.0 SITE CLASSIFICATION

Based on the soil profiles encountered during site investigation, and the results of field and laboratory testing, the
natural classification of this site is Class 'S'.

However, due to the presence of uncontrolled fill which currently exists on this site, we are required by AS2870 to
classify this site as Class ‘P’.

§.1 Effect Of Earthworks On Site Classification
This site classification is based on the soil profile encountered. The extent of further earthworks is unknown.

The classification must be reconsidered if the depth of cut varies by more than 300mm or the depth of fill varies by
300mm or exceeds the limits provided in Clauses 2.5.3 and 6.4.2 of AS2870-2011

 

HRDESIGNGROUP Reference No: 17-0417 Page 7 of 5