06/0159 - Op Works - landscaping, Driveway and Stormwater [As Published] · 142006.159

15/12/2005 10:47 61-7-54441158 RIENMAG PTY LTD SCST PAGE @2

SUNSHINE COAST OFFICE:
q Fi ENMAC PTY LTD SUITE 5, FIRST FLOOR.
h LN. CNA, ELANORA DA. & BRISSANE AD..

MOOLOOLABA, OLD. 4537
TELEPHONE: (074) 782 500

W. RIENECKER BE :
PCRIENEGRER BE ME. fost GNI. AND STRUCTURAL robe
MOOLOOLABA, OLD. 4557
11 September 1998
Middap & Ditchfield Architects Pty Ltd
Cnr Mary & Thomas Strect

NOOSAVILLE QLD 4566

 

At your request, a limited foundation investigation wes carried out on the above site. The purpose of
the investigation was to determine the suitability of the site for the proposed development and to
give recommendations for a foundation system.

The fieldwork was carried out on the 6 August, 1998, Assessment was based on a visual inspection
of the site and adjoining land and the materials encountered in three holes drilled with a 75mm
diameter mechanical auger. Dynamic Cone Penetrometer testing was also carried out beside each
test hole to determine the relative density of the materials.

Disturbed samples were taken at various levels, classified in the field and retumed to the laboratory.
The locations of the Test Holes are shown on the attached site plan. The materials encountered are
presented in the form of Borelogs attached to this report.

The soil profile generally consisted of fill material to a depth of 900mm overlying a topsoil sandy
clay layer approximately 300mm thick. These materials were overlying sands, sandy clays and
clayey sands of variable strength. A weakly cemented layer 300mm thick was encountered at a
depth of approximately 2.7m. The sands beneath this layer were loose and saturated with significant
clay/silt percentages, Each test hole was terminated at approximately 5.8m with test hole 2 and 3
terminating in a firm sandy clay.

This area is known to be underlain by alluvial/marine sediments which may undergo significant
consolidation under load. When the existing buildings have been demolished from the site, we
tecommend additional soils investigation be undertaken to determine the consolidation
charactieristics of the soils and to confirm the soil profile across the site. Based on the preliminary
investigation we consider a suitable foundation system would consist of a raft system or piles. The
founding depth for the piles would be greater than the 5.8m depth of this investigation as the weakly
cemented jayer at 0.3m thick would be too thin to confidently support the ptle load.

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GOLD COAST OFFICE: SANTA CRUZ HOUSE, 2/86-80 SANTA CRUZ BLVD., ISLAND QUAYS, QLD. 4226
TELRPHONE: (075) 785 722 FAX: (075) 720 425