Stop the damage with HELICAL PIER Foundation Systems
When such conditions exist, drilled and grouted micropiles offer a cost-effective, deep foundation option capable of penetrating obstructions to bear within competent bedrock. In compression applications, capacity is achieved through end bearing and also skin friction along the interface of the grout column and the bedrock. In tension applications, only the skin friction contributes to the micropile capacity
Micropiles are small diameter drilled and grouted friction piles. Each pile includes steel elements that are bonded into the bearing soil or rock – usually with cement grout. The bearing stratum is logged during installation drilling to assure that bearing capacity is adequate. Micropiles do not rely on end-bearing capacity, so there is no need to establish the competency of rock beyond bond-depth. They can be installed quickly in virtually every type of ground using highly adaptable mobile drilling equipment.
Hollow bar anchors are manufactured from high yield micro alloy steel tubing. Hollow bars are installed using the injection bored method, which involves pumping at pressure a cementious grout while the anchor is drilled into the grout. This method has many geotechnical benefits and it improves a project’s overall efficiency.