Site Visit – Soil Test Samples Taken

It’s been almost a week since we decided to proceed with the soil tests and surveys so I thought it would be a good idea to pay the site a visit. To our delight there were 5 holes drilled into various parts of the block and I took the opportunity to test the soil that were drilled up from about 1 meter into the ground – Henley works fast. To my surprise they were really hard although looking like clay. Our neighbours have class ‘M’ soil and since we’re situated in the same area I’m hoping ours would be too if not, class ‘S’ or ‘A’ would be nice. The photo on the right shows the soil that was dug up as part of the soil test at the far end of the block. Just for your reference, the below lists the soil classes:

  • Class ‘A’Little or no ground movement
  • Class ‘S’Slightly reactive sites
  • Class ‘M’Moderately reactive sites
  • Class ‘H1’Highly reactive sites
  • Class ‘H2’Highly reactive sites
  • Class ‘E’Extremely reactive sites
  • Class ‘P’Problematic sites

Based on my understanding on soil tests, samples are taken from various spots of the block and combined to obtain a composite samples suitable for nutrient or composition testing. The photo on the left shows the hole following the digging required to acquire samples for the site tests back at the laboratory. Most soil tests are carried out according to Australian standards based on Residential Slabs and Footings – Construction and Geotechnical Site Investigations. We’re not entirely sure if Henley has in-house geo-techincal engineers, our assumption is that the tests are done externally by engineering consultant firms like STA Consulting Engineers. Nevertheless, the AS codes are as below for your reference:

  • AS2870-2011
  • AS 1726-1993

As of now we’re hoping that ours would be class ‘M’ to keep site costs down as low as they can be. I wonder what the soil pH levels are? and if there is aluminum and manganese toxicity which would affect landscaping plant choices.

This entry was posted in Lot 1112, Milestones, September 6th, 2012, Soil Tests & Survey, The Range. Bookmark the permalink.

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