Settlement plate and inclinometer on wick drain site

Eustis Engineering has installed geotechnical instrumentation for decades. Our instrumentation has resulted in substantial cost savings to our clients by reducing preload durations, providing refinement of geotechnical design parameters through full scale testing, and verifying the performance of cutting edge designs. Our services go beyond the construction phase; long term monitoring programs enable owners maximum utilization of their facilities throughout their design life by verifying soil behavior is within acceptable limits.

Eustis Engineering provides the following instrumentation services:

• Install vibrating wire devices that include piezometers, extensometers, settlement gages, and strain gages
• Install data logger to enable periodic collection or remote web access for vibrating wire devices
• Install settlement plates
• Install conventional slope inclinometers or MEM sensor array inclinometers
• Provide monitoring services of all instrumentation devices with geotechnical interpretation

Data logging of piezometers and settlement gages

Instrumentation is a natural complement to our design services and enables us to provide continuing services from project inception to the end of a project’s design life. Examples of instrumentation include the monitoring of groundwater levels adjacent to pump stations, inclinometers to assess lateral movements near marine structures, and piezometers to determine states of consolidation under large diameter storage tanks.

Eustis Engineering recently installed a MEM sensor array inclinometer within the interstitial space of a 66-inch concrete pipe pile to monitor deflections during a lateral load. An imposed load exceeding 160 kips was applied and strain measurements were taken from gages installed within the pile wall. The lateral load test plan was developed and conducted by Eustis Engineering.

With this data, a sub-consultant was able to determine in-situ lateral stiffness characteristics (p-y) that enabled refined soil behavior to be used in the finite element model.

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  Real time monitoring of pile deformation during lateral load test

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