Enter your numbers. See the real cost of grade failures, documentation rework, and paperwork hours — and what Sitemark saves you at $199/mo.
With Sitemark ($199/mo)
Re-excavation exposure assumes 5% of pipe runs require re-grade without real-time grade verification. Re-excavation cost $180–$240/LF reflects open-cut trench in urban environments. Failed as-built rework estimated at $4,500/occurrence (mobilization + survey time). Paperwork at $75/hr labor rate.
Underground utility contractors operate on some of the thinnest margins in construction — and re-excavation is the single biggest margin killer. In urban environments, re-excavating a failed pipe run costs $180–$240 per linear foot: traffic control, shoring, equipment, crew time, and the cost of redoing compaction and surface restoration. A 200-foot sewer run that fails grade verification costs $36,000–$48,000 to correct after backfill. Catching the same problem before backfill takes 10 seconds with Sitemark.
The minimum slope for gravity sewer — 0.08% — sounds like a small number. Over a 200-foot run, it means a rise of just 0.16 feet. That tolerance disappears fast when invert checks are done by memory or rough rod readings. Pipe grade verification requires consistent, documented checks at every manhole and at minimum every 25 feet between manholes. Paper logs create gaps; Sitemark enforces the schedule.
City inspectors increasingly require digital as-built documentation at closeout for utility work. Projects without verified invert elevation logs face delayed final acceptance, rejected as-builts, and in some cases retesting requirements that trigger new inspection fees. The cost of good documentation is a few seconds per check in the field. The cost of missing documentation is weeks of closeout delays and potential re-excavation liability.
Use the ROI calculator above to see your actual exposure. Most utility contractors are surprised by how quickly documentation-related costs add up when they account for re-excavation risk, delayed acceptance, and documentation labor.