Description of Services
The project at the St. Athanasius Center involved a substantial expansion of the church structure, necessitating a permanent shoring system to ensure stability both during construction and in the long term. To achieve this, we designed a durable secant pile wall, reinforced with permanent tieback anchors to resist lateral earth pressures and preserve the foundation integrity of the church under dynamic loading conditions.
In addition, sacrificial steel was incorporated into the design of both the king piles and tieback anchors to address long-term corrosion risks. This approach allowed for sufficient steel thickness to remain structurally effective over the extended service life, even with anticipated corrosion loss, ensuring sustained performance.
Additionally, underpinning was designed to support portions of the existing church’s foundation. The underpinning design utilized concrete block underpinning. This configuration allowed for effective load transfer between the new and existing foundations, minimizing differential settlement risks and accommodating both axial and lateral forces.
To confirm compliance with stringent design requirements, we conducted an extensive field inspection and monitoring program. This included regular inspections and testing of the tieback anchors to verify grout-to-ground adhesion in bond zones and confirm tensile capacity. Movement monitoring was also implemented, enabling precise displacement tracking to ensure adherence to the design tolerances specified in working drawings.
