Hollow bar is versatile ground improvement product that can be used in micropile, soil nail, tie down/tie back, and other foundation anchoring and construction applications. In soil nail applications, hollow bar provides friction, shear, and tension strength in loose materials, combining all these factors to create a slide-proof wall or foundation. In micropile applications, it can be used to combat tension or compression, depending on the project’s needs. Thanks to the self-drilling hollow bar system with simultaneous grout flushing, the installation procedure can be decisively eased and shortened. The Hollow Bar serves as a drill rod. It is fitted with a lost drill bit at the top that can be adapted to different soil conditions. After each single section of bar, he subsequent bar is coupled to the previously installed segment.
