Collaboration & Planning in Geotechnical Investigations for HDD
See the importance of continuous communication and collaboration between the design team and the geotechnical firm during HDD projects. Test holes should be strategically placed as close to the drill path as possible, typically within 5 to 10 feet, while considering practical constraints such as avoiding fracking through the geotechnical holes. Adjustments to the original test hole plan are common, such as adding holes where needed for better stratification or eliminating unnecessary holes to save costs, especially in challenging environments like river crossings. The data from these test holes, including bore logs, are integrated directly into the project’s design profile, allowing both designers and contractors to clearly understand the subsurface conditions, ensuring accurate planning and efficient construction execution.
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