Instant Foundation® System
Typical applications are deepened foundation anchors for new construction and stabilizing/lifting repairs of existing foundations. Compression loads and soil conditions dictate the Chance anchor solution. In many soils, the steel anchors alone provide the needed performance. Only where soils are near “impossible,” do Chance anchors and grout need to be combined.
HELICAL PIER® Foundation Systems anchors are designed for installation ease and to maximize load capacity of each helix. This method is effective in soil conditions which support the steel anchor shafts against buckling.
HELICAL PULLDOWN™ Micropiles anchors are designed for weak surface soil conditions. For higher loads such as commercial and industrial construction or expansion applications, these micropiles incorporate a grout column around the steel anchor shafts for added lateral support. Displacement plates added at extension joints form a void in the soil filled by a grout reservoir on grade as the anchor is torqued into the soil. Column may be sleeved during installation if required.
For retrofit applications brackets are placed at intervals around the building. Anchor bolts hold brackets to the footing. HELICAL PIER® Foundation Systems anchors install through the brackets. Special tool permits hydraulic jacks to transfer load to brackets and foundation anchors. Nuts on each brackets\' two vertical bolts lock off load before the jack is removed.
For new construction applications anchors install at intervals between footing forms. Connections may be by steel fabricated brackets or integration into rebar gridwork prior to pouring concrete.
For seismic/uplift restraint, a patented special bracket may be added atop HELICAL PIER® Foundation Systems remedial brackets and attached to foundation wall. In seismic areas, apply at ends of a shearwall. In expansive soils,place around the perimeter.
For repairing foundation walls and slabs, special brackets work with crossplate or screw anchors.