When the City installed the Legacy Oak Irrigation System years ago, they decided not to use their trenching machine under the Oaks, so as to prevent damage to the tree roots. Instead, they laid the PVC piping on top of the grass and installed rebar to hold the plastic piping in place. Two problems resulted from this '"solution." With time and exposure to the sun, the PVC pipe became brittle and cracked. The rebar posed a tripping hazard.
The UHCA Landscape Committee decided to fix these problems by burying the PVC pipe in a very shallow hand-dug trench, burying the above ground sprinkler heads, and removing the rebar tripping hazard. There was a further problem, in that the City had located the irrigation system water takeoff in the lowest area of the median. As a result, the irrigation system control box would flood in heavy rainstorms. To address this problem and prevent the system controllers from being damaged by rain water, a new elevated control box was installed.
Here are some in-progress photos. Thanks, Landscape Committee, for your good work!
The old system
The new system