Commercial site investigation data and classification report

6. Site Classification:

Based on the field investigation carried out on the above address, and in accordance with AS2870-
2011,

This site has been classified as Class “P”, due to
    • Layers of uncontrolled clay fill > 400mm.
    • Layers of soil with an indicative bearing capacity of 50 - 100 kpa.
Based on the information attained by the site investigation, the indicative potential surface movement of
the site would be that of an “H1” Classification 40mm < Ys <= 60mm, due to the presence of highly
reactive clays in the soil profile.
    • The construction should be founded into a strata bearing capacity that is greater or equal to 100
        kpa with no underlying soft layers, or to an allowable bearing capacity as specified by a qualified
        structural engineer.

Although it must noted that this standard may not apply to a non-residential building, in which case
Design for a Commercial (non-domestic) site should be carried out by Engineering Principles.

7. Allowable Bearing Capacity (qa) :

Based on the results from the Dynamic Cone Penetrometer (DCP) and the Pocket Penetrometer (PP)
an Allowable Bearing Capacity of (100 kpa) is achievable. The structural engineer should relate the
requirements of the structure to the borelog information provided.
(*The estimate of bearing capacity determined by DCP results can be based on a paper delivered by M.J Stockwell BE,
C.ENG, MICE, “Determination of allowable bearing pressure under small structures” Journal of New Zealand Institution of
Engineers (Vol32, No. 6: 15 June 1977)).




CSI: 12186Lot5TaylorCourtCooroy

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