CASE STUDYNAPLES BAY PIN PILE INSTALLATION

Naples Bay, its tributaries and the Gordan River flow into beautiful waters of the Gulf of Mexico. There are several filter marshes that serve as habitat for sportfish, wading birds, otters and manatees.

The Gordan River has been going through a neighborhood renovation with older houses being demolished and new modern residences being built, especially on the river and adjoining canals.

ANALYSIS

Coastal Foundation Solutions was called in to stabilize a historic boat house on the Gordan River. The existing building was partially situated over the river, and had settled up to 2 inches in several locations. Distress to the existing structures was the direct result of long-term localized erosion of fill soils from under the building, possibly aggravated by high tidal flows and boat wakes. The settlement resulted in settlement of the concrete block walls and slabs within the building.

In addition, the subsurface lime rock was located eight (8) foot beneath the existing grade. These site condition required a specific piling to sustain the boat house structure.

SOLUTION

For the stabilization project, Coastal Foundation Solutions excavated to the bottom of the foundation and prepared the footings for foundation brackets. We elected to use vertical support pin piling to support the building. We hydraulically drove four (4) inch galvanized schedule 80 pipe to approximately 10 feet into substrate. For additional lateral support, we filled the pipe with grout to provide stability to the structure.

At completion, the boat house was stabilized, alleviating any concerns over further sinking or deterioration.
Coastal Foundation Solutions has experience in many piling designs and installations. Our Coastal Construction experience over the last 32 years allows us to remedy any foundation issues.

RESULT

Over the course of two days, Coastal Foundation Solutions successfully stabilized the foundation of this historic Naples boat house with the use of pin piles. Using our specialized equipment, we were able to strategically install these pin piles 5 feet apart, along with fifteen (15) anchor piles that were attached to the structure for lateral support and stability.