Superseded drawings: from the wall
A superseded drawing has been replaced by a later revision — but the print taped to the wall is still there. One code per flat, plant room or package opens the current revision instead. Whoever needs it scans it with their phone camera, with no app. A new revision? You replace the file; the label stays.
What a superseded drawing is
What superseded means
Every change to a drawing gives it a new revision — A, B, C — shown in its title block. When revision C is issued, revision B is superseded: not wrong, simply no longer the one to build from.
Superseded, obsolete, void
Superseded: replaced by a later revision of the same drawing. Void or cancelled: withdrawn from the set, with nothing to replace it. Obsolete covers both. On site the rule is the same — do not build from it.
Who supersedes a drawing
Whoever produced it — architect, engineer or a package contractor, as the contract says — issues the new revision. The office logs it in the drawing register and sends it out. What it rarely reaches is the print on the wall.
The current revision exists. It is just not at the door.
On a live site, drawings are revised every week and the people working from them change every day. The print on the wall stays exactly as it was the day it was printed.
The print on the wall is two revisions behind
The set pinned up in the site office or taped to the partition dates from the last issue. Since then the engineer has issued revision C — and the wall is going up to revision A.
Whoever is at the door chases the drawing
They ring the site manager, who searches their inbox and forwards a PDF too heavy to get through. Meanwhile the team waits at the door.
Nobody knows who has which revision
USB stick, WhatsApp group, Monday’s printout: every subcontractor has its own set, and none is sure it is the latest. You find out when the work has to be redone.
Keeping superseded drawings off the wall,
The usual fix is discipline: someone takes the old prints down every time a revision is issued. This one takes the print away instead.
Step 1
One code per door
A documents code for each flat, plant room or package. Behind it, what concerns that room: drawings, data sheets, operating instructions.
Step 2
A label, stuck once
On the door or the frame. Whoever needs it scans it with their phone camera: the list of files opens, with no app.
Step 3
New revision, new file
You upload revision C and remove revision B from your dashboard. The next scan opens revision C. The label does not move.
One code per door,
A single code at the site entrance is the site office folder on a phone: three hundred files, in which the person at the door still has to find theirs. A code per door serves only the few files for that room — which is what makes it usable standing up, with gloves on.
On the door of every flat
The flat’s drawings package by package (partitions, electrics, plumbing), the tiling layout, the options the buyer chose. What changes from one flat to the next, where it is needed.
On plant room and riser doors
Plant room, riser, switch room, lift motor room: schematics, operating instructions and the layout on the door — for the installer today, and for whoever runs the building tomorrow.
At each stair core or each floor
The common-area drawings, the coordinated services for that landing, the documents that concern a whole floor — kept apart from the flats’ own.
For one piece of equipment in particular — a boiler, a heat pump, an air handling unit — the equipment maintenance log goes further: manual, warranty, service contact and service history, on the machine itself.
The right drawing for every package,
The same code serves whoever publishes the drawings and everyone working from them. Each finds the drawings for their package, for that room.
Site manager
The revision agreed at the progress meeting is live before the meeting ends: you upload the PDF from your phone to the doors it concerns. No more reprinting a set of drawings for every stair core.
Site supervisor, foreman
You send the team to a door, not to a folder: “flat 204, scan the label”. The drawing for that room, the openings, the finishes schedule — without walking back to the site office.
Frame, concrete and brickwork
The structural drawing for the floor — openings, slab penetrations, formwork — on the stair core door: the team checks the latest revision before the pour, not after.
Drylining
The flat’s partition and drylining layout, the heights, the door linings: the right revision in front of you before the first board goes up — not the one taped to the wall three weeks ago.
Electrician
The flat’s electrical layout — sockets, lighting points, consumer unit — opens at a scan on the flat door. The main distribution board schematic stays on the switch room door.
Plumbing and heating
The plumbing layout and first-fix positions for the bathroom, the data sheet for the cylinder or heat pump, the commissioning instructions: what differs from one flat type to the next.
Joinery
The internal joinery drawing for the flat — doors, wardrobes, door swings, openings — and the data sheet for the model fitted: the right reference for the right room.
Tiling, decorating, finishes
Tiling layouts, tile references, paint colours: when buyers choose their options, every flat has its own. The options for this flat, not for the show home.
Architect, engineer, design team
You approve, the site manager publishes: the drawing issued for construction is the one the site opens at the next scan. On a site visit you see what the operatives see, with no account to create.
Handover and aftercare
At handover the label can stay: the construction drawings make way for the equipment manuals and the flat’s contacts. The buyer or the managing agent scans, without an account.
Printed once,
The code does not contain the drawings: it opens them. That is what lets you change revision without touching the label.
You replace the file, not the label
The printed pattern never changes: it points at the set of files you keep up to date. You upload the new revision and remove the old one; the next scan opens the new one — from your phone on site or from the office. Nothing to reprint, nothing to stick back up, and that is true on the free plan.
The revision is in the file name
The scan page shows each file’s name, type and size — it adds neither a date nor a revision. So name your files the way the title block does: “Flat-204_Partitions_Rev-C.pdf”. Whoever scans reads the revision before even opening the drawing.
Superseded revisions kept apart, from the Pro plan up
Version history, an option on each code.
With history on, a file you remove is archived instead of erased: it can be restored at any time and, if you choose, opened from the scan page under a “Previous versions” button, below the current documents — kept for the record, never mistaken for the current revision. On the Free and Starter plans, removing a file deletes it: keep your superseded revisions on your side.
What the person scanning sees
On their phone, in the browser.
- ✓ The list of files: name, type, size
- ✓ Open or Download, and a preview of each drawing
- ✓ Previous versions, if you show them (Pro)
- ✓ No app to install, no account to create
- ✓ If you require it: their position checked first
- ✓ Nothing but what you uploaded
Statistics count scans; they do not identify the person who scanned.
The door sign, free and without an account
Our scan me sign generator lays out the code for one door with a title (“Flat 204”) and a line (“Current drawings and instructions”), one, two, four or eight to an A4 sheet. Drop in your code, or paste its address, and it goes straight into the PDF. Laminate it and stick it on the door or the frame: the label will not move again — what is behind it is what changes.
Print a door signWhat this code is not
Not a document control system. No approval workflow, no drawing register, no transmittals, no notification to subcontractors: the code does not know a revision has been issued. You replace the file. What it guarantees is that everyone opens what you uploaded — without a USB stick or an attachment.
Not a DWG or BIM viewer. PDFs and images, which every phone opens without installing anything. Export your drawings to PDF before uploading them.
Not a code engraved for life. It is a dynamic QR code: it opens files hosted by us and lives with your account. Deactivated or deleted, it opens nothing — the price of changing revision without reprinting.
Superseded drawings — frequently asked questions
What is a superseded drawing?
Superseded, obsolete, void, cancelled: what is the difference?
How do you stop superseded drawings being used on site?
Where does the person scanning see the revision?
How many documents behind one code, and in what formats?
Can we keep the superseded revisions?
Does the person scanning need an app or an account?
How many codes for a block of flats, and what does the free plan include?
Can the drawings be restricted to people on site?
What happens to the code after handover?
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Concrete calculator
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Superseded drawings
One code per door, always opening the current revision — nothing left to take down from the wall.
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Method statements and permits reachable where the work actually happens.
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