Geotechnical parameters required for estimating the maximum allowable annular strain (Pmax) in horizontal directional drilling (HDD) are frequently empirically decided depending on the effects from your standard penetration test (SPT). Despite the key benefits of SPT, its use in practice might be difficult as the geotechnical parameters decided based on https://beaurcnyh.blog2news.com/32267500/soil-testing-and-investigation-bd-options