Log invert elevations, verify pipe slope, and document MH-to-MH runs in the field. Generate city-ready as-built PDFs before you leave the site — and stop getting as-builts rejected.
Handwritten invert sheets are missing fields, illegible, or organized in formats the reviewing agency does not accept. Each rejection costs days of delay, sometimes requires a re-inspection fee, and damages the working relationship with the municipality on future work.
A grade stake placed wrong, a hub knocked by a machine, or a laser not re-leveled after a break — any of these puts pipe at the wrong elevation. Discovering the error after the trench is backfilled means a dig-and-relay at $150–$400 per linear foot.
Logging each run — inlet invert, outlet invert, pipe length, slope — by hand on paper means transcription errors and no automatic comparison to design inverts. Discrepancies between field records and the approved plan get discovered at the worst possible time: permit closeout.
Sitemark formats as-built records to match what reviewing agencies expect: run-by-run invert elevations, slope, pipe material, structure depths, and deviation from design. Hand the inspector a PDF at the end of the visit, not three weeks later.
Enter inlet and outlet inverts as you lay pipe. Sitemark calculates slope instantly and flags anything outside the design range. Catch slope errors while the trench is open, not after the machine has already moved on.
Each run is recorded against the design inverts from the approved plans. Deviations are calculated and flagged at the point of entry. The final as-built shows both design and field-measured inverts side-by-side — exactly what inspectors and reviewers need.
Record inlet and outlet invert elevations per run with automatic slope calculation.
Log structure type, rim elevation, pipe material, diameter, and length per run.
Auto-calculated slope with pass/fail against minimum and maximum design slope.
Formatted as-built document ready for city or county inspector submission.
Compare field-measured inverts to design inverts from approved plans — deviations flagged automatically.
Track gravity sewer, storm drain, and force main in separate logs within the same job.
City inspector rejected our paper as-builts twice on a 3-mile gravity sewer job. After the second rejection we switched to Sitemark. We logged every invert elevation, every pipe slope, every MH-to-MH run, and handed the inspector a PDF on the job site. First-pass acceptance. That was six months ago and we have not had a rejection since.
Carlos R.
Underground Utilities Contractor
Municipal utility work · Houston, TX
City inspectors typically require MH-to-MH run records showing inlet and outlet invert elevations, pipe slope as a percentage, pipe length, pipe material and diameter, structure type and depth, and deviation from design grade. The as-built must match approved plan inverts within the project tolerance — commonly ±0.02 ft. Sitemark generates a formatted PDF as-built from field-logged invert data.
Measure invert elevations at both ends of the run using a laser level or total station. Calculate slope as (upstream invert minus downstream invert) divided by pipe length, expressed as a percentage. Minimum slope for self-cleansing velocity in an 8-inch sewer is typically 0.4% per standard codes. Sitemark calculates slope automatically from your invert shots and flags runs outside the design range.
If pipe slope is too low, solids accumulate and the line needs frequent jetting or fails prematurely. If too steep, flow velocity erodes the pipe invert. Either case requires dig-and-relay at $150–$400 per linear foot depending on depth and conditions. Catching a slope error before backfill eliminates this entirely.
Yes. Sitemark organizes by system type within a job — gravity sewer, storm drain, and force main are each tracked separately with appropriate fields. The as-built report can be filtered to output by system type for the appropriate inspector or reviewing agency.
Sitemark gives sewer contractors the tools to verify pipe slope in the field and deliver city-ready as-built documentation without the paperwork cycle.