Earth Drill Type Enlarged Base Pile Method "HND Method"

By systematizing the construction management device, we will ensure the reliable execution of expanded shapes and hole bottom treatment!

The "HND method" is a construction technique that involves using an earth drill excavator's drilling bucket to excavate the shaft of a pile to a specified depth in the bearing layer, and then using a bell-shaped bucket to expand the excavation in a conical shape, creating a cast-in-place concrete pile with a larger tip area. As a result, it achieves bearing capacity equivalent to that of a straight pile, and compared to straight piles with the same load-bearing capacity, it significantly reduces the amount of excavated soil and concrete, allowing for not only a shortened construction period but also cost savings. 【Features】 ■ By using a belled pile, equivalent bearing capacity can be achieved even with a smaller shaft diameter. ■ Reduction in concrete volume and excavated soil volume. ■ Reduced environmental impact. *For more details, please download the PDF or feel free to contact us.

Pile and foundation workGround foundation construction method