Geotechnical Stability Assessment · MCU19/0008

Project No. PG-2096                                                                                                         Page | 10
April 2019
Ref: PG-2096, 2019-02-21, GR VER 2
Andrew and Michelle Douglas – Geotechnical Stability Assessment - Proposed Residence, 22 Arakoon Crescent, Sunshine Beach




10.0 STABILITY EVALUATION

    10.1 General

The overall stability evaluation of the proposed building site has been carried out on
a broadscale basis by visual inspection and from the subsoil information from the
boreholes undertaken.

No signs of mass/global instability were noted across the proposed development
sites during the field assessments.

Building Type

The proposed structure is to comprise of a rigid/blockwork undercroft structure with
lightweight, flexible structure over the remainder of the site. Ground floor
construction should be designed as fully suspended.

Retaining Walls

Structural retaining walls will be required to support the excavations. The walls
should be structurally designed in accordance with the recommendations outlined
in Section 8.0 of this report. in the fill platform are not recommended for the site.

11.0 RESTRICTIONS/PRECAUTIONS

    11.1 General

Good hillside engineering construction practice is considered mandatory during
development of the site for the proposed new residence. The notes and illustrations
attached to this report outline some typical hillside construction guidelines including,
earthworks, erosion control and drainage practices for hillside areas which should be
taken into account as applicable.

Furthermore, in order to ensure long-term stability of the site upon development, the
following restrictions/precautions should also be taken into account.

    11.2 Construction Recommendations

The proposed residence would be suited to a structure either on posts or a slab on
ground with a fully suspended floor, where not supported by a structural retention
system. This type of construction would reduce the amount of earthworks necessary
to prepare a building platform and the extent of retaining systems required across
the site of the proposed house.

Retaining structures should be designed by an experienced Structural Engineer.