Geotechnical Investigation

                               PROPOSED CALILE HOTEL NOOSA DEVELOPMENT
                               3 – 7 SERENITY CLOSE, NOOSA HEADS




Text Figure 14: Slope/W output for long term conditions – Case 4

Results of the analyses indicate the following:

       Case 1 – Our analysis indicates that the upslope side of the west wing would achieve at least the
        required minimum FOS for long-term stability (i.e. 1.5), subject to permanent retention of the
        proposed cuts using engineer designed and certified structures.

       Case 2 – Our analysis indicates that the downslope side of the west wing could achieve an
        acceptable FOS of 1.7 for long-term stability, provided the proposed new retaining wall is supported
        on piles at least 3 m deep, with a minimum shear force resistance of 50 kN/m (unfactored).

       Case 3 – Our analysis indicates that the upslope side of the east wing would achieve at least the
        required minimum FOS for long-term stability (i.e. 1.5), subject to permanent retention of the
        proposed cuts using engineer designed and certified structures.

       Case 4 – Our analysis indicates that the downslope side of the east wing would achieve at least the
        required minimum FOS for long-term stability (i.e. 1.5), provided all structures are founded in
        accordance with Section 6.3.2.


Please note no building loads have been applied to the proposed retaining walls, with all loads transferred by
footings below the zone of influence. This analysis does not address global or internal stability for any
retaining walls that are proposed, which were modelled as high strength structures. As required under
Australian Standard AS4678-2002 Earth-retaining structures, global stability of retaining walls must be
assessed by the wall designer as part of the detailed design process.




7 October 2022
Report No. 22239-001-Rev0                                 13