|GEOPIER® GP3® System Rammed Aggregate Pier® (RAP)||Helitech®‘s Direct Displacement System – VSCs||Potential Project Impact|
|Design Quality Assurance||An individually licensed designer will provide an initial and final design for the GEOPIER® system. Their review process is completed by affiliated firms.||Helitech® utilizes an independent engineering firm to peer review Helitech®‘s designs and then sign and seal these design-build solutions.||Quality|
|System Spoils||Licensed GEOPIER® installers will employ a “Drill and Fill” method when using the GP3® System. This method will produce significant spoils that will need to be handled and hauled away.||Helitech®‘s Direct Displacement System (DDS), minimizes spoils. DDS is a great approach where contaminated soils may exist.||Cost & Schedule|
|Installation Approach||Using a “Drill and Fill” approach with the GP3® System, the licensed GEOPIER® installers will need to perform multiple procedures on each hole, potentially extending duration onsite.||Helitech® touches the hole only once using the DDS approach, potentially shortening the duration onsite. This method also densifies the in situ granular soils between the Aggregate Piers.||Schedule & Quality|
|Installation Pad||N/A||Since Helitech®‘s DDS minimizes spoils, Helitech® will allow access to the working pad while still installing piers. This access may improve the construction schedule.||Cost & Schedule|
|Installation Quality Assurance||GEOPIER® provided specifications for Rammed Aggregate Pier® (RAP) require that the owner or contractor hire an onsite Control Technician to report on installation.||Each of Helitech®‘s installation rigs is equipped with the latest data logging computer monitoring system, thus Control Technician requirement may be waived.||Schedule & Quality|
CNC Foundations builds value into your construction project. We employ a full-time engineering staff and support personnel who enable us to meet the most challenging demands of construction projects, including design and installation.