Gym floor planning, done properly
Draw your building's outline, press one button, and watch a full gym appear — real machines at real spacing, walkways people can actually use, and the exits worked out before the first treadmill is placed. Walk it in 3D, hand your contractor the floor plan, hand your dealer the priced equipment list. What used to take a week of squinting at graph paper takes an afternoon.
Runs in your browser — nothing to install. Invitation-only while we are in beta: sign in and ask from the app, or write to [email protected], and a real person answers.
3 ranked scenarios, 75 machines placed, zero error-severity clearance issues.
The whole floor is rasterised before anything is placed on it.
Not a check that runs afterwards. Those cells are removed from the grid first.
Re-solving does not quietly move a rack. Reproducible, every run.
01 The difference
There is no prompt, no diffusion, no hallucinated equipment, and nothing is “in the style of” anything. A treadmill has 2000 mm of clear floor behind it because a line in the rule pack says 2000 mm — and you can open that line, read the standard it cites, and change it.
The rules live in a JSON file, not buried in code. Each value carries the section it came from and a flag saying whether a human has checked it against the published document. When you swap a rule, every layout that depends on it changes for a reason you can point at.
The same is true of the picture. Every pixel in the 3D view and in the rendered walkthrough is the actual geometry at actual size — the same integers in millimetres that dimension the drawing. If a machine appears in a frame, it is on the equipment schedule.
02 Egress first
Occupant load, the number of required exits, exit widths, travel distance and a main circulation spine from the entry to the exits are all computed before any equipment exists. Those cells are then carved permanently out of the floor grid.
Cardio Selectorized Free weight Support Egress
Nothing is ever placed in them. Not by the solver, not by a repair pass, and not by you dragging a machine across the canvas — the space is simply gone from the set of places a machine can go.
Most layout tools do the opposite: land the equipment, then draw aisles through whatever gaps survive. That is why those plans come back from plan check with the circulation redlined, and why the fix is always to remove equipment the client had already been sold.
To be explicit: solving in this order does not make a drawing compliant, and we make no such claim. It means circulation is never the thing that gets sacrificed to fit one more machine. The fine print below says exactly where that line is.
03 How it solves
The solver runs in a Web Worker as pure functions — no DOM, no randomness that is not seeded, no clock. That is what makes a run reproducible rather than merely repeatable.
01
The floor plate is rasterised into 50 mm cells. Everything after this point is a question about cells, which is why “does it fit” has an exact answer instead of a tolerance.
02
Occupant load, required exit count, exit widths, travel and common-path distances, and a circulation spine from entry to exits. Those cells are removed from the grid permanently.
03
What remains is split into cardio, selectorized, free weight, functional and support by target share. Cardio prefers windows. Free weights want acoustic separation from reception and studios.
04
Equipment goes into banks tagged A, B, C at rule-pack spacing, so the plan reads the way a floor is actually walked. Cardio faces the view or the TV wall; racks face mirrors.
05
Every piece carries a safety envelope from its SKU record. Overlaps are illegal, so when something cannot fit you get a sentence in plain English saying what and why — never silently overlapping geometry.
06
Three scenarios come back ranked on adjacency, daylight and budget, from one seed. You compare them side by side instead of arguing about a single take-it-or-leave-it plan.
04 What you get out
Walls, equipment tagged with its row letter, key clearance dimensions, the egress paths, a title block and a code summary of the assumptions the layout was solved under. Metric or imperial, your choice per project.
Every sheet prints NOT FOR CONSTRUCTION — REQUIRES REVIEW AND SEAL BY A LICENSED ARCHITECT OR ENGINEER. That line is not removable.
CSV
Every line: quantity, manufacturer, model, plan tag, footprint, electrical requirement, unit price and extended price. Running total in the app against your budget as you work.
One function computes the schedule, the sheet's schedule block and the on-screen budget, so the three cannot drift apart by a cent.
MP4
A 15-second 2560 × 1440 clip, rendered offline frame by frame: 32 accumulated samples per frame, 8 camera sub-positions inside a 180° shutter for real motion blur, rendered at 1.5× and downsampled. Never a screen recording of a viewport.
Today the video renders on a local GPU worker, not in the browser. See the fine print.
DETERMINISM
Same project, same seed, identical plan — byte for byte, on every run. Change the seed and you get a genuinely different arrangement, not a jittered version of the same one. It means a layout you approved on Tuesday is still that layout on Friday, and that a bug can be reproduced from the project file alone.
05 The fine print
Your architect still signs the drawings.
What you get out is a serious design study — for scoping a space, pricing the equipment, and getting a landlord or lender to yes. It is not a permit set, and a licensed professional confirms egress and occupancy against your local code before anything is built. Every number the planner uses is a data file you can open, and each one is marked verified or not, right in the app.
It is invitation-only while we are in beta.
Creating an account is free; being let in is a personal decision by the people who run it. Ask from the sign-in screen or write to [email protected] — a real person reads it and answers, usually within a day or two. Once you are in, your projects follow your account onto whichever machine you open next.
Your work happens on your machine, and stays yours.
Drawing, solving, the 3D view and the PDF all run in your browser — nothing waits in a queue on someone else's server. Projects are saved to your account, and only your account can read them. The privacy notice is written from the code and says exactly what is stored where.
An 80 × 120 ft rectangle and one click gets you three ranked scenarios in a few seconds. Nothing to install, and once you are in, the work is waiting on whichever machine you open next.
app.pcfitness.app · invitation-only beta · not invited? write to [email protected]