Three floors up, the framing crew was waiting on us, and the circuits still hadn’t been roughed in. But the real problem wasn’t on the third floor. It was outside, in the dirt, where the underground conduit run from the transformer pad hadn’t been finished. No service feed in, no rough-in upstairs. That’s how these jobs go when the underground piece gets treated like an afterthought.
The situation described in PCMag, “Cash In This Weekend With Over 100 Tech Deals From Apple, LG, Samsung, and More at Amazon’s Big Spring Sale” reflects a pattern we see often on commercial sites — everyone’s chasing the visible work while the buried infrastructure quietly falls behind schedule.
Trenching, conduit routing, directional boring under the parking area, getting the secondary run to the building pad — that work has to be sequenced right. If the GC pushes vertical framing before the underground is locked in, the electrical rough-in upstairs has nowhere to land. We’ve walked Bradenton and Sarasota sites where the slab got poured before the conduit was even staged. Then somebody is breaking concrete two weeks later.
Honestly, most of the delays I see on commercial jobs trace back to the underground utility installation being rushed or undersized. Wrong conduit size, missed sweeps, no spare pathways for future load. That stuff doesn’t show up on day one. It shows up when the building tries to come alive and the feed can’t carry what was promised.
Florida sites add their own pain. Sandy fill, water table sitting close to the surface, summer storms flooding open trenches. You can’t treat underground like a side task here. The conduit, the bedding, the depth, the warning tape, the pull boxes — all of it has to be planned before a single stud goes up. When it’s not, the whole job timeline starts dragging and the people three floors up are the ones blamed for it.
If you’re planning a new build, get the new construction electrical team and the underground crew on the same page early. And tie it back to your service entry plan before excavation starts, not after.
FAQs
How deep does commercial underground conduit need to be in Florida?
Depends on the conduit type and what’s running through it, but most secondary runs sit between 18 and 36 inches with proper bedding. Primary feeders go deeper. Local utility specs and the AHJ get the final say.
Can underground utility work be added after the slab is poured?
Yes, but it gets expensive. You’re cutting concrete, patching, working around finished structure. Cheaper to get it right before the pour.
Why does the underground portion delay the rest of the build?
Because nothing upstairs can be energized until the service feed is in. Rough-in can technically proceed, but inspections, temp power upgrades and equipment startups all wait on the underground being complete.
What causes underground conduit failures later on?
Usually undersized pipe, missed sweeps, poor bedding, or water intrusion at pull boxes. Sometimes it’s just damage from other trades digging without locating first.
Should spare conduits be included during the original trench?
Always. Pulling extra empty conduit during the initial dig costs almost nothing compared to trenching again two years later when the building adds load.
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