There is no fixed number based on acreage alone. Borehole requirements depend on the warehouse footprint, structural loads, foundation design, ground conditions and geological risks such as soft soil or limestone cavities.

A typical building site investigation may take around 2–4 weeks, including mobilisation, fieldwork, laboratory testing, interpretation and report preparation. Larger or more complex sites may take longer.

It depends on the project, local authority and submission requirements. Some developments require geotechnical or soil investigation documentation as part of the technical submission, particularly for significant foundations, earthworks or challenging ground conditions.

A resistivity survey uses geophysical methods to identify subsurface variations and possible anomalies, while borehole investigation directly samples and tests the ground. They can be used together, particularly for sites with potentially complex geology

Professional geological work must be undertaken by an appropriately registered Professional Geologist (P. Geol.) in accordance with Malaysia's Geologists Act 2008 and applicable professional requirements. Geotechnical engineering design and certification may require a suitably registered Professional Engineer.

Limestone cavities can be investigated using a combination of boreholes, rock coring and geophysical surveys such as electrical resistivity imaging. Additional targeted boreholes may be required to confirm suspected cavities before finalising piling decisions.

Yes. Geotechnica Sdn Bhd is a Malaysian geotechnical engineering and geology company providing soil investigation, geophysical surveys, geological assessment and related services. The company states that it is CIDB/MOF registered and serves projects across Malaysia.