Flush mounted boreholes or installations are finished so that the instrumentation is entirely below ground; nothing is left sticking above the ground. This kind of installation is typically done in urban areas, but may be used anywhere.
Step 1 - Plan the Installation
To ensure that you have enough space to work, an underground electrical utility enclosure such as a vault or manhole system should be acquired. You need to determine the minimum capped length for the ShapeArray and ensure there is enough space to do cable turns and provide strain relief. The dimensions of the enclosure must allow room for the Measurand installation hardware (compression clamp or 27 mm install kit). Conduit should be acquired to protect the communication cable running from the installation to the instrumentation cabinet.
Figure 1: Examples of underground utility enclosures
Step 2 - Prepare the Area for Installing the ShapeArray
Excavate, by hand, an area large enough to install the utility enclosure of choice. You need to ensure the excavation and utility enclosure installation is completed prior to installing the ShapeArray (SAA). Conduit for protecting the ShapeArray cabling should also be installed at this point.
Step 3 - Use Appropriate Installation Hardware to Finish the Installation
Please refer to the appropriate vertical installation instructions based on the your installation hardware of choice.