Borehole Logging and Soil Classification

Borehole Logging And Soil Classification Services

A.D. Envirotech undertakes borehole logging and soil classification on exploratory works to identify the substrata or stratigraphy of the soil onsite. A.D. Envirotech can offer our own drilling team and geotechnical engineers to provide a streamlined procedure to ensure that results will be accurate and streamline the preparation of results.


ADE consultants are experienced in:


  • Classifying soil types onsite
  • Giving a general strength of the material
  • Logging the material to a profession accepted standard.


We are accredited to perform:


  • Determination of Liquid Limit (LL) of soil – AS1289.3.1.1/AS1289.3.1.2 or RMS T108
  • Determination of Plastic Limit (PL) of soil – AS1289.3.2.1 or RMS T109
  • Determination of Plasticity Index (PI) of soil – AS1289.3.3.2 or RMS T109
  • Determination of Linear Shrinkage (LS) of soil – AS1289.3.4.1 or RMS T113


These tests are used to determine the reactivity of the soil. This is significant as a reactive material may swell after heavy rainfall events or contract during drought periods. Establishing the potential reactivity of soil is therefore important to determine what type of footings/slabs to use, as well as to ascertain whether any ground improvement is necessary prior to construction of superstructures. If the reactivity of the material was not previously classified, an inappropriate footing/slab may be used, causing damage to the foundations or the structure itself.


Accredited Testing


The listed accredited testings (above) are different assessments that are all used collectively to determine the reactivity of soil. Generally, the higher the value given by the Plasticity Index, the higher the clay content within the soil and thus, the more reactive the soil is. Hence, a lower PI would indicate a siltier material while a PI of 0 signifies that the material is non-plastic.

Linear Shrinkage is used to determine how much a material will shrink or contract based on oven drying conditions which is intended to simulate drought conditions. Based on these results, ADE is able to determine (as a percentage), the potential shrinkage that would occur within these conditions.