Soil boring test requirements and borehole spacing for buildings

Engineering Institute of Thailand (EIT) guidelines for soil boring test borehole count and spacing based on building footprint size.

Geotechnical soil test rig performing borehole sampling
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Soil test borehole spacing rules

Standard sites require min 1-2 soil test boreholes for areas under 500 sq.m., adding boreholes at 30-50m grid intervals.

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