NC erosion & sediment control
Reviewer-defensible NC erosion & sediment control calculations.
Skimmer basins, grass channels, riprap outlet protection, and silt fence — computed exactly the way the NC E&SC Manual says, with the governing equation and manual citation on every line. Built so the plan reviewer can check your math without calling you.
Every number answers to the manual
Erosion Suite isn't a spreadsheet with opinions. Each module implements the NC Erosion and Sediment Control Manual's published procedure and shows its work:
Inline equations
Every computed row on a calc sheet carries the formula it came from, with your values substituted — no black boxes between input and answer.
Manual citations
Practice numbers, appendix figures, page references — Practice 6.64, Appendix 8.05, Figure 8.06c — cited where each rule is applied.
Verification ledger
Each exported sheet tallies which constants are source-verified against the manual, so defensibility is visible, not implied.
Four modules, one workspace
Try any workbench in the browser without an account. Save projects, export calc-sheet PDFs, and assemble full calculations manuals on a paid plan.
Skimmer basin design
LiveSediment basin skimmer sizing and dewatering checks for NC erosion-control submittals.
Swale (grass-lined channel)
LiveV-shape and trapezoidal channel design per NC ECM Section 8.05 — capacity + stability checks with optional establishment-liner sizing.
Outlet protection / riprap aprons
LiveApron sizing for circular pipe outlets per NC ECM Practice 6.41 and Appendix 8.06.
Silt fence / outlet placement
LiveRun length limits, drainage-area checks, and outlet placement per NC ECM Practice 6.62 and Table 6.62a.
From first number to sealed manual
1 — Calculate
Work in the browser, anonymously if you like. Results update live with pass/fail checks against the manual's criteria.
2 — Save & export
Keep every calc under its project, then export standardized calc-sheet PDFs — project header, banded sections, an equation on every row.
3 — Assemble the manual
Combine narrative, calc sheets, your uploaded supporting documents, and a design-references appendix into one submittal-ready PDF.
Free to try. $39/mo when it earns its keep.
Every calc is free in the browser. Solo unlocks saved projects, PDF export, and the manual builder — with a 14-day trial, no card required.