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Wide architectural opening creating a distinct threshold between connected living spaces.

04 · Path Planner

Where does the body actually walk?

Map routes, pinch points, social versus private flow. Movement is the first architecture.

Opening the bench

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Field guide · circulation

Read the occupied room, not the empty floor

A route is the space a body needs while doors, chairs, drawers and furniture are in the positions people actually use. A piece can fit geometrically and still fail the room once it is occupied.

Circulation measurement diagramA room plan showing a walking path and the narrowest occupied point that should be measured.measure the narrowest occupied pointstartdestination

Read it

  1. 01Mark the real origin and destination: door to seat, fridge to sink, bed to closet — not an imaginary diagonal through furniture.
  2. 02Measure the narrowest point with doors, chairs and drawers in their normal open or occupied position.
  3. 03Separate a one-off pinch from a route that is constrained for most of its length.

Test it

  1. 01Photograph or mark the current pinch point.
  2. 02Move one reversible obstruction only.
  3. 03Walk the route carrying what the room normally asks you to carry, then measure the same narrow point again.

What counts as proof

The proof is a wider measured route with the same room in use — not a floor plan that looks cleaner.

  • Room Lab clearance thresholds are planning heuristics, not a substitute for local accessibility, egress or life-safety requirements.

Where this comes from

links reviewed 2026-09-08

Demonstrations are optional learning aids and the standards are the floor under the method. Neither is evidence about your room: Room Lab does not treat a video as proof, and a link never replaces a measured test.

Watch

Planning Pathways & Areas for MovementDiscover Interior Design · Carol Gilman, NCIDQA professional walkthrough of planning the route first and fitting furniture around it, which is the order this guide asks for.
4 Furniture Ideas to Maximize Your Living Room LayoutJulie Khuu · verified interior-design channelA high-engagement space-planning walkthrough focused on how furniture placement changes usable circulation and function.

Read the source

Chapter 4: Accessible RoutesU.S. Access BoardThe accessibility floor where it applies. Room Lab's clearance figures are planning heuristics and this is not one of them.

Decision matrix · signal → test → proof

Decide whether the route needs a move, a smaller piece, or no change

Do not jump from diagnosis to purchase. Read the signal, run the lightest reversible test, and commit only when the result survives real use. The stop column is part of the decision, not fine print.

Room Lab decision flowA four-stage flow from an observed signal, through one reversible test and proof under real use, to either commitment or stopping the proposed change.signalobservetestone variableproofreal usecommit / stoprecord whyno evidence → no permanent move
Decision matrix for Decide whether the route needs a move, a smaller piece, or no change: signal, reversible test, evidence for commitment, and stop condition.
SignalWhat you actually see TestLightest honest experiment CommitEvidence that earns permanence StopWhat invalidates the move
01A route pinches only when a chair, drawer, or door is in normal use.Mark the pinch, move the reversible obstruction, and walk the same route carrying what normally travels through it.Keep the move only when the narrowest occupied point is measurably wider and the moved object still works where it landed.Stop if the fix blocks another opening, damages another job, or depends on ignoring an egress or accessibility requirement.
02The whole route is constrained, not just one local pinch point.Mock a narrower furniture footprint with tape or borrowed pieces before replacing anything.Commit to a smaller footprint only when the full route improves without removing the room's required function.Stop if the apparent gain exists only on an empty plan and disappears once seats, doors, or drawers are occupied.
03The room measures adequately but people still detour around furniture.Observe the natural walking line, then rotate or relocate one movable piece so the path follows that line instead of fighting it.Keep the arrangement when the detour disappears in real use and the destination remains usable.Stop if the route improves only by making seating, storage, or another declared job materially worse.

Evidence map · branch by branch

Why these tests and stop conditions are here

Each matrix branch is tied to a primary standard, public guidance, technical reference, or vetted expert teaching source. The applicability note explains the connection; the source limits prevent a general reference from being mistaken for a room-specific fact.

reviewed 2026-09-08

Decision 01

Occupied pinch points must be judged against real movement; accessibility and egress requirements remain a separate minimum floor where applicable.

Decision 02

Testing a smaller or reconfigured furniture footprint is preferable to assuming that a purchase will solve a route-level constraint.

Decision 03

Observed travel behavior is useful evidence when the geometry appears adequate but people consistently create the same detour.

Worked room · method example

illustration, not a recommendation for your room

Living room with a coffee table pinching the route from the entry to the sofa

01Signal
The route clears on paper but narrows every time someone is seated and the table is centered.
02Reversible test
Shift the table off the walking line for three evenings and remeasure the same occupied pinch point.
03Observed result
The route widens, people stop cutting behind the sofa, and the table remains reachable from the seats.
04Decision
Keep the new position. A new table is not justified because the reversible move solved the measured problem.