PNI Sensor
DOC# : PlacePod Installation Guide R01_draft7
Page 7 of 14
5 IN-GROUND INSTALLATION PROCEDURE
This section outlines the steps required to physically install an in-ground PlacePod.
5.1
PREPARING THE PARKING SPACE
See Section 2.2.
5.2
DRILL THE CORE
Have a professional drilling and coring company drill the holes for each sensor. Give them
these instructions for drilling:
1. Drill a 4.5-inch diameter hole. Do not use a drill larger than 4.5 inches in diameter.
2. Drill to a minimum depth of 1.5 inches. Drilling completely through to the bedding layer
and back-filling with sand to the 1.5 inch depth is preferred. Note: If you do not drill
through to the bedding layer, you will need an extra step to remove the core. This
usually involves an impact device such as a jack-hammer or air-chisel.
3. Optional: Flush the drilling surface with water to lubricate the drill and dampen dust.
Figure 6: Drill the hole for the PlacePod
5.3
REMOVE THE CORE
Remove the core after drilling is done.
1. If drilling down to the bedding layer, the core may remain in the drill bit when it is
withdrawn from the hole. Remove the core from the drill bit by tapping the side of the drill
bit with a non-marring material.
2. If drilling partially into the pavement without penetrating the bedding layer, the core will
have to be broken out using an impact device such as a jack-hammer or air-chisel.
Figure 7: Remove the core from the hole
