Geotechnical parameters demanded for estimating the most allowable annular force (Pmax) in horizontal directional drilling (HDD) are sometimes empirically decided according to the final results through the standard penetration take a look at (SPT). Regardless of the benefits of SPT, its use in apply might be challenging given that the https://paxtonfpalu.wizzardsblog.com/31657895/soil-testing-and-investigation-bd-things-to-know-before-you-buy