Inverts · Underground Utilities
Sewer As-Built
Documentation
Document invert elevations, pipe grades, and depth of cover for every sewer run. Manhole-to-manhole as-built reports formatted for city acceptance — shareable the same day work is complete.
What it does
Manhole-to-manhole invert logging
- Design vs as-built invert elevation per manhole
- Inlet and outlet pipe size, material, and direction
- Calculated pipe grade from invert elevations and spacing
- Flag runs outside design tolerance
Depth of cover documentation
- Depth of cover shots at manholes and critical points
- Compare against minimum depth-of-cover spec
- GPS coordinates and surface elevation per shot
- Combined with invert data in the as-built report
City acceptance format
- Run-by-run table: MH ID, inversions, grade, material, size
- GPS coordinate grid for as-built location verification
- Pass/fail summary vs design spec
- PDF formatted for public works submittal
Share with city inspector
- Share as-built link — inspector opens in any browser
- They review, download PDF, approve or reject digitally
- Approval timestamped in your Gradelog job
- No city inspector account required
How it works
01
Set up the sewer job
Create a job in Gradelog, enter the design invert elevations from the plan set, and configure pipe material, size, and minimum slope requirements.
02
Log invert elevations and depth of cover
After each manhole is installed, shoot and enter the as-built invert elevation. Log depth of cover at manholes and critical pipe locations.
03
Review the calculated grades
Gradelog calculates actual pipe slope from your invert data and distances. Any run outside the minimum slope or design tolerance is flagged before you call for acceptance.
04
Submit the sewer as-built
Generate the Sewer As-Built report and share the link with the city inspector. They review and approve — you have a timestamped digital record for the project file.
Common questions
What does a sewer as-built report include?
A sewer as-built report for city acceptance typically includes: manhole ID, upstream and downstream invert elevations, pipe run length, pipe slope (percent grade), pipe material and size, depth of cover at critical points, and GPS coordinates. It should also include a project header, date, and contractor information. Gradelog's Sewer As-Built report template includes all required fields for public works submittal.
How do I document invert elevations in Gradelog?
In Gradelog, you log each manhole with its design and as-built invert elevations, inlet and outlet pipe information, and depth of cover shots. The app calculates the pipe grade between manholes from the invert elevations and distances you enter. If elevations are outside the design tolerance, the run is flagged for review.
Can I import sewer as-built data from a pipe laser or GPS rover?
Yes. Gradelog imports CSV files from Topcon, Trimble, Leica, and Spectra data collectors. If your crew uses an RTK rover to shoot invert elevations or depth of cover, you can import those elevation points directly. Pipe laser grade data can be entered manually or imported from a CSV export if your instrument supports it.
Who receives the sewer as-built report?
Sewer as-built reports are typically submitted to the city or county public works department for acceptance before the system is placed in service. In some jurisdictions, the engineer of record also reviews and stamps the as-built. Gradelog's shareable link lets you send the report to the city inspector or engineer directly — they review and approve digitally without a Gradelog account.