Verify Doorway and Passage Clearances Against Mobility Standards — Free
Narrow doorways restrict wheelchair and mobility aid access. Compare measured clear opening widths against accessibility clearance standards.
The proof surface
Building plans mark door dimensions. This subtracts frame or handle obstructions from measured widths to highlight non-compliant doorways.
Why the flat version breaks
Measuring frame to frame
Door leaf thickness reduces clear opening width when open.
Ignoring threshold bumps
Raised thresholds create physical barriers even when width is adequate.
Overlooking handle projections
Protruding panic bars or handles reduce usable clearance width.
How to work the passage clearance strip
Measure clear opening width from door stop to door face at 90 degrees.
Measure handles, hinges, or door sweeps protruding into clear space.
Enter accessibility standard minimum width (e.g. 800 mm or 32 inches).
Review width margins and flag doorways needing offset hinges or door removal.
What the passage clearance strip replaces
| Question | Before | Visible working |
|---|---|---|
| Measuring frame to frame | Door leaf thickness reduces clear opening width when open. | Account for obstructions |
| Ignoring threshold bumps | Raised thresholds create physical barriers even when width is adequate. | Set required clearance standard |
| Overlooking handle projections | Protruding panic bars or handles reduce usable clearance width. | Identify clearance bottlenecks |
A local arithmetic aid replaces hand calculation, not expert review. No paid AI service is needed.
Run it on the samples, right here
FIRST-LOAD
Input is processed locally and a draft is saved automatically in this browser profile when storage is available. Reset to sample clears that draft; Pro history has its own clear button. A state link encodes your inputs in its URL: share only non-sensitive rows. Browser history, clipboard and anyone receiving the link may retain it. Optional AI use below leaves this device; it is not required.
Doorway clearance calculation using user measurements. Not building code or ADA compliance certification; verify with qualified inspectors.
Data note: Everything runs in this browser tab on the passage clearance strip: your building passage | measured clear width mm | frame obstruction mm stays on this device, nothing is uploaded, and the reading is rebuilt only when you press run.
Go deeper: the companion app files the same reading as a paper ticker strip
The article demo above runs without limits. The companion app keeps a local history, exports the rows as CSV, prints the passage clearance strip reading, and holds your drafts on this device — one free run, then $ 4 one-time for the layer that keeps filing.
The passage clearance strip reading is complete for free. The optional $4 layer adds print, row CSV and the last five local reading summaries; it does not add hidden answers. Checkout is not configured yet; the article demo remains unlimited.
Open the verify doorway and passage clearances against mobility standards companionBoundary
Doorway clearance calculation using user measurements. Not building code or ADA compliance certification; verify with qualified inspectors.
What this is built on
- Method: Enter accessibility standard minimum width (e.g. 800 mm or 32 inches).
- All sample records are invented examples. The app does not fetch measurements, policies, files or personal records.
- Google’s official pricing page, fetched 2026-09-28, lists free-tier access including AI Studio. Optional formatting only; limits and availability can change. Free-tier content may be used to improve products. Never paste private records there.
Before: Door leaf thickness reduces clear opening width when open. After: the passage clearance strip shows the working beside each named row so the reader can change the assumption and inspect the consequence.
Optional AI formatting, not calculation
For this passage clearance strip, use the free AI Studio interface only if available to you, with no paid API key. Manual entry completes the same workflow for free. Supply only fictional or non-sensitive notes. Review its output against the source; never paste unresolved questions into the numeric rows.
Format my non-sensitive notes for a passage clearance strip. Return plain rows only: building passage | measured clear width mm | frame obstruction mm. Preserve supplied quantities exactly. Do not guess missing values; list questions separately. Do not calculate or add advice. I will check every row before pasting into the local tool.
Accepted schema: building passage | measured clear width mm | frame obstruction mm. No AI response is executed as code.