Slope Stability AG-220616-RPT-G-01_[Rev A]

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                                                                                                        arcosgroup.com.au
                                                                                       Sunshine Coast | Brisbane | Gold Coast




 Plumbing and services must also not be allowed to leak and regular maintenance and inspections should be
  undertaken.
 Erosion protection of cut and fill betters will be required. Batters should incorporate crest and toe drainage. Batters
  should be vegetated appropriately to minimise erosion.
 Overland flow paths will need to be carefully directed to approved outlets to minimise erosion possibility.

8         GEOTECHNICAL RECOMMENCDATIONS
The following sections details specific geotechnical constraints or recommendations in addition to general hillside
construction notes.


8.1       FOOTINGS
In accordance with industry standards, a geotechnical engineer from Arcos should undertake the testing within the
footings to confirm that the encountered material is in alignment with the adopted parameters and assumptions
provided within this report. Where this does not occur, Arcos cannot be held liable for any of the information presented
within this report.
All footings will need to be designed to accommodate potential ground surface movement, settlement values and
any additional settlement values associated with the placement of new fill.
Settlement for suitably sized and designed high level footings should be in the order of 1-2% of the width of the
footing.
If footings are located adjacent to an underground service or other obstruction that is not homogenous with the
founding strata, the footing should be extended a minimum 0.3 m below an imaginary line projected at a 45 degree
angle from the lowest point of the service/obstruction. This is depicted graphically for reference:




The ultimate geotechnical end bearing and shaft adhesion parameters are presented in Table 2. The values given
will need to reduced by applying a suitable geotechnical strength reduction factor (Φg) for limit state or divided by a
suitable factor of safety for working stress methods. The Φg should be selected by the designer.
Based on the conditions encountered, bored piles would be considered suitable.




Sunshine Coast | Brisbane | Gold Coast