approval

Noosa Council documents




            INTRODUCTION

            SCG Consulting Engineers have been commissioned to provide a Slope Stability Assessment for the above
            allotment. The assessment considers only the existing state of the allotment and any possible effects that the
            proposed works will have on this site.

            The proposed works are detailed by Kidd & Co Designers in plans 1802 drawings SD.101 thru to SD.602 dated
            February 2020 and consists of multi level units with basement carparking.


            SITE DESCRIPTION

            A desk top study of the site confirms the following:-

                -   The site is located within an area on the Noosa Council’s Landslip Hazard Map 1.3 (5 November 2010).

                -   Reference to the Australian Geological Map 1:100000 Gympie Special confirms the site is located within
                    the Pleistocene Dune of the late Quaternary period, consisting of Quartz Sand.

                -   Reference to Sunmap 1:25000 topographic maps confirm the site is located on the Sunshine Beach
                    Primary Dune.

                -   Level contours provided on the proposed building plans indicate an average fall across the site of 5-10%.
                    Maximum grades in the order of 20º occur outside the eastern boundary of the site within the road reserve.

            The soil profile for the site consists of the following –

                                           :   LOOSE SILTY SANDS INCREASING IN DENSITY WITH DEPTH

            Our walkover confirmed the following characteristics-

            Site Slope                     :   A visual assessment of the surface grades within the allotment using a hand held
                                               inclometer suggests grades in the order of 5-10% exist across the proposed
                                               construction site. The surface grades within the road reserve increase to 20%. The
                                               measured grades are consistent with the contours indicated on the proposed
                                               construction plans.

            Vegetations                    :   Vegetation consists of grasses and scattered trees.

            Drainage                       :   The surface drainage is good, sub-surface drainage is good.         There was no
                                               indication of ground water seepage or rising water pressure.

            Earthworks                     :   Several building platforms exist across the site.

            Adjacent Structures            :   Adjacent structures on the neighbouring properties appear to consist of slab on
                                               ground construction.

            Evidence of previous           :
            Soil Movements                     None evident.


            LANDSLIP MECHANISMS

            Landslip is generally defined as the movement of a mass of rock or soil down a slope.

            It is generally considered to occur when the strength of the soil or rock mass to support itself is exceeded causing
            movement to occur within the mass.




                SCG Consulting Engineers                                    2                                 SCG Ref: 30206(SL)
Document Set ID: 21313327
                  21300072
Version: 2,
         1, Version Date: 08/12/2020
                          19/11/2020                                                                     Print Date: 8 December 2020, 2:48 PM