Slope Stability Report · EXE22/0013

7.0 COMMENT & RECOMMENDATIONS

The area of the proposed structure has been defined as Low Risk providing the following
recommendations are implemented, managed and maintained for the expected life of the structure
:‐
7.1 House Design

As indicated by the client, the proposed development is to involve the construction of a new
residential dwelling on the established residential type property. The proposed construction is
intended to replace the existing residence and be positioned as per the attached siting plan (refer
appendix D) with a nominated off‐set distance of between 6.0 metres and 6.021 metres from the
front Eastern boundary, 2.450 metres from the Southern side boundary, between 1.555 metres and
2.591 metres from the rear Western boundary. The construction is to comprise of a double storey
dwelling with a timber floor on bearers and joists to the upper level supported by slab on ground to
the lower floor. The external finish is to comprise of selected cladding with a sheet metal roof. A
inground swimming pool and water tank are also proposed. These structures are to be positioned to
the North Western aspect of the block, adjacent to the proposed residence. New retaining walls and
a masonry block wall fence are to be included as part of the required landscaping.

Earthworks are to involve the demolition and removal of the existing dwelling and associated
structures including retaining walls located to the rear of the block. With a nominated platform level
of R.L 17.8 AHD, it is understood that only a site scrap will be required to achieve desired ground
levels.

       STA Consulting Engineers are satisfied that a construction type as described above is
        considered suitable for this site providing the following recommendations outlined are
        implemented and maintained for the life of the structure.

7.2 Earthworks

       Retain the existing natural contours wherever possible.
       Where the removal of trees and/or existing structures is undertaken the voids created by
        their removal, must be over excavated, back filled and compacted with suitable material.
       All earthworks to be carried out in accordance with the requirements of Australian Standard
        AS 3798 Guidelines on Earthworks for Commercial and Residential Developments.

Cuts – Existing/ Proposed

       Support all cut batters with suitably designed retaining walls. Replace all existing walls that
        show signs of stress or deterioration.
       Drainage measures MUST be installed immediately up slope and behind all cut batters
        including those retained to capture both surface and subsurface water movements and divert
        waters to a suitable, controlled outflow below and clear of the building envelope. All drains
        must be maintained for the life of the structure.
       No excavation is to be undertaken within the zone of influence of any existing structure on or
        adjoining the site (including retaining walls, sewer and storm water infrastructure etc..) unless
        it can be shown that measures have been implemented to protect the stability of these
        structures during and after construction. This should be determined by the design engineer.