Design calc worksheet

AI design calc worksheets for Canadian professional engineers

Run rational-method peak flow and Manning pipe hydraulics from structured project inputs, with every calculation step shown and a downloadable worksheet.

How it works

1. Step 1

   Enter design inputs

   Provide drainage area, runoff coefficient, rainfall intensity, pipe size and slope.

2. Step 2

   Calculations run

   Rational-method Q and Manning capacity are computed deterministically.

3. Step 3

   Download the worksheet

   Get the calculation steps, input summary, and worksheet for the project file.

What you get

• Calculation steps
• Input summary
• Worksheet download

Frequently asked questions

Are the formulas shown?

Yes. Every step — inputs, intermediate values, and the governing equations — appears in the worksheet so it can be checked by hand.

Is the output generated by an LLM?

No. The workpaper numbers are computed by deterministic spreadsheet logic — the same inputs always produce the same outputs. AI is only used to route your request and explain the results, so every figure is traceable to source rows.