Knowledge base for roofers and sheet-metal workerswhen someone on the roof asks which metal is up there.

The handover — not the invoice date and not the day the crew left. For work on a building, under the Austrian Civil Code (ABGB) it is three years from handover, unless the contract says otherwise. You ask by address; if the handover record is in the knowledge base, the answer gives its date with the source, alongside the final invoice and the correspondence from that time. Whether storm damage is a warranty case at all or an event that nobody is liable for is not decided by the system — that assessment is yours. If it finds no record for the property, it says so.

You ask for the passage, not the document: minimum pitch for this tile, seam width for this membrane, fixing requirements in the edge zone. The answer gives the paragraph with the page number, for looking it up. Whether the right passage comes up with your guidelines, you check in the demo with questions whose answer you know. The system doesn’t fetch a new version from the web on its own — whether it may access the internet at all is your setting: not at all, only after asking in the chat, or freely. When the manufacturer issues a new guideline, you add it; the old one stays in the knowledge base, because the roofs of that time were built to it and that is exactly what you have to show if there is a complaint.

That depends on whether the documents are in the knowledge base. Under the Austrian Construction Work Coordination Act (BauKG), a file for later work must be prepared for buildings; it explicitly covers features such as access routes and anchor points, and the building owner must keep it for as long as the building exists. Whether they can still find it is another question — your own copy you can query if it is filed, even as a PDF attached to an old manufacturer email, provided the mailbox is included. Asked about the property, the answer gives the location and type of the points and the date of the last inspection record, as far as documented; if the system finds nothing, it says so. Under the Austrian PPE Regulation (PSA-V), personal protective equipment against falls from height must be inspected by a competent person at least once a year; the interval for the permanently installed device on the roof is set by its manufacturer. Nothing is calculated here — what is shown is what is documented.

Photos can go into the knowledge base and be queried by property and period. The picture of the seam, of the junction with the chimney or of the rating plate of a smoke vent is often the only evidence that exists for a piece of work at all — especially for everything that later disappears under metal. The system suggests property and date; with phone pictures, the date taken is in the file anyway. How well photos can be found by what they show is a point to check in the demo with your own pictures. You confirm once what kind of picture it is: a damage photo a customer sends you and your own installation photo shouldn’t be open to the same people.