Appendix D Geotechnical report · MCU18/0013

Project No. 304-2014
November, 2004 Page 5

 

6.0

ENGINEERING ASSESSMENT

 

6.1 Traffickability and Site Preparation

At the time of the field investigation, the site was only accessible (by vehicle) using the

existing access track which crosses the site diagonally from the street frontage.

Traffickability problems may be further exacerbated with the disturbance of the upper

level soil fabric with removal of vegetation.

It is recommended that after stripping, clearing and grubbing, the exposed surface in the
construction area be proof rolled and compacted to improve traffickability., although it is
noted that this would only apply to the lower parts of the site where excavation is minimal.

Maintaining adequate surface drainage conditions is essential to ensure that runoff is

diverted away from the construction area to prevent erosion.

The contractor should fully inform himself of the ground conditions, on site, prior to
commencement of earthworks. This requirement should be explicit in any earthworks

specifications or contract.

6.2. Earthworks

6.2.1 General

It is understood that the proposed earthworks will consist of cuts of up to 6.0 meters to

establish the proposed building platform.

Earthwork procedures should be carried out in a responsible manner in accordance with
AS.3798-1996 “Guidelines on Earthworks for Commercial and Residential

Developments".
6.2.2. Subgrade Preparation

Subgrade preparation procedures should include the following:-

* Clearing, stripping and grubbing should be carried out in areas subject to
earthworks. Also all soils containing organic matter should be stripped from the
construction area; this material is not considered suitable for use as structural fill.

* Depressions formed by the removal of vegetation, existing structures, underground
elements etc. should have all disturbed weakened soil cleaned out and be backfilled

with compacted select material.

 

#F SOIL SURVEYS ENGINEERING