Geotechnical parameters required for estimating the most allowable annular tension (Pmax) in horizontal directional drilling (HDD) are sometimes empirically identified according to the final results within the standard penetration test (SPT). Inspite of some great benefits of SPT, its use in exercise might be difficult given that the geotechnical parameters https://felixjuepz.like-blogs.com/31564197/examine-this-report-on-soil-investigation-services-bangladesh