Usually when there are overhead wires they are in front of the house along the road. And for the most part people passing by rarely notice them.
This backyard project, however, had an atypical situation.
The utility poles and wires ran along the back property line. That means the “wire-runs” to feed the house hung right over the backyard — where the new raised terrace/patio was planned.
When the homeowner first moved in five years ago and we evaluated the landscape, it was clear we’d have to reroute the wires underground. It was therefore no surprise for the homeowner to see the cost in the budget.
As you would expect, putting the utilities underground was one of the first phases of this project.
The toughest codes and regulations applied to the power lines.
The licensed electrician on the job contacted the power company to begin the process. Paperwork was filled out and a representative from the power company visited the site to guide us on the details & requirements.
He marked the utility pole where he wanted our underground conduit to come up.
The trench was dug 3′ or greater in depth.
In the bottom we placed a layer of sand and then three PVC conduits. The largest diameter is for power, and the other two for phone and cable.
Whether you’re closing a trench that contains sprinkler pipe, water lines, gas lines or electric, take the time to be careful how you backfill.
In the case of these major utilities the conduits were resting on top of sand and then eventually covered with sand. This does 2 important things:
An additional requirement was to bury a special metallic tape just above the sand layer.
This tape would serve as a “visual marker” if someone were digging, but also, because it is metallic it can be traced electronically.
Like everything else in construction, be thorough and don’t cut corners. You don’t want any problems showing up in the future.
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Landscapes are complex, and shortcomings anywhere in the process can affect the project… and your peace of mind.
My approach is process-oriented. I break things down from planning to implementation — and make sure everyone is kept informed.
My goal is to alleviate concerns such as design decisions, costs, workmanship and material quality. I want folks to stress less and actually enjoy the process.
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