David Willoughby

Geotechnical Considerations for Successful HDD Projects- Testing and Budgeting in Geotechnical Operations

Ensuring Qualified Geotechnical Investigations for HDD

It's crucial that the firm understands HDD-specific requirements, as standard geotechnical procedures for other types of construction, like bridges, may not provide the necessary data for HDD. To ensure accurate and relevant results, project teams should provide the geotechnical firm with a detailed specification—typically 2 to 3 pages—outlining where to conduct the test holes, how to lay them out, and which ASTM standard tests to perform. This helps ensure the soil's behavior during drilling is properly assessed, giving a clear understanding of what to expect along the bore path.
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