Plumbing & Drainage
Reduce vertical and lateral displacement to a true offset, then solve travel and run for the fitting angle you enter.
Enter the dimensions and spacing rules you intend to lay out in the field.
Project result
Review the measured quantity, rounded purchase quantity and field-layout checks produced from the values you entered.
At a glance
Planning estimate only. Verify product coverage, package size, supplier specifications and project requirements before purchasing.
Rolling offset geometry
The plan separates the two perpendicular offset components before showing the solved true offset and travel.
Field plan updates with the calculator inputs.
Phone handoff
The QR is generated in this browser from the same bounded project-link URL. Nothing is sent to a QR service, and the base calculator URL remains canonical.
Generate a QR from the current calculator inputs.
Field check
Measured values are stored separately in this browser. They never overwrite calculator inputs or the original field plan.
| Check | Planned | Measured | Delta |
|---|
Enter measured values only where a comparison is useful.
A delta is descriptive only. Home Measure Lab does not apply a universal tolerance or automatic engineering/code acceptance decision.
Illustration and station tables are planning aids. Numeric calculator inputs/results remain authoritative; verify field dimensions, product instructions, project documents and applicable requirements before cutting, drilling, fastening or excavating.
Methodology
sqrt(rise² + roll²)
Combines the two perpendicular offsets.
true offset ÷ sin(angle)
Center-to-center diagonal travel.
true offset ÷ tan(angle)
Advance along the original line.
compare calculated quantity with measured scope and current product/stock values
Confirms the takeoff boundary before purchase or layout marks are transferred.
For Rolling Pipe Offset Calculator, measure both perpendicular offset components from the same datum and the selected fitting angle; confirm that horizontal and vertical offsets describe one rolling offset. Record field values before applying waste or purchase rounding, use one consistent datum and unit system, and rerun unlike conditions as separate scenarios so the result can be checked against the work area.
Use the result as a field-layout aid. Verify the governing detail, product instruction and jobsite reference before marking or cutting.
Reference
| Item | Solved here | Verify separately |
|---|---|---|
| Geometry / quantity | Arithmetic from entered measurements | Field dimensions and unlike conditions |
| Package / stock rounding | Whole-unit purchase count when applicable | Current product package, roll or stock size |
| Installation requirements | Not prescribed | Manufacturer instructions, project documents and local requirements |
| Project scope | One entered scenario at a time | Separate unlike zones, assemblies, product systems or field conditions before combining verified totals |
Questions
No. They are editable examples. Use the values from your measured project and the exact product or system you plan to install.
No. It is a planning and quantity tool. Installation sequence, suitability, fastening, structural requirements and code compliance must be verified separately.
Materials sold as whole rolls, bags, pieces or packages must be rounded to the next whole purchasable unit after allowances are applied.
Solve simple two-fitting pipe offset geometry from entered offset, angle and fitting take-out.
Open calculator → Plumbing & DrainageCalculate vertical drop from pipe run and an entered slope percentage, with grade ratio reference for layout checks.
Open calculator → Plumbing & DrainageConvert developed rigid-pipe run into whole stock sticks and joint count using a visible cut/fitting allowance and optional extra sticks.
Open calculator →